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Grundy County
 Details for Grundy County Heat Advisory

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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: @ 01-Sep-2026 11:45pm - next update at 6:00pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 77.8, Max: 96.8, Min: 74.6 77.8°F
Colder 0.6°F than last hour.

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Feels like: 80°F

24-hr difference
-1.1°FColder 1.1°F than yesterday at this time.
  Today Yesterday
High: 96.8°F
4:13pm 		94.4°F
4:00pm
Low: 74.6°F
7:10am 		71.0°F
7:05am
Wind from S S
1.1
Gust:
 0.0 mph
0 Bft - Light Air
Today: 9.2 mph 1:07pm
Gust Month: 9.0 mph September 1
Rain Today: 0.00 in
Rain Rate (/hr): 0.000 in
Rain Yesterday: 0.01 in
Storm Rain: 0.00 in
This Month: 0.00 in
Season Total: 39.58 in
1 day since last rain.
Wednesday

Wednesday: Sunny
Sunny
Humidity & Barometer Almanac Moon
Humidity: 85 %  
Dew Point: 72.9°F Decreased 0.7°F since last hour.
Barometer: 29.909 inHg  
Baro Trend: Steady
Sunrise: 6:20am
Sunset: 7:25pm
Moonset: 12:26pm
Moonrise: 9:26pm
Waning Gibbous
Waning Gibbous, Moon at 19 days in cycle
73%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 4.6 @ 12:47pm
0 W/m2 (0 %)
High: 782 @  1:05pm
 NWS Weather Forecast  - Outlook: Tonight & Wednesday
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 73 °F		 NWS forecast: Mostly clear, with a low around 73. South southwest wind around 5 mph, with gusts as high as 15 mph.
 
Wednesday

Wednesday: Sunny
Sunny

Hi 94 °F		 NWS forecast: Sunny. High near 94, with temperatures falling to around 92 in the afternoon. Heat index values as high as 103. Southwest wind 5 to 15 mph.