FNUS53 KMKX 181000 FWFMKX Fire Weather Planning Forecast for Southern Wisconsin National Weather Service Milwaukee/Sullivan WI 500 AM CDT Mon May 18 2026 .DISCUSSION... Morning scattered thunderstorms and showers will be possible before a lull in activity this afternoon. Then, widespread thunderstorms are expected again tonight during the overnight hours. Expecte highs in the upper 70s to low 80s today with min RH values around 60%. Winds will be breezy out of the southwest. WIZ046-047-056-057-182315- Marquette-Green Lake-Sauk-Columbia- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, and Lodi 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Patchy fog until 0700. Chance of showers and thunderstorms until 1200Slight chance of showers and thunderstorms after 1200. Chance of precipitation 50 percent. Max temperature.....77-82. Min humidity........56-61 percent. 20-foot winds.......South winds 8 to 13 mph. Hours of Sun........4 Hours. Precipitation.......Scattered 0.05 to 0.10 inch amounts. Mixing Height.......Around 2900 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 16 mph (Ave 12-6 pm). Smoke dispersal.....Around 42000 or good (Ave 12-6 PM). .TONIGHT... Sky/weather.........Partly cloudy until 2200, then mostly cloudy. Chance of rain showers until 2400. Chance of thunderstorms. Rain showers after 2400. Chance of precipitation 90 percent. Min temperature.....59-64. Max humidity........92-97 percent. 20-foot winds.......South winds 11 to 16 mph with gusts to around 30 mph. Precipitation.......Widespread 0.20 to 0.30 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers until 0700. Chance of thunderstorms until 1300. Chance of rain showers after 0700 until 1300. Chance of precipitation 90 percent. Max temperature.....68-73. Min humidity........47-52 percent. 20-foot winds.......Southwest winds 12 to 17 mph shifting to the west 11 to 16 mph in the afternoon. Gusts up to 30 mph. Hours of Sun........5 Hours. Precipitation.......Widespread 0.05 to 0.10 inch amounts. Mixing Height.......Around 3500 ft AGL (Ave 12-6 PM). Transport winds.....Northwest around 20 mph (Ave 12-6 pm). Smoke dispersal.....Around 62000 or excellent (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Partly cloudy. Lows 40 to 45. Northwest winds 8 to 13 mph. .WEDNESDAY...Mostly sunny. Highs 60 to 65. North winds 5 to 9 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 35 to 40. East winds 5 to 6 mph. .THURSDAY...Partly sunny. Highs 60 to 65. East winds 5 to 9 mph. .THURSDAY NIGHT...Partly cloudy. Lows 40 to 45. East winds 5 to 9 mph. .FRIDAY...Partly sunny. Slight chance of rain showers. Highs 65 to 70. East winds 5 to 9 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 8 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Highs 70 to 75. Southeast winds 5 to 7 mph. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. Northwest winds 5 to 6 mph. .SUNDAY...Partly sunny. Highs 80 to 85. Southwest winds 5 to 6 mph. $$ WIZ062-063-067-068-182315- Iowa-Dane-Lafayette-Green- Including the cities of Dodgeville, Mineral Point, Barneveld, Madison, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, and Brodhead 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Chance of thunderstorms until 1200. Chance of rain showers. Slight chance of thunderstorms after 1200. Chance of precipitation 50 percent. Max temperature.....77-82. Min humidity........57-62 percent. 20-foot winds.......South winds 10 to 15 mph with gusts to around 30 mph. Hours of Sun........4 Hours. Precipitation.......Scattered 0.10 to 0.20 inch amounts. Mixing Height.......Around 2700 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 17 mph (Ave 12-6 pm). Smoke dispersal.....Around 41000 or good (Ave 12-6 PM). .TONIGHT... Sky/weather.........Partly cloudy until 2100, then mostly cloudy. Chance of rain showers until 2400. Chance of thunderstorms. Rain showers after 2400. Chance of precipitation 90 percent. Min temperature.....60-65. Max humidity........92-97 percent. 