FNUS53 KLSX 181830 FWFLSX Fire Weather Planning Forecast for Eastern/Central MO and Southwest IL National Weather Service Saint Louis MO 129 PM CDT Mon May 18 2026 Several chances for showers and thunderstorms are forecast Monday morning through Tuesday night, with high confidence that the entire forecast area will receive rainfall during this timeframe. A cold front brings cooler and drier conditions Tuesday night into the end of the week. Additional chances for rain return late in the week with low certainty regarding the timing of the best chances. MOZ072-073-083-084-099-190900- Crawford MO-Washington MO-Dent MO-Iron MO-Reynolds MO- Including the cities of Potosi/Salem Ranger District and Salem 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Mcldy Precip Type Tstms Tstms Tstms Showers Chance Precip (%) 40 80 80 50 Chance of Thunder (%) 40 70 70 0 Temp (24h trend) 64 (-8) 85 (+3) 54 69 RH % (24h trend) 100 (+14) 67 (+1) 100 59 Wind 20ft AM(mph) S 5-9 G23 NE 3-7 G17 Wind 20ft PM(mph) S 7-11 G26 SW 4-8 G20 lgt/var NE 3-7 Precip Amount 0.23 0.46 0.21 0.05 Precip Duration 1 7 9 3 1700ft mixing temp 82 61 Mixing Hgt(ft-agl) 470 3150 480 3010 Transport Wnd (m/s) S 7 SW 9 N 5 NE 5 Transport Wnd (mph) S 16 SW 21 N 10 NE 10 Vent Rate (m/s-m) 810 12270 490 6150 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the lower 50s. Highs in the mid 70s. Northeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the upper 50s. Highs in the mid 70s. South winds 5 to 10 mph. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 50s. Highs in the lower 80s. Southwest winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows around 60. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 60s. Highs in the mid 80s. Southeast winds around 5 mph. $$ MOZ074-075-085-190900- Saint Francois MO-Sainte Genevieve MO-Madison MO- Including the cities of Farmington and Fredericktown Ranger District 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Pcldy Mcldy Mcldy Precip Type Tstms Tstms Tstms Tstms Chance Precip (%) 30 90 70 50 Chance of Thunder (%) 30 70 70 20 Temp (24h trend) 65 (-8) 85 (+1) 55 69 RH % (24h trend) 96 (+13) 65 (+2) 100 59 Wind 20ft AM(mph) SW 8-12 G24 N 5-9 G17 Wind 20ft PM(mph) S 9-13 G25 SW 6-10 G20 lgt/var N 4-8 G15 Precip Amount 0.20 0.41 0.22 0.04 Precip Duration 0 6 8 2 1700ft mixing temp 83 63 Mixing Hgt(ft-agl) 470 3510 470 2970 Transport Wnd (m/s) S 7 SW 9 W 5 NE 5 Transport Wnd (mph) S 16 SW 21 W 12 NE 12 Vent Rate (m/s-m) 800 12390 490 6030 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the lower 50s. Highs in the mid 70s. Northeast winds 5 to 10 mph. .FRIDAY...Showers and a chance of thunderstorms. Lows in the upper 50s. Highs in the mid 70s. South winds 5 to 10 mph. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 50s. Highs in the lower 80s. Southwest winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows around 60. Highs in the lower 80s. South winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 60s. Highs in the mid 80s. Southeast winds around 5 mph. $$ MOZ041-047>050-190900- Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO- Including the cities of Columbia, Cedar Creek Ranger District, Jefferson City, and Fulton 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms Showers Chance Precip (%) 60 80 30 10 Chance of Thunder (%) 50 50 30 0 Temp (24h trend) 64 (-1) 79 (+4) 50 66 RH % (24h trend) 100 (0) 67 (-12) 92 52 Wind 20ft AM(mph) S 6-10 G21 NE 5-9 G18 Wind 20ft PM(mph) S 10-14 G27 NW 6-10 G19 N 4-8 G16 NE 4-8 G16 Precip Amount 0.58 0.21 0.04 0.00 Precip Duration 2 6 2 1 1700ft mixing temp 71 58 Mixing Hgt(ft-agl) 470 2240 440 3470 Transport Wnd (m/s) S 9 SW 8 N 6 NE 6 Transport Wnd (mph) S 21 SW 18 N 13 NE 13 Vent Rate (m/s-m) 680 9580 420 7910 Poor Good Poor Good Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows around 50. Highs in the lower 70s. