FPUS55 KTWC 180913 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 212 AM MST Mon May 18 2026 AZZ501-190200- Western Pima County- Including Ajo and Organ Pipe Cactus N.M. 212 AM MST Mon May 18 2026 .TODAY...Mostly sunny. Highs 83 to 88. .TONIGHT...Mostly clear. Lows 56 to 61. .TUESDAY...Mostly sunny. Highs 88 to 93. .TUESDAY NIGHT...Mostly cloudy. Lows 60 to 65. .WEDNESDAY...Partly cloudy. Highs 90 to 95. .WEDNESDAY NIGHT...Mostly clear. Lows 60 to 65. .THURSDAY...Sunny. Highs 92 to 97. .THURSDAY NIGHT...Mostly clear. Lows 61 to 66. .FRIDAY THROUGH SATURDAY...Clear. Highs 92 to 97. Lows 62 to 67. .SATURDAY NIGHT...Mostly clear. Lows 63 to 68. .SUNDAY...Sunny. Highs 94 to 99. $$ AZZ502-190200- Tohono O'odham Nation- Including Sells 212 AM MST Mon May 18 2026 .TODAY...Sunny. Highs 81 to 86. .TONIGHT...Clear. Lows 56 to 61. .TUESDAY...Mostly sunny. Highs 86 to 91. .TUESDAY NIGHT...Mostly cloudy. Lows 59 to 65. .WEDNESDAY...Mostly cloudy. Highs 88 to 93. .WEDNESDAY NIGHT...Mostly clear. Lows 58 to 64. .THURSDAY...Sunny. Highs 90 to 95. .THURSDAY NIGHT AND FRIDAY...Clear. Lows 60 to 66. Highs 90 to 95. .FRIDAY NIGHT...Mostly clear. Lows 60 to 66. .SATURDAY...Sunny. Highs 90 to 95. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 61 to 67. Highs 92 to 97. $$ AZZ503-190200- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 212 AM MST Mon May 18 2026 .TODAY...Windy, sunny. Highs 78 to 84. Southwest wind 20 to 30 mph. .TONIGHT...Clear. Lows 48 to 54. .TUESDAY...Mostly sunny. Highs 82 to 88. .TUESDAY NIGHT...Mostly cloudy. Lows 52 to 58. .WEDNESDAY...Mostly cloudy. Highs 83 to 89. .WEDNESDAY NIGHT...Partly cloudy. Lows 51 to 57. .THURSDAY...Sunny. Highs 84 to 90. .THURSDAY NIGHT AND FRIDAY...Clear. Lows 52 to 58. Highs 84 to 90. .FRIDAY NIGHT...Mostly clear. Lows 53 to 59. .SATURDAY...Sunny. Highs 84 to 90. .SATURDAY NIGHT...Mostly clear. Lows 54 to 60. .SUNDAY...Sunny. Highs 86 to 92. $$ AZZ504-190200- Tucson Metro Area- Including Tucson, Green Valley, Marana, and Vail 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 82 to 88. South wind 10 to 15 mph becoming southwest 15 to 25 mph in the afternoon. .TONIGHT...Clear. Lows 54 to 60. West wind 10 to 15 mph becoming south after midnight. .TUESDAY...Mostly sunny. Highs 86 to 92. South wind around 5 mph becoming southwest 5 to 15 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 58 to 64. Southwest wind 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Highs 87 to 93. South wind around 5 mph becoming southwest 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 58 to 64. .THURSDAY...Sunny. Highs 88 to 94. .THURSDAY NIGHT...Mostly clear. Lows 59 to 65. .FRIDAY...Sunny. Highs 88 to 94. .FRIDAY NIGHT...Mostly clear. Lows 60 to 66. .SATURDAY...Sunny. Highs 88 to 94. .SATURDAY NIGHT...Mostly clear. Lows 61 to 67. .SUNDAY...Sunny. Highs 90 to 96. $$ AZZ505-190200- South Central Pinal County- Including Picacho Peak State Park 212 AM MST Mon May 18 2026 .TODAY...Sunny. Highs 82 to 87. .TONIGHT...Clear. Lows 56 to 62. .TUESDAY...Mostly sunny. Highs 86 to 91. .TUESDAY NIGHT...Partly cloudy. Lows 59 to 65. .WEDNESDAY...Mostly cloudy. Highs 88 to 93. .WEDNESDAY NIGHT...Mostly clear. Lows 59 to 65. .THURSDAY...Sunny. Highs 89 to 94. .THURSDAY NIGHT AND FRIDAY...Clear. Lows 61 to 66. Highs 90 to 95. .FRIDAY NIGHT...Mostly clear. Lows 62 to 67. .SATURDAY...Sunny. Highs 91 to 96. .SATURDAY NIGHT...Mostly clear. Lows 64 to 69. .SUNDAY...Sunny. Highs 92 to 97. $$ AZZ506-190200- Southeast Pinal County- Including Mammoth and Oracle 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 80 to 86. West wind 15 to 25 mph inthe afternoon. .TONIGHT...Clear. Lows 56 to 61. .TUESDAY...Sunny. Highs 84 to 90. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 65. .WEDNESDAY...Mostly cloudy. Highs 85 to 91. .WEDNESDAY NIGHT...Partly cloudy. Lows 59 to 64. .THURSDAY...Sunny. Highs 86 to 92. .THURSDAY NIGHT...Mostly clear. Lows 60 to 65. .FRIDAY...Sunny. Highs 87 to 93. .FRIDAY NIGHT...Mostly clear. Lows 61 to 66. .SATURDAY...Sunny. Highs 87 to 93. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 62 to 67. Highs 89 to 95. $$ AZZ507-190200- Upper San Pedro River Valley- Including Sierra Vista and Benson 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 79 to 84. Southwest wind 15 to 25 mph with gusts to around 40 mph. .TONIGHT...Clear. Lows 48 to 54. .TUESDAY...Mostly sunny. Highs 83 to 88. .TUESDAY NIGHT...Partly cloudy. Lows 52 to 58. .WEDNESDAY...Mostly cloudy. Highs 83 to 88. .WEDNESDAY NIGHT...Partly cloudy. Lows 51 to 57. .THURSDAY...Mostly sunny. Highs 83 to 88. .THURSDAY NIGHT...Mostly clear. Lows 52 to 58. .FRIDAY...Sunny. Highs 82 to 88. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 52 to 60. Highs 82 to 88. .SUNDAY...Sunny. Highs 84 to 90. $$ AZZ508-190200- Eastern Cochise County below 5000 feet- Including Willcox and Douglas 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 81 to 86. Southwest wind 15 to 25 mph. .TONIGHT...Mostly clear. Lows 48 to 54. .TUESDAY...Mostly sunny. Highs 85 to 90. .TUESDAY NIGHT...Partly cloudy. Lows 52 to 58. .WEDNESDAY...Mostly cloudy. Highs 84 to 89. .WEDNESDAY NIGHT...Partly cloudy. Lows 51 to 57. .THURSDAY...Mostly sunny. Highs 84 to 89. .THURSDAY NIGHT...Mostly clear. Lows 51 to 57. .FRIDAY...Sunny. Highs 84 to 89. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 52 to 59. Highs 84 to 91. $$ AZZ509-190200- Upper Gila River Valley- Including Clifton and Safford 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 79 to 87. West wind 15 to 25 mph in the afternoon. .TONIGHT...Mostly clear. Lows 52 to 58. .TUESDAY...Mostly sunny. Highs 83 to 91. .TUESDAY NIGHT...Partly cloudy. Lows 55 to 61. .WEDNESDAY...Mostly cloudy. Highs 83 to 91. .WEDNESDAY NIGHT...Partly cloudy. Lows 54 to 60. .THURSDAY...Mostly sunny. Highs 83 to 91. .THURSDAY NIGHT...Mostly clear. Lows 55 to 61. .FRIDAY...Sunny. Highs 84 to 92. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 56 to 64. Highs 84 to 94. $$ AZZ510-190200- White Mountains of Graham and Greenlee Counties- Including Hannagan Meadow 212 AM MST Mon May 18 2026 .TODAY...Sunny. Highs 66 to 76. Gusts up to 35 mph in the morning. .TONIGHT...Mostly clear. Lows 41 to 53. .TUESDAY...Mostly sunny. Highs 70 to 80. .TUESDAY NIGHT...Partly cloudy. Lows 45 to 57. .WEDNESDAY...Mostly cloudy. Highs 71 to 81. .WEDNESDAY NIGHT...Partly cloudy. Lows 44 to 56. .THURSDAY...Mostly sunny. Highs 72 to 82. .THURSDAY NIGHT...Mostly clear. Lows 44 to 56. .FRIDAY...Sunny. Highs 73 to 83. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 46 to 59. Highs 74 to 85. $$ AZZ511-190200- Galiuro and Pinaleno Mountains- Including Mount Graham 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 67 to 77. West wind 15 to 25 mph in the afternoon. .TONIGHT...Mostly clear. Lows 48 to 54. .TUESDAY...Mostly sunny. Highs 71 to 81. .TUESDAY NIGHT...Partly cloudy. Lows 53 to 59. .WEDNESDAY...Mostly cloudy. Highs 72 to 82. .WEDNESDAY NIGHT...Partly cloudy. Lows 52 to 58. .THURSDAY...Mostly sunny. Highs 72 to 82. .THURSDAY NIGHT...Mostly clear. Lows 52 to 58. .FRIDAY...Sunny. Highs 73 to 83. .FRIDAY NIGHT...Mostly clear. Lows 53 to 59. .SATURDAY...Sunny. Highs 73 to 83. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 54 to 60. Highs 75 to 85. $$ AZZ512-190200- Chiricahua Mountains-Including Chiricahua N.M. 212 AM MST Mon May 18 2026 .TODAY...Windy. Mostly sunny. Highs 72 to 80. Southwest wind 20 to 30 mph with gusts to around 45 mph. .TONIGHT...Mostly clear. Lows 47 to 53. .TUESDAY...Sunny. Highs 76 to 84. .TUESDAY NIGHT...Mostly cloudy. Lows 51 to 57. .WEDNESDAY...Mostly cloudy. Highs 75 to 83. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 56. .THURSDAY...Mostly sunny. Highs 74 to 82. .THURSDAY NIGHT...Mostly clear. Lows 50 to 56. .FRIDAY...Sunny. Highs 75 to 83. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 51 to 58. Highs 75 to 85. $$ AZZ513-190200- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including Bisbee, Canelo Hills, and Madera Canyon 212 AM MST Mon May 18 2026 .TODAY...Windy, sunny. Highs 73 to 79. Southwest wind 20 to 30 mph with gusts to around 45 mph. .TONIGHT...Clear. Lows 48 to 53. .TUESDAY...Mostly sunny. Highs 76 to 84. .TUESDAY NIGHT...Partly cloudy. Lows 52 to 57. .WEDNESDAY...Mostly cloudy. Highs 77 to 83. .WEDNESDAY NIGHT...Partly cloudy. Lows 51 to 56. .THURSDAY...Mostly sunny. Highs 77 to 83. .THURSDAY NIGHT...Mostly clear. Lows 52 to 57. .FRIDAY...Sunny. Highs 77 to 83. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 53 to 59. Highs 77 to 83. .SUNDAY...Sunny. Highs 79 to 85. $$ AZZ514-190200- Catalina and Rincon Mountains- Including Mount Lemmon and Summerhaven 212 AM MST Mon May 18 2026 .TODAY...Breezy, sunny. Highs 65 to 77. Southwest wind 15 to 25 mph. .TONIGHT...Clear. Lows 49 to 55. .TUESDAY...Mostly sunny. Highs 69 to 81. .TUESDAY NIGHT...Partly cloudy. Lows 53 to 59. .WEDNESDAY...Mostly cloudy. Highs 69 to 81. .WEDNESDAY NIGHT...Partly cloudy. Lows 53 to 59. .THURSDAY...Mostly sunny. Highs 70 to 82. .THURSDAY NIGHT...Mostly clear. Lows 53 to 59. .FRIDAY...Sunny. Highs 72 to 84. .FRIDAY NIGHT...Mostly clear. Lows 55 to 61. .SATURDAY...Sunny. Highs 72 to 84. .SATURDAY NIGHT...Mostly clear. Lows 56 to 62. .SUNDAY...Sunny. Highs 74 to 86. $$ AZZ515-190200- Baboquivari Mountains- Including Kitt Peak 212 AM MST Mon May 18 2026 .TODAY...Windy, sunny. Highs 71 to 77. Southwest wind 20 to 30 mph. .TONIGHT...Clear. Lows 51 to 56. .TUESDAY...Mostly sunny. Highs 76 to 82. .TUESDAY NIGHT...Mostly cloudy. Lows 56 to 61. .WEDNESDAY...Mostly cloudy. Highs 77 to 83. .WEDNESDAY NIGHT...Mostly clear. Lows 55 to 60. .THURSDAY...Sunny. Highs 78 to 84. .THURSDAY NIGHT AND FRIDAY...Clear. Lows 57 to 62. Highs 80 to 86. .FRIDAY NIGHT...Mostly clear. Lows 58 to 63. .SATURDAY...Sunny. Highs 80 to 86. .SATURDAY NIGHT...Mostly clear. Lows 59 to 64. .SUNDAY...Sunny. Highs 82 to 88. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson