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: @ 04-Sep-2026 11:21pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 80.8, Max: 99.5, Min: 74.8 80.8°F
 

Warm

Feels like: 85°F

24-hr difference
-2.5°FColder 2.5°F than yesterday at this time.
  Today Yesterday