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the mid 50s. Highs in the lower 70s. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 50s. Highs around 80. Southwest winds 5 to 10 mph. .SUNDAY...Partly cloudy. A chance of showers. Lows in the upper 50s. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers. Lows in the lower 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$ MOZ051-059-060-062-065-190900- Montgomery MO-Gasconade MO-Warren MO-Franklin MO-Jefferson MO- Including the cities of Washington, Union, and Sullivan 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms Showers Chance Precip (%) 60 80 60 20 Chance of Thunder (%) 50 70 50 0 Temp (24h trend) 65 (-5) 84 (+8) 50 68 RH % (24h trend) 99 (+8) 68 (-7) 99 57 Wind 20ft AM(mph) S 6-10 G23 N 4-8 G17 Wind 20ft PM(mph) S 8-12 G25 W 5-9 G21 lgt/var NE 3-7 G15 Precip Amount 0.33 0.29 0.09 0.01 Precip Duration 2 7 4 2 1700ft mixing temp 79 59 Mixing Hgt(ft-agl) 460 2980 440 3530 Transport Wnd (m/s) S 7 SW 9 N 5 NE 5 Transport Wnd (mph) S 16 SW 21 N 12 NE 12 Vent Rate (m/s-m) 710 11320 490 7030 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the upper 40s. Highs in the lower 70s. Northeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 50s. Highs around 80. West winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows in the upper 50s. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers. Lows in the lower 60s. Highs in the mid 80s. Southeast winds around 5 mph. $$ MOZ061-063-064-190900- Saint Charles MO-Saint Louis MO-Saint Louis City MO- Including the cities of Saint Charles and Saint Louis 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms Showers Chance Precip (%) 60 80 60 20 Chance of Thunder (%) 60 70 60 0 Temp (24h trend) 66 (-6) 85 (+7) 53 69 RH % (24h trend) 99 (+13) 64 (-7) 92 53 Wind 20ft AM(mph) S 7-11 G21 N 5-9 G15 Wind 20ft PM(mph) S 9-13 G23 W 7-11 G20 NW 4-8 N 4-8 Precip Amount 0.13 0.25 0.09 0.00 Precip Duration 1 7 5 1 1700ft mixing temp 82 60 Mixing Hgt(ft-agl) 460 3300 460 3690 Transport Wnd (m/s) S 8 SW 9 N 5 NE 5 Transport Wnd (mph) S 17 SW 21 N 12 NE 12 Vent Rate (m/s-m) 880 11320 690 6750 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s. Northeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows in the upper 50s. Highs in the lower 80s. West winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows around 60. Highs in the mid 80s. South winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers. Lows in the mid 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$ ILZ064-065-069-070-074-079-100>102-190900- Bond IL-Fayette IL-Clinton IL-Marion IL-Washington IL-Randolph IL- Madison IL-Saint Clair IL-Monroe IL- Including the cities of Vandalia, Centralia, Salem, Chester, Sparta, Alton, Edwardsville, Belleville, and Cahokia 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Pcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms Showers Chance Precip (%) 50 80 70 30 Chance of Thunder (%) 20 70 50 0 Temp (24h trend) 66 (-6) 86 (+7) 56 69 RH % (24h trend) 98 (+16) 62 (-7) 96 55 Wind 20ft AM(mph) S 10-14 G22 N 6-10 G16 Wind 20ft PM(mph) S 9-13 G22 SW 9-13 G21 NW 3-7 N 5-9 Precip Amount 0.20 0.32 0.19 0.02 Precip Duration 1 5 9 2 1700ft mixing temp 83 62 Mixing Hgt(ft-agl) 450 3250 460 3860 Transport Wnd (m/s) S 7 SW 10 N 6 NE 6 Transport Wnd (mph) S 16 SW 23 N 13 NE 13 Vent Rate (m/s-m) 830 12490 650 7440 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s. Northeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Southeast winds 5 to 10 mph. