Navigation

Alerts

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.
spacer
Updated: @ 02-Sep-2026 11:00pm - next update at 11:05pm  
Summary / Temperature Wind Rain Outlook
Night time, Humid Night time, Humid
Currently: 79.3°F, Max: 97.9°F, Min: 75.5°F 79.3°F
Colder 1.3°F than last hour.

---

Feels like: 83°F

24-hr difference
-0.4°FColder 0.4°F than yesterday at this time.
  Today Yesterday
High: 97.9°F
3:02pm 		97.3°F
3:22pm
Low: 75.5°F
7:00am 		75.3°F
6:41am
Calm SSW
0
Gust:
 0 mph
0 Bft - Calm
Today: 8.1 mph 1:18pm
Gust Month: 8.0 mph September 1
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 0 in
Season Total: 35.731 in
0 day since last rain.
Thursday

Thursday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Humidity & Barometer Almanac Moon
Humidity: 87 % Increased 3.0% since last hour.
Dew Point: 75.1°F Decreased 0.2°F since last hour.
Barometer: 29.873 inHg  
Baro Trend: Steady
Sunrise: 6:21am
Sunset: 7:23pm
Moonset: 1:38pm
Moonrise: 10:02pm
Waning Gibbous
Waning Gibbous, Moon at 20 days in cycle
63%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 6.1 @ 12:37pm
0 W/m2 (0 %)
High: 798 @  12:25pm
 NWS Weather Forecast  - Outlook: Tonight & Thursday
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 74 °F		 NWS forecast: Mostly clear, with a low around 74. South southwest wind around 5 mph, with gusts as high as 15 mph.
Davis VP+ forecast: Increasing clouds with little temp change.
 
Thursday

Thursday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms

Hi 92 °F		 NWS forecast: A slight chance of showers and thunderstorms after 3pm. Mostly sunny. High near 92, with temperatures falling to around 90 in the afternoon. Heat index values as high as 102. West southwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.