20-foot winds.......South winds 12 to 17 mph with gusts to around 30 mph. Precipitation.......Widespread 0.10 to 0.20 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers until 0700. Chance of thunderstorms until 1300. Chance of rain showers after 0700 until 1300. Chance of precipitation 90 percent. Max temperature.....69-74. Min humidity........48-53 percent. 20-foot winds.......Southwest winds 12 to 17 mph shifting to the northwest 11 to 16 mph in the afternoon. Gusts up to 30 mph. Hours of Sun........6 Hours. Precipitation.......Widespread Trace to 0.05 inch amounts. Mixing Height.......Around 3400 ft AGL (Ave 12-6 PM). Transport winds.....Northwest around 19 mph (Ave 12-6 pm). Smoke dispersal.....Around 59000 or good (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Mostly clear. Lows 40 to 45. Northwest winds 9 to 14 mph. .WEDNESDAY...Mostly sunny. Highs 60 to 65. North winds 5 to 9 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 40 to 45. East winds 5 to 6 mph. .THURSDAY...Partly sunny. Highs 60 to 65. East winds 6 to 11 mph. .THURSDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 6 to 11 mph. Chance of showers 20 percent. .FRIDAY...Partly sunny. Slight chance of rain showers. Highs 65 to 70. East winds 5 to 9 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 9 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Slight chance of rain showers. Highs 75 to 80. Southeast winds 5 to 7 mph. Chance of showers 20 percent. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. West winds 5 to 6 mph. .SUNDAY...Partly sunny. Highs 80 to 85. Southwest winds 5 to 6 mph. $$ WIZ051-058-059-182315- Fond du Lac-Dodge-Washington- Including the cities of Fond Du Lac, Beaver Dam, Waupun, Mayville, West Bend, Germantown, and Hartford 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Patchy fog until 0800. Chance of showers and thunderstorms until 1200, then slight chance of showers and thunderstorms. Chance of precipitation 50 percent. Max temperature.....78-83. Min humidity........58-63 percent. 20-foot winds.......Southwest winds 9 to 14 mph. Hours of Sun........4 Hours. Precipitation.......Scattered 0.05 to 0.10 inch amounts. Mixing Height.......Around 2600 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 17 mph (Ave 12-6 pm). Smoke dispersal.....Around 39000 or good (Ave 12-6 PM). .TONIGHT... Sky/weather.........Partly cloudy until 1900, then mostly cloudy until 2000, then partly cloudy until 2300, then mostly cloudy. Chance of rain showers until 2400. Chance of thunderstorms. Rain showers likely after 2400. Chance of precipitation 70 percent. Min temperature.....61-66. Max humidity........89-94 percent. 20-foot winds.......South winds 12 to 17 mph with gusts to around 30 mph. Precipitation.......Areas of 0.10 to 0.20 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers likely until 0700. Chance of thunderstorms until 1300. Chance of rain showers after 0700 until 1300. Chance of precipitation 70 percent. Max temperature.....72-77. Min humidity........53-58 percent. 20-foot winds.......Southwest winds 13 to 18 mph shifting to the west late in the afternoon. Gusts up to 35 mph. Hours of Sun........6 Hours. Precipitation.......Areas of Trace to 0.05 inch amounts. Mixing Height.......Around 3400 ft AGL (Ave 12-6 PM). Transport winds.....West around 21 mph (Ave 12-6 pm). Smoke dispersal.....Around 62000 or excellent (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Partly cloudy. Lows 40 to 45. Northwest winds 11 to 16 mph with gusts to around 30 mph. .WEDNESDAY...Mostly sunny. Highs 60 to 65. North winds 7 to 12 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 35 to 40. East winds 5 to 6 mph. .THURSDAY...Partly sunny. Highs 60 to 65. East winds 5 to 9 mph. .THURSDAY NIGHT...Partly cloudy. Lows 40 to 45. East winds 5 to 8 mph. .FRIDAY...Partly sunny. Slight chance of rain showers. Highs 65 to 70. East winds 5 to 10 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 9 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Highs 70 to 75. East winds 5 to 7 mph. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. Northwest winds 5 to 6 mph. .SUNDAY...Partly sunny. Highs 75 to 80. Southwest winds 5 to 7 mph. $$ WIZ064-065-069-070-182315- Jefferson-Waukesha-Rock-Walworth- Including the cities of Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, Janesville, Beloit, Whitewater, Delavan, Elkhorn, Lake Geneva, and East Troy 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Rain showers likely until 1200. Chance of thunderstorms. Chance of rain showers after 1200. Chance of precipitation 70 percent. Max temperature.....78-83. Min humidity........59-64 percent. 20-foot winds.......Southwest winds 10 to 15 mph with gusts to around 30 mph. Hours of Sun........4 Hours. Precipitation.......Areas of 0.10 to 0.20 inch amounts. Mixing Height.......Around 2600 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 18 mph (Ave 12-6 pm). Smoke dispersal.....Around 40000 or good (Ave 12-6 PM). .TONIGHT... Sky/weather.........Mostly cloudy until 1900, then partly cloudy until 2200, then mostly cloudy. Slight chance of showers and thunderstorms until 2400, then rain showers likely and chance of thunderstorms. Chance of precipitation 70 percent. Min temperature.....61-66. Max humidity........89-94 percent. 20-foot winds.......South winds 12 to 17 mph with gusts to around 30 mph. Precipitation.......Areas of Trace to 0.05 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers likely and chance of thunderstorms until 1300. Chance of precipitation 70 percent. Max temperature.....73-78. Min humidity........55-60 percent. 20-foot winds.......Southwest winds 13 to 18 mph shifting to the west 12 to 17 mph in the afternoon. Gusts up to 35 mph. Hours of Sun........6 Hours. Precipitation.......Areas of Trace to 0.05 inch amounts. Mixing Height.......Around 3300 ft AGL (Ave 12-6 PM). Transport winds.....West around 20 mph (Ave 12-6 pm). Smoke dispersal.....Around 57000 or good (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Partly cloudy. Lows 45 to 50. Northwest winds 9 to 14 mph. .WEDNESDAY...Partly sunny. Highs 60 to 65. North winds 5 to 9 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 35 to 40. East winds 5 to 8 mph. .THURSDAY...Partly sunny. Highs 60 to 65. East winds 6 to 11 mph. .THURSDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 40 to 45. East winds 6 to 11 mph. Chance of showers 20 percent. .FRIDAY...Partly sunny. Slight chance of rain showers. Highs 65 to 70. East winds 5 to 10 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 9 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Highs 70 to 75. Southeast winds 5 to 7 mph. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. Northwest winds 5 to 7 mph. .SUNDAY...Partly sunny. Highs 75 to 80. Southwest winds 5 to 7 mph. $$ WIZ052-060-182315- Sheboygan-Ozaukee- Including the cities of Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Mequon, Cedarburg, and Grafton 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Patchy fog until 0800. Chance of showers and thunderstorms. Chance of precipitation 50 percent. Max temperature.....77-82. Min humidity........58-63 percent. 20-foot winds.......Southwest winds 8 to 13 mph. Hours of Sun........4 Hours. Precipitation.......Areas of 0.05 to 0.10 inch amounts. Mixing Height.......Around 1700 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 16 mph (Ave 12-6 pm). Smoke dispersal.....Around 22000 or fair (Ave 12-6 PM). .TONIGHT... Sky/weather.........Partly cloudy until 1900, then mostly cloudy until 2000, then partly cloudy until 0100, then mostly cloudy. Slight chance of showers and thunderstorms until 2400, then rain showers likely and chance of thunderstorms. Chance of precipitation 70 percent. Min temperature.....59-64. Max humidity........91-96 percent. 20-foot winds.......South winds 10 to 15 mph. Gusts up to 25 mph increasing to 30 mph early in the morning. Precipitation.......Areas of 0.05 to 0.10 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers likely until 0700. Chance of thunderstorms until 1300. Chance of rain showers after 0700 until 1300. Chance of precipitation 70 percent. Max temperature.....75-80. Min humidity........51-56 percent. 