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows around 60. Highs around 80. Southwest winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows in the lower 60s. Highs in the lower 80s. South winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers. Lows in the mid 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$ MOZ018-019-026-027-034>036-042-052-190900- Knox MO-Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO- Audrain MO-Lincoln MO- Including the cities of Hannibal, Bowling Green, and Mexico 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Mcldy Mcldy Pcldy Pcldy Precip Type Tstms Tstms Showers None Chance Precip (%) 70 50 10 0 Chance of Thunder (%) 50 50 0 0 Temp (24h trend) 63 (-1) 78 (0) 48 66 RH % (24h trend) 100 (0) 62 (-10) 84 50 Wind 20ft AM(mph) SW 8-12 G25 NE 6-10 G18 Wind 20ft PM(mph) S 10-14 G28 NW 7-11 G21 N 5-9 G19 NE 5-9 G16 Precip Amount 0.71 0.18 0.01 0.00 Precip Duration 5 3 2 1700ft mixing temp 67 59 Mixing Hgt(ft-agl) 470 2800 440 4160 Transport Wnd (m/s) S 8 N 8 N 7 NE 6 Transport Wnd (mph) S 18 N 17 N 15 NE 13 Vent Rate (m/s-m) 880 10160 560 8970 Poor Good Poor Good Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the upper 40s. Highs around 70. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the lower 50s. Highs in the upper 60s. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows in the mid 50s. Highs in the upper 70s. South winds 5 to 10 mph. .SUNDAY...Mostly cloudy. Lows in the upper 50s. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY...Mostly cloudy. Lows in the lower 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$ ILZ095>098-190900- Adams IL-Brown IL-Pike IL-Calhoun IL- Including the cities of Quincy, Mount Sterling, and Pittsfield 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Mcldy Mcldy Pcldy Pcldy Precip Type Tstms Tstms Tstms None Chance Precip (%) 60 70 20 0 Chance of Thunder (%) 50 50 20 0 Temp (24h trend) 64 (0) 79 (+4) 50 67 RH % (24h trend) 99 (0) 62 (-13) 83 49 Wind 20ft AM(mph) S 8-12 G25 N 6-10 G17 Wind 20ft PM(mph) S 10-14 G26 NW 7-11 G20 NW 5-9 G17 NE 5-9 G15 Precip Amount 0.49 0.18 0.02 0.00 Precip Duration 3 5 1 1700ft mixing temp 70 60 Mixing Hgt(ft-agl) 470 2650 450 4230 Transport Wnd (m/s) S 8 NW 8 N 6 NE 6 Transport Wnd (mph) S 18 NW 18 N 13 NE 13 Vent Rate (m/s-m) 840 9330 560 9050 Poor Good Poor Good Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the upper 40s. Highs around 70. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the lower 50s. Highs around 70. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows in the mid 50s. Highs in the upper 70s. South winds 5 to 10 mph. .SUNDAY...Mostly cloudy. Lows in the upper 50s. Highs in the lower 80s. South winds around 5 mph. .MONDAY...Mostly cloudy. Lows in the lower 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$ ILZ058>060-099-190900- Greene IL-Macoupin IL-Montgomery IL-Jersey IL- Including the city of Litchfield 129 PM CDT Mon May 18 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms None Chance Precip (%) 60 90 50 0 Chance of Thunder (%) 60 70 50 0 Temp (24h trend) 65 (-5) 82 (+7) 51 67 RH % (24h trend) 97 (+14) 64 (-9) 89 51 Wind 20ft AM(mph) S 10-14 G23 N 7-11 G17 Wind 20ft PM(mph) S 11-15 G24 W 9-13 G22 NW 5-9 G15 NE 6-10 Precip Amount 0.17 0.32 0.09 0.00 Precip Duration 2 6 2 1700ft mixing temp 80 61 Mixing Hgt(ft-agl) 480 2980 510 3690 Transport Wnd (m/s) S 8 SW 10 N 7 NE 6 Transport Wnd (mph) S 18 SW 22 N 16 NE 13 Vent Rate (m/s-m) 1000 11280 630 7770 Poor Good Poor Fair Remarks...None. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly cloudy. Lows in the mid 40s. Highs around 70. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. East winds 5 to 10 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows in the mid 50s. Highs in the upper 70s. West winds around 5 mph. .SUNDAY...Mostly cloudy. A chance of showers. Lows in the upper 50s. Highs in the lower 80s. South winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers. Lows in the lower 60s. Highs in the mid 80s. Southeast winds 5 to 10 mph. $$