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Grundy County
 Details for Grundy County Flash Flood Warning  +1 additional alert

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Flash Flood Warning FLASH FLOOD WARNING - Grundy County
Flood Advisory FLOOD ADVISORY - Grundy County

NWS North Mississippi Valley Regional Radar WU North Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 12-Aug-2026 11:55am - next update at 6:00pm  
Summary / Temperature Wind Rain Outlook
Stopped raining Stopped raining
Currently: 72.2, Max: 75.6, Min: 68.6 72.2°F
Warmer 3.3°F than last hour.

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Feels like: 67°F

24-hr difference
4.1°FWarmer 4.1°F than yesterday at this time.
  Today Yesterday
High: 75.6°F
8:14am 		83.7°F
5:07pm
Low: 68.6°F
10:43am 		67.9°F
12:00pm
Wind from NW NW
1.5
Gust:
 1.0 mph
1 Bft - Light Air
Today: 26.5 mph 9:44am
Gust Month: 51.0 mph August 11
Rain Today: 1.38 in
Rain Rate (/hr): 0.000 in
Rain Yesterday: 1.22 in
Storm Rain: 2.60 in
This Month: 7.24 in
Season Total: 37.60 in
4 rain days in August.
Tonight

Tonight: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Humidity & Barometer Almanac Moon
Humidity: 96 % Increased 1.0% since last hour.
Dew Point: 71.0°F Increased 3.6°F since last hour.
Barometer: 29.806 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 5:59am
Sunset: 7:57pm
Moonrise: 5:40am
Moonset: 7:27pm
New Moon
New Moon, Moon at 29 days in cycle
0%
Illuminated
UV Index Solar Radiation
   2.7     Low 
High: 2.8 @ 11:51am
452 W/m2 (50 %)
High: 475 @  11:51am
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Showers And Thunderstorms
Showers And T-Storms

Hi 84 °F		 NWS forecast: Showers and thunderstorms. Some of the storms could be severe and produce heavy rain. Mostly cloudy. High near 84, with temperatures falling to around 81 in the afternoon. West wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
 
Tonight

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

Lo 69 °F		 NWS forecast: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East southeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.