20-foot winds.......Southwest winds 12 to 17 mph shifting to the west late in the afternoon. Gusts up to 35 mph. Hours of Sun........7 Hours. Precipitation.......Areas of Trace to 0.05 inch amounts. Mixing Height.......Around 2400 ft AGL (Ave 12-6 PM). Transport winds.....West around 21 mph (Ave 12-6 pm). Smoke dispersal.....Around 46000 or good (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Partly cloudy. Lows 40 to 45. Northwest winds 10 to 15 mph with gusts to around 30 mph. .WEDNESDAY...Partly sunny. Highs 55 to 60. North winds 5 to 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 35 to 40. East winds 5 to 6 mph. .THURSDAY...Partly sunny. Highs 55 to 60. East winds 5 to 9 mph. .THURSDAY NIGHT...Partly cloudy. Lows 40 to 45. East winds 5 to 6 mph. .FRIDAY...Partly sunny. Slight chance of rain showers. Highs 60 to 65. East winds 5 to 9 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 8 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Highs 65 to 70. East winds 5 to 8 mph. .SATURDAY NIGHT...Partly cloudy. Lows 45 to 50. Northwest winds 5 to 6 mph. .SUNDAY...Partly sunny. Highs 70 to 75. Southwest winds 5 to 7 mph. $$ WIZ066-071-072-182315- Milwaukee-Racine-Kenosha- Including the cities of Milwaukee, Racine, and Kenosha 500 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Partly sunny. Rain showers likely until 1200. Chance of thunderstorms. Chance of rain showers after 1200. Chance of precipitation 60 percent. Max temperature.....78-83. Min humidity........57-62 percent. 20-foot winds.......Southwest winds 10 to 15 mph with gusts to around 30 mph. Hours of Sun........4 Hours. Precipitation.......Areas of 0.10 to 0.20 inch amounts. Mixing Height.......Around 1800 ft AGL (Ave 12-6 PM). Transport winds.....Southwest around 17 mph (Ave 12-6 pm). Smoke dispersal.....Around 27000 or fair (Ave 12-6 PM). .TONIGHT... Sky/weather.........Mostly cloudy until 2000, then partly cloudy until 2100, then mostly cloudy until 2200, then partly cloudy until 2400, then mostly cloudy until 0400, then partly cloudy until 0500, then mostly cloudy. Slight chance of showers and thunderstorms until 2400, then rain showers likely and chance of thunderstorms. Chance of precipitation 70 percent. Min temperature.....62-67. Max humidity........87-92 percent. 20-foot winds.......South winds 10 to 15 mph with gusts to around 30 mph. Precipitation.......Areas of Trace to 0.05 inch amounts. .TUESDAY... Sky/weather.........Partly sunny. Rain showers likely until 1300. Chance of thunderstorms. Chance of rain showers after 1300. Chance of precipitation 70 percent. Max temperature.....77-82. Min humidity........50-55 percent. 20-foot winds.......Southwest winds 12 to 17 mph shifting to the west 11 to 16 mph late in the afternoon. Gusts up to 35 mph. Hours of Sun........6 Hours. Precipitation.......Areas of Trace to 0.05 inch amounts. Mixing Height.......Around 2500 ft AGL (Ave 12-6 PM). Transport winds.....West around 19 mph (Ave 12-6 pm). Smoke dispersal.....Around 47000 or good (Ave 12-6 PM). .FORECAST DAYS 3 THROUGH 7... .TUESDAY NIGHT...Partly cloudy. Lows 45 to 50. Northwest winds 8 to 13 mph. .WEDNESDAY...Partly sunny. Highs 55 to 60. Northeast winds 5 to 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 40 to 45. Northeast winds 5 to 9 mph. .THURSDAY...Partly sunny. Highs 55 to 60. East winds 5 to 10 mph. .THURSDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 9 mph. Chance of showers 20 percent. .FRIDAY...Mostly cloudy. Slight chance of rain showers. Highs 60 to 65. East winds 5 to 9 mph. Chance of showers 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. East winds 5 to 7 mph. Chance of showers 20 percent. .SATURDAY...Partly sunny. Highs 70 to 75. East winds 5 to 8 mph. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. Northwest winds 5 to 6 mph. .SUNDAY...Partly sunny. Highs 75 to 80. Southwest winds 5 to 9 mph. $$