Extreme Heat Warning EXTREME HEAT WARNING - Johnson County
NWS North Mississippi Valley Regional Radar WU Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 08-Sep-2026 4:33am  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 77.4, Max: 81.0, Min: 77.4 77.4°F
Colder 0.9°F than last hour.

Comfortable

Feels like: 77°F

24-hr difference
3.3°FWarmer 3.3°F than yesterday at this time.
  Today Yesterday
High: 81°F
12:00am
96.8°F
2:25pm
Low: 77.4°F
4:30am
73.8°F
7:15am
 Wind from S S
2
Gust:
3.4 mph
1 Bft - Light air
Today: 4.5 mph 2:05am
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 0.03 in
Season Total: 78.31 in
2 days since last rain.
Tuesday

Tuesday: Sunny
Sunny
Humidity & Barometer Almanac Moon
Humidity: 76 % Increased 2.0% since last hour.
Dew Point: 69.2°F  
Barometer: 29.86 inHg  
Baro Trend: Steady
Sunrise: 6:54am
Sunset: 7:38pm
Moonrise: 3:53am
Moonset: 6:25pm
Waning Crescent
Waning Crescent, Moon at 25 days in cycle
10%
Illuminated
UV Index Solar Radiation
   0    None
High: 0 @ 12:00am
0 W/m2
High: 0 @  12:00am
 NWS Weather Forecast  - Outlook
Overnight

Overnight: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Slight Chance Showers And T-Storms then Showers And T-Storms Likely
Wednesday
Night
Wednesday Night: Showers And Thunderstorms
Showers And T-Storms
Thursday

Thursday: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Lo 75 °F Hi 98 °F Lo 77 °F Hi 91 °F Lo 68 °F Hi 83 °F Lo 65 °F
Detailed National Weather Service Forecast