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Grundy Co
 Details for Grundy Co Heat Advisory  +1 additional alert
Heat Advisory HEAT 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: @ 31-Aug-2026 11:10pm - next update at 11:15pm  
Summary / Temperature Wind Rain Outlook
Night time, Dry Night time, Dry
Currently: 79.5°F, Max: 94.1°F, Min: 69.0°F 79.5°F
Colder 1.0°F than last hour.

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Feels like: 83°F

24-hr difference
4.9°FWarmer 4.9°F than yesterday at this time.
  Today Yesterday
High: 94.1°F
2:29pm 		81.5°F
1:12pm
Low: 69°F
7:12am 		68.5°F
8:24am
Wind from SSE SSE
0.2
Gust:
 0 mph
0 Bft - Calm
Today: 14 mph 1:10pm
Gust Month: 23.0 mph August 10
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.167 in
Storm Rain: 0 in
This Month: 5.811 in
Season Total: 35.731 in
14 rain days in August.
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Humidity & Barometer Almanac Moon
Humidity: 82 %  
Dew Point: 73.5°F Decreased 1.0°F since last hour.
Barometer: 29.894 inHg  
Baro Trend: Steady
Sunrise: 6:19am
Sunset: 7:27pm
Moonset: 11:12am
Moonrise: 8:57pm
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
83%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 6.2 @ 12:38pm
0 W/m2 (0 %)
High: 884 @  12:38pm
 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%.
Davis VP+ forecast: Increasing clouds with little temp change.
 
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.