FPUS55 KPSR 182301 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 400 PM MST Mon May 18 2026 This is an automatically generated product that provides average values for large geographical areas and may not be representative of the exact location that you are interested in. For a more site specific forecast, please visit weather.gov/phoenix and either (1) Select a location from the dropdown menu above the map or (2) Click a location on the map. You can refine your selection by clicking on the map displayed on the resulting page. AZZ537-540-542>544-546-548-550-551-191100- Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix- North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Sun Lakes, and Queen Creek 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 57 to 67. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .TUESDAY...Mostly sunny. Highs 87 to 92. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 59 to 69. West wind 5 to 10 mph. .WEDNESDAY...Partly sunny in the morning then becoming mostly sunny. Highs 90 to 95. Southwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 59 to 69. West wind 5 to 10 mph in the evening becoming northwest around 5 mph after midnight. .THURSDAY...Sunny. Highs 91 to 97. .THURSDAY NIGHT...Clear. Lows 61 to 69. .FRIDAY...Sunny. Highs 92 to 98. .FRIDAY NIGHT...Clear. Lows 63 to 70. .SATURDAY...Sunny. Highs 93 to 99. .SATURDAY NIGHT...Clear. Lows 65 to 72. .SUNDAY...Sunny. Highs 96 to 101. .SUNDAY NIGHT...Clear. Lows 66 to 72. .MEMORIAL DAY...Mostly sunny. Highs 96 to 101. $$ AZZ541-549-555-191100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 53 to 63. West wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .TUESDAY...Mostly sunny. Highs 87 to 92. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 56 to 66. Northwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .WEDNESDAY...Partly sunny in the morning then becoming mostly sunny. Highs 89 to 94. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .WEDNESDAY NIGHT...Clear. Lows 55 to 65. West wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .THURSDAY...Sunny. Highs in the lower to mid 90s. .THURSDAY NIGHT...Clear. Lows 60 to 66. .FRIDAY...Sunny. Highs in the lower to mid 90s. .FRIDAY NIGHT...Clear. Lows 62 to 68. .SATURDAY...Sunny. Highs in the 90s. .SATURDAY NIGHT...Clear. Lows 64 to 70. .SUNDAY...Sunny. Highs in the mid to upper 90s. .SUNDAY NIGHT...Clear. Lows 65 to 71. .MEMORIAL DAY...Mostly sunny. Highs in the mid to upper 90s. $$ AZZ553-554-191100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 53 to 63. West wind 5 to 10 mph in the evening becoming south after midnight. .TUESDAY...Mostly sunny. Highs 87 to 92. South wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 56 to 66. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .WEDNESDAY...Partly sunny. Highs 90 to 95. Southwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Lows 55 to 65. West wind 5 to 10 mph in the evening becoming south after midnight. .THURSDAY...Sunny. Highs 91 to 97. .THURSDAY NIGHT...Clear. Lows 59 to 66. .FRIDAY...Sunny. Highs 92 to 98. .FRIDAY NIGHT...Clear. Lows 60 to 68. .SATURDAY...Sunny. Highs 92 to 98. .SATURDAY NIGHT...Clear. Lows 62 to 70. .SUNDAY...Sunny. Highs 94 to 100. .SUNDAY NIGHT...Clear. Lows 64 to 71. .MEMORIAL DAY...Mostly sunny. Highs 95 to 101. $$ AZZ532-191100- Yuma- Including the cities of Yuma and Fortuna Foothills 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 57 to 60. North wind 5 to 10 mph. .TUESDAY...Sunny in the morning then becoming partly sunny. Highs near 92. North wind 5 to 10 mph. .TUESDAY NIGHT...Considerable cloudiness in the evening then becoming partly cloudy. Lows 59 to 62. West wind around 5 mph in the evening becoming southeast after midnight. .WEDNESDAY...Mostly sunny. Highs near 95. Southwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 60 to 64. South wind 5 to 10 mph. .THURSDAY...Sunny. Highs in the mid to upper 90s. .THURSDAY NIGHT...Clear. Lows 61 to 66. .FRIDAY...Sunny. Highs