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Grundy Co
 Details for Grundy Co Severe Thunderstorm Warning  +1 additional alert
Severe Thunderstorm Warning SEVERE THUNDERSTORM WARNING - Grundy Co
Extreme Heat Warning EXTREME HEAT WARNING - Grundy Co

NWS Central Great Lakes Regional Radar WU Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 27-Jul-2026 3:30pm - next update at 3:35pm  
Summary / Temperature Wind Rain Outlook
Overcast and gloomy, Stopped raining Overcast and gloomy, Stopped raining
Currently: 78.5°F, Max: 91.3°F, Min: 77.1°F 78.5°F
Colder 6.8°F than last hour.

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Feels like: 77°F

24-hr difference
-9.4°FColder 9.4°F than yesterday at this time.
  Today Yesterday
High: 91.3°F
11:54am 		90.1°F
1:28pm
Low: 77.1°F
7:00am 		70.7°F
7:00am
Wind from SE SE
1.3
Gust:
 0 mph
1 Bft - Light Air
Today: 16.1 mph 11:26am
Gust Month: 16.0 mph July 27
Rain Today: 0.01 in
Rain Rate (/hr): 0.011 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 3.107 in
Season Total: 27.705 in
7 rain days in July.
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 3 %  
Dew Point: -8.9°F Decreased 4.6°F since last hour.
Barometer: 29.645 inHg Falling 0.06 inHg/hr
Baro Trend: Falling
Sunrise: 5:43am
Sunset: 8:15pm
Moonset: 3:26am
Moonrise: 6:49pm
Waxing Gibbous
Waxing Gibbous, Moon at 13 days in cycle
97%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 6.8 @ 11:49am
39 W/m2 (5 %)
High: 911 @  11:49am
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 94 °F		 NWS forecast: A chance of showers and thunderstorms. Mostly sunny. High near 94, with temperatures falling to around 92 in the afternoon. Heat index values as high as 111. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Davis VP+ forecast: Mostly cloudy and cooler, precipitation possible within 12 hours, possibly heavy at times, windy.
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 70 °F		 NWS forecast: A slight chance of showers and thunderstorms between 8pm and 11pm. Partly cloudy, with a low around 70. Heat index values as high as 107. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.