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Grundy Co
 Details for Grundy Co Heat Advisory
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: @ 28-Jun-2026 12:20pm - next update at 12:25pm  
Summary / Temperature Wind Rain Outlook
Mainly cloudy, Dry Mainly cloudy, Dry
Currently: 82.2°F, Max: 83.0°F, Min: 66.8°F 82.2°F
Warmer 2.0°F than last hour.

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Feels like: 87°F

24-hr difference
3.1°FWarmer 3.1°F than yesterday at this time.
  Today Yesterday
High: 83°F
11:51am 		82.2°F
2:38pm
Low: 66.8°F
7:00am 		64.6°F
4:41am
Wind from S S
0.9
Gust:
 0 mph
0 Bft - Calm
Today: 6 mph 10:44am
Gust Month: 21.0 mph June 10
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 9.947 in
Season Total: 24.598 in
14 rain days in June.
Tonight

Tonight: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 72 % Decreased 2.0% since last hour.
Dew Point: 72.3°F Increased 1.2°F since last hour.
Barometer: 29.88 inHg  
Baro Trend: Steady
Sunrise: 5:22am
Sunset: 8:30pm
Moonset: 3:45am
Moonrise: 7:14pm
Waxing Gibbous
Waxing Gibbous, Moon at 13 days in cycle
98%
Illuminated
UV Index Solar Radiation
   7.1     High 
High: 7.3 @ 11:56am
515 W/m2 (51 %)
High: 960 @  11:20am
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 84 °F		 NWS forecast: A chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Davis VP+ forecast: Increasing clouds with little temp change.
 
Tonight

Tonight: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy

Lo 76 °F		 NWS forecast: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.