in the 90s. .FRIDAY NIGHT...Clear. Lows in the lower to mid 60s. .SATURDAY...Sunny. Highs in the mid 90s. .SATURDAY NIGHT...Clear. Lows 62 to 67. .SUNDAY...Sunny. Highs in the upper 90s. .SUNDAY NIGHT...Clear. Lows in the mid to upper 60s. .MEMORIAL DAY...Mostly sunny. Highs 98 to 100. $$ AZZ562-191100- Globe/Miami- Including the cities of Globe and Miami 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 46 to 56. West wind 10 to 15 mph in the evening becoming south around 5 mph after midnight. .TUESDAY...Mostly sunny and warmer. Highs 77 to 87. Southeast wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 50 to 60. West wind 10 to 15 mph in the evening becoming light after midnight. .WEDNESDAY...Partly sunny. Highs 78 to 88. Southeast wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 48 to 58. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .THURSDAY...Sunny. Highs 84 to 90. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. .FRIDAY...Sunny. Highs 85 to 91. .FRIDAY NIGHT...Clear. Lows near 60. .SATURDAY...Sunny. Highs 86 to 92. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. .SUNDAY...Sunny. Highs 88 to 94. .SUNDAY NIGHT...Mostly clear. Lows in the lower to mid 60s. .MEMORIAL DAY...Mostly sunny. Highs 88 to 94. $$ AZZ545-547-552-556>558-561-191100- New River Mesa-Rio Verde/Salt River-Superior-Tonto Basin- Mazatzal Mountains-Pinal/Superstition Mountains-Dripping Springs- Including the cities of Tortilla Flat, Superior, Punkin Center, Sunflower, Hayden, and Winkelman 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 51 to 61. West wind 10 to 20 mph in the evening becoming southeast around 5 mph after midnight. .TUESDAY...Mostly sunny and warmer. Highs 86 to 91. South wind 10 to 15 mph in the morning becoming southwest 5 to 15 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 54 to 64. West wind 10 to 15 mph in the evening becoming east around 5 mph after midnight. .WEDNESDAY...Partly sunny. Highs 87 to 92. South wind 10 to 15 mph in the morning becoming southwest 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 54 to 64. West wind 5 to 10 mph in the evening becoming east after midnight. .THURSDAY...Sunny. Highs 78 to 94. .THURSDAY NIGHT...Clear. Lows 52 to 65. .FRIDAY...Sunny. Highs 79 to 95. .FRIDAY NIGHT...Clear. Lows 54 to 65. .SATURDAY...Sunny. Highs 80 to 96. .SATURDAY NIGHT...Mostly clear. Lows 57 to 68. .SUNDAY...Sunny. Highs 83 to 99. .SUNDAY NIGHT...Clear. Lows 58 to 69. .MEMORIAL DAY...Mostly sunny. Highs 82 to 98. $$ AZZ560-563-191100- San Carlos-Southeast Gila County- Including the cities of San Carlos and Peridot 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 49 to 59. West wind 10 to 15 mph in the evening becoming east around 5 mph after midnight. .TUESDAY...Mostly sunny and warmer. Highs 77 to 87. South wind 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 53 to 63. West wind 10 to 15 mph in the evening becoming light after midnight. .WEDNESDAY...Partly sunny. Highs 78 to 88. South wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy in the evening then becoming clear. Lows 51 to 61. West wind 10 to 15 mph in the evening becoming northeast around 5 mph after midnight. .THURSDAY...Sunny. Highs 74 to 90. .THURSDAY NIGHT...Clear. Lows 38 to 61. .FRIDAY...Sunny. Highs 77 to 91. .FRIDAY NIGHT...Clear. Lows 41 to 62. .SATURDAY...Sunny. Highs 78 to 92. .SATURDAY NIGHT...Mostly clear. Lows 43 to 65. .SUNDAY...Sunny. Highs 80 to 94. .SUNDAY NIGHT...Mostly clear. Lows 45 to 66. .MEMORIAL DAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 80 to 94. $$ AZZ539-559-191100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 53 to 63. West wind 5 to 10 mph in the evening becoming south after midnight. .TUESDAY...Mostly sunny. Highs 88 to 93. Southwest wind 5 to 10 mph. .TUESDAY NIGHT...Considerable cloudiness. Lows 57 to 67. Southwest wind 5 to 10 mph. .WEDNESDAY...Partly sunny in the morning then becoming mostly sunny. Highs 90 to 95. Southwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 56 to 66. South wind 5 to 10 mph. .THURSDAY...Sunny. Highs 90 to 97. .THURSDAY NIGHT...Mostly clear. Lows 62 to 69. .FRIDAY...Sunny. Highs 91 to 98. .FRIDAY NIGHT...Clear. Lows 63 to 69. .SATURDAY...Sunny. Highs 92 to 98. .SATURDAY NIGHT...Clear. Lows 64 to 71. .SUNDAY...Sunny. Highs 95 to 101. .SUNDAY NIGHT...Clear. Lows 65 to 72. .MEMORIAL DAY...Sunny. Highs 95 to 101. $$ AZZ534-538-191100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 52 to 62. Northwest wind 5 to 10 mph. .TUESDAY...Mostly sunny. Highs 86 to 91. Northeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 56 to 66. Northwest wind 5 to 10 mph. .WEDNESDAY...Mostly sunny. Highs 89 to 94. South wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 55 to 65. Southwest wind 5 to 10 mph. .THURSDAY...Sunny. Highs 89 to 97. .THURSDAY NIGHT...Clear. Lows 56 to 67. .FRIDAY...Sunny. Highs 89 to 97. .FRIDAY NIGHT...Clear. Lows 58 to 68. .SATURDAY...Sunny. Highs 91 to 97. .SATURDAY NIGHT...Clear. Lows 61 to 71. .SUNDAY...Sunny. Highs 93 to 99. .SUNDAY NIGHT...Clear. Lows 62 to 72. .MEMORIAL DAY...Mostly sunny. Highs 92 to 100. $$ AZZ531-533-191100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 52 to 62. Northwest wind 5 to 15 mph. .TUESDAY...Mostly sunny and warmer. Highs 86 to 91. Northwest wind 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 55 to 65. North wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 90 to 95. Northwest wind 5 to 10 mph in the morning becoming west in the afternoon. .WEDNESDAY NIGHT...Clear. Lows 56 to 66. Southwest wind 5 to 10 mph in the evening becoming southeast after midnight. .THURSDAY...Sunny. Highs 89 to 97. .THURSDAY NIGHT...Clear. Lows 57 to 68. .FRIDAY...Sunny. Highs 89 to 97. .FRIDAY NIGHT...Clear. Lows 58 to 68. .SATURDAY...Sunny. Highs 89 to 97. .SATURDAY NIGHT...Clear. Lows 60 to 70. .SUNDAY...Sunny. Highs 92 to 100. .SUNDAY NIGHT...Clear. Lows 62 to 72. .MEMORIAL DAY...Mostly sunny. Highs 92 to 100. $$ AZZ535-536-191100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 400 PM MST Mon May 18 2026 .TONIGHT...Clear. Lows 52 to 62. Northwest wind 5 to 10 mph. .TUESDAY...Mostly sunny. Highs 88 to 93. Northwest wind around 5 mph. .TUESDAY NIGHT...Considerable cloudiness in the evening then becoming partly cloudy. Lows 55 to 65. Southwest wind 5 to 10 mph. .WEDNESDAY...Mostly sunny. Highs 91 to 96. Southwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 54 to 64. South wind 5 to 10 mph. .THURSDAY...Sunny. Highs 92 to 98. .THURSDAY NIGHT...Clear. Lows 58 to 66. .FRIDAY...Sunny. Highs 91 to 97. .FRIDAY NIGHT...Clear. Lows 58 to 66. .SATURDAY...Sunny. Highs 92 to 98. .SATURDAY NIGHT...Clear. Lows 60 to 68. .SUNDAY...Sunny. Highs 94 to 100. .SUNDAY NIGHT...Clear. Lows 61 to 69. .MEMORIAL DAY...Mostly sunny. Highs 95 to 101. $$ AZZ530-CAZ569-191100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 400 PM MST Mon May 18 2026 /400 PM PDT Mon May 18 2026/ .TONIGHT...Clear and cooler. Lows 51 to 61. North wind 10 to 15 mph. .TUESDAY...Mostly sunny and warmer. Highs 89 to 94. North wind 10 to 20 mph. .TUESDAY NIGHT...Partly cloudy. Lows 53 to 63. North wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 93 to 98. North wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 54 to 64. South wind 5 to 10 mph. .THURSDAY...Sunny. Highs 94 to 100. .THURSDAY NIGHT...Clear. Lows 58 to 66. .FRIDAY...Sunny. Highs 94 to 100. .FRIDAY NIGHT...Clear. Lows 59 to 67. .SATURDAY...Sunny. Highs 94 to 100. .SATURDAY NIGHT...Clear. Lows 60 to 68. .SUNDAY...Sunny. Highs 96 to 102. .SUNDAY NIGHT...Clear. Lows 61 to 69. .MEMORIAL DAY...Sunny. Highs 98 to 102. $$ CAZ564-565-568-570-191100- Chuckwalla Mountains-Imperial County Southeast-Chiriaco Summit- Chuckwalla Valley- Including the cities of Imperial Hot Mineral Springs, Winterhaven, Chiriaco Summit, and Midland 400 PM PDT Mon May 18 2026 .TONIGHT...Clear and cooler. Lows 53 to 63. North wind 5 to 15 mph. .TUESDAY...Mostly sunny, breezy and warmer. Highs 88 to 93. North wind 15 to 25 