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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: @ 29-Jun-2026 12:10pm - next update at 12:15pm  
Summary / Temperature Wind Rain Outlook
Mainly cloudy, Dry Mainly cloudy, Dry
Currently: 88.7°F, Max: 91.7°F, Min: 77.1°F 88.7°F
Warmer 0.3°F than last hour.

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Feels like: 103°F

24-hr difference
6°FWarmer 6.0°F than yesterday at this time.
  Today Yesterday
High: 91.7°F
11:37am 		85.9°F
3:45pm
Low: 77.1°F
7:00am 		66.8°F
7:00am
Wind from SSW SSW
1.8
Gust:
 2 mph
1 Bft - Light Air
Today: 12 mph 9:46am
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: Partly Cloudy
Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 71 % Increased 1.0% since last hour.
Dew Point: 78.1°F Increased 1.0°F since last hour.
Barometer: 29.887 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 5:22am
Sunset: 8:29pm
Moonset: 4:37am
Moonrise: 8:08pm
Full Moon
Full Moon, Moon at 14 days in cycle
100%
Illuminated
UV Index Solar Radiation
   3.8     Medium 
High: 9.1 @ 11:49am
325 W/m2 (33 %)
High: 1197 @  11:49am
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny

Hi 91 °F		 NWS forecast: Mostly sunny, with a high near 91. Heat index values as high as 106. South southwest wind around 15 mph, with gusts as high as 25 mph.
Davis VP+ forecast: Increasing clouds with little temp change.
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 77 °F		 NWS forecast: Partly cloudy, with a low around 77. Heat index values as high as 103. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.