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 Details for Naperville Flash Flood Warning  +2 additional alerts
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 Details for Campton Hills Extreme Heat Warning

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Flash Flood Warning FLASH FLOOD WARNING - Naperville
Extreme Heat Warning EXTREME HEAT WARNING - Campton Hills
Severe Thunderstorm Watch SEVERE THUNDERSTORM WATCH - Naperville
Heat Advisory HEAT ADVISORY - Naperville

NWS Central Great Lakes Regional Radar WU North Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 27-Jul-2026 2:48pm - next update at 2:51pm  
Summary / Temperature Wind Rain Outlook
Moderate drizzle, Light thunderstorm, Overcast Moderate drizzle, Light thunderstorm, Overcast
Currently: 70.4, Max: 83.8, Min: 70.4 70.4°F
Colder 3.9°F than last hour.

Comfortable

Feels like: 70°F

24-hr difference
-19.1°FColder 19.1°F than yesterday at this time.
  Today Yesterday
High: 83.8°F
10:21am 		89.9°F
4:16pm
Low: 70.4°F
2:45pm 		71°F
12:00am
Wind from E E
1
Gust:
 2 mph
0 Bft - Calm
Today: 8 mph 12:10pm
Gust Month: 25.0 mph July 3
Rain Today: 0.01 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
This Month: 0.82 in
Season Total: 16.06 in
0 day since last rain.
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 74 % Increased 1.0% since last hour.
Dew Point: 61.7°F Decreased 0.9°F since last hour.
Barometer: 29.691 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 5:40am
Sunset: 8:17pm
Moonset: 3:24am
Moonrise: 7:30pm
Waxing Gibbous
Waxing Gibbous, Moon at 12 days in cycle
97%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 1.6 @ 10:20am
33 W/m2
High: 424 @  8:55am
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Hi 92 °F		 NWS forecast: A slight chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny. High near 92, with temperatures falling to around 86 in the afternoon. Heat index values as high as 107. Southwest wind around 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.
Davis VP+ forecast: Mostly cloudy and cooler. Windy with possible wind shift to the W, NW, or N.
 
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 69 °F		 NWS forecast: A chance of showers and thunderstorms between 7pm and 10pm. Partly cloudy, with a low around 69. Heat index values as high as 99. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
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