mph. .TUESDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 56 to 66. North wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 92 to 97. Northwest wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 57 to 67. Southwest wind 5 to 10 mph. .THURSDAY...Mostly sunny. Highs 88 to 98. .THURSDAY NIGHT...Clear. Lows 61 to 69. .FRIDAY...Sunny. Highs 88 to 98. .FRIDAY NIGHT...Clear. Lows 61 to 69. .SATURDAY...Sunny. Highs 88 to 98. .SATURDAY NIGHT...Clear. Lows 62 to 70. .SUNDAY...Sunny. Highs 90 to 100. .SUNDAY NIGHT...Clear. Lows 63 to 71. .MEMORIAL DAY...Sunny. Highs 91 to 101. $$ CAZ563-567-191100- Salton Sea-Imperial Valley- Including the cities of Desert Shores, El Centro, Calexico, Alamorio, and Brawley 400 PM PDT Mon May 18 2026 .TONIGHT...Clear. Lows 58 to 68. Northwest wind 5 to 10 mph. .TUESDAY...Mostly sunny and warmer. Highs 88 to 93. Northwest wind 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 70. Northwest wind 5 to 10 mph. .WEDNESDAY...Sunny and warmer. Highs 93 to 98. East wind 5 to 10 mph in the morning becoming southwest around 5 mph in the afternoon. .WEDNESDAY NIGHT...Clear. Lows 61 to 71. Southwest wind 5 to 10 mph in the evening becoming southeast after midnight. .THURSDAY...Sunny. Highs 90 to 100. .THURSDAY NIGHT...Clear. Lows 61 to 71. .FRIDAY...Sunny. Highs 91 to 99. .FRIDAY NIGHT...Clear. Lows 62 to 71. .SATURDAY...Sunny. Highs 91 to 99. .SATURDAY NIGHT...Clear. Lows 63 to 71. .SUNDAY...Sunny. Highs 93 to 101. .SUNDAY NIGHT...Clear. Lows 63 to 72. .MEMORIAL DAY...Sunny. Highs 93 to 101. $$ CAZ566-191100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 400 PM PDT Mon May 18 2026 .TONIGHT...Clear. Lows 57 to 67. West wind 5 to 10 mph. .TUESDAY...Mostly sunny and warmer. Highs 89 to 94. North wind 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 70. West wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 93 to 98. North wind around 5 mph. .WEDNESDAY NIGHT...Clear. Lows 62 to 72. West wind 5 to 10 mph. .THURSDAY...Sunny. Highs 97 to 101. .THURSDAY NIGHT...Clear. Lows 65 to 73. .FRIDAY...Sunny. Highs 97 to 101. .FRIDAY NIGHT...Clear. Lows 66 to 72. .SATURDAY...Sunny. Highs 96 to 100. .SATURDAY NIGHT...Clear. Lows 67 to 73. .SUNDAY...Sunny. Highs 98 to 102. .SUNDAY NIGHT...Clear. Lows 68 to 73. .MEMORIAL DAY...Sunny. Highs 98 to 102. $$ CAZ562-191100- Imperial County Southwest- Including the city of Mountain Spring 400 PM PDT Mon May 18 2026 .TONIGHT...Clear. Lows 60 to 70. Southwest wind 5 to 10 mph. .TUESDAY...Mostly sunny and warmer. Highs 89 to 94. Northeast wind 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 64 to 74. West wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 92 to 97. North wind 10 to 15 mph in the morning becoming northeast in the afternoon. .WEDNESDAY NIGHT...Clear. Lows 66 to 76. West wind 10 to 15 mph. .THURSDAY...Sunny. Highs 89 to 101. .THURSDAY NIGHT...Clear. Lows 63 to 77. .FRIDAY...Sunny. Highs 89 to 101. .FRIDAY NIGHT...Clear. Lows 62 to 75. .SATURDAY...Sunny. Highs 90 to 100. .SATURDAY NIGHT...Clear. Lows 63 to 76. .SUNDAY...Sunny. Highs 90 to 102. .SUNDAY NIGHT...Clear. Lows 63 to 76. .MEMORIAL DAY...Sunny. Highs 90 to 102. $$ CAZ560-561-191100- Joshua Tree NP West-Joshua Tree NP East- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 400 PM PDT Mon May 18 2026 .TONIGHT...Clear and cooler. Lows 50 to 60. Northwest wind 5 to 10 mph. .TUESDAY...Sunny and warmer. Highs 76 to 86. North wind 5 to 15 mph. .TUESDAY NIGHT...Clear. Lows 54 to 64. Northwest wind 5 to 10 mph. .WEDNESDAY...Sunny. Highs 80 to 90. North wind 5 to 10 mph. .WEDNESDAY NIGHT...Clear. Lows 57 to 67. West wind 5 to 10 mph. .THURSDAY...Mostly sunny. Highs 78 to 94. .THURSDAY NIGHT...Clear. Lows 53 to 69. .FRIDAY...Sunny. Highs 78 to 94. .FRIDAY NIGHT...Clear. Lows 52 to 68. .SATURDAY...Sunny. Highs 79 to 93. .SATURDAY NIGHT...Clear. Lows 52 to 69. .SUNDAY...Sunny. Highs 81 to 95. .SUNDAY NIGHT...Clear. Lows 53 to 71. .MEMORIAL DAY...Sunny. Highs 81 to 95. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix