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Grundy Co
 Details for Grundy Co Flood Warning  +2 additional alerts
Flood Warning FLOOD WARNING - Grundy Co
Flood Advisory FLOOD ADVISORY - 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: @ 10-Aug-2026 5:40am - next update at 5:45am  
Summary / Temperature Wind Rain Outlook
Dawn, Humid Dawn, Humid
Currently: 73.0°F, Max: 91.6°F, Min: 66.7°F 73°F
Colder 0.5°F than last hour.

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Feels like: 70°F

24-hr difference
7.2°FWarmer 7.2°F than yesterday at this time.
  Today Yesterday
High: 91.6°F
1:49pm 		84.9°F
2:36pm
Low: 66.7°F
7:00am 		64.9°F
4:42am
Wind from SSE SSE
1.4
Gust:
 1 mph
0 Bft - Light Air
Today: 23 mph 12:17am
Gust Month: 23.0 mph August 10
Rain Today: 0.29 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0.3 in
This Month: 0.735 in
Season Total: 30.654 in
4 rain days in August.
Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Humidity & Barometer Almanac Moon
Humidity: 91 % Increased 2.0% since last hour.
Dew Point: 70.2°F Increased 0.1°F since last hour.
Barometer: 29.844 inHg  
Baro Trend: Steady
Sunrise: 5:57am
Sunset: 7:59pm
Moonrise: 3:02am
Moonset: 6:46pm
Waning Crescent
Waning Crescent, Moon at 26 days in cycle
7%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 6.7 @ 1:38pm
0 W/m2 (0 %)
High: 1011 @  1:25pm
 NWS Weather Forecast  - Outlook: Overnight & Monday
Overnight

Overnight: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Lo 73 °F		 NWS forecast: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
Davis VP+ forecast: Increasing clouds with little temp change.
 
Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 87 °F		 NWS forecast: A chance of showers and thunderstorms. Partly sunny, with a high near 87. Heat index values as high as 98. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.