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Grundy County
 Details for Grundy County Heat Advisory  +1 additional alert

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Heat Advisory HEAT 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: @ 31-Aug-2026 11:00pm - next update at 6:00pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 80.5, Max: 94.4, Min: 71.0 80.5°F
Colder 1.5°F than last hour.

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Feels like: 85°F

24-hr difference
6.9°FWarmer 6.9°F than yesterday at this time.
  Today Yesterday
High: 94.4°F
4:00pm 		80.1°F
4:01pm
Low: 71.0°F
7:05am 		67.4°F
5:29am
Wind from S S
1.4
Gust:
 2.0 mph
1 Bft - Light Air
Today: 16.1 mph 1:10pm
Gust Month: 50.9 mph August 11
Rain Today: 0.01 in
Rain Rate (/hr): 0.000 in
Rain Yesterday: 0.16 in
Storm Rain: 0.00 in
This Month: 9.22 in
Season Total: 39.58 in
10 rain days in August.
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Humidity & Barometer Almanac Moon
Humidity: 79 % Increased 3.0% since last hour.
Dew Point: 73.4°F Decreased 0.3°F since last hour.
Barometer: 29.891 inHg  
Baro Trend: Steady
Sunrise: 6:19am
Sunset: 7:27pm
Moonset: 11:13am
Moonrise: 8:57pm
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
83%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 4.6 @ 12:33pm
0 W/m2 (0 %)
High: 777 @  12:18pm
 NWS Weather Forecast  - Outlook: Tonight & Tuesday
Tonight

Tonight: Isolated Rain Showers
Isolated Rain Showers

Lo 73 °F		 NWS forecast: Isolated rain showers before 1am. Partly cloudy, with a low around 73. South southwest wind around 5 mph. Chance of precipitation is 20%.
 
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny

Hi 92 °F		 NWS forecast: Mostly sunny, with a high near 92. Heat index values as high as 105. West southwest wind 5 to 15 mph, with gusts as high as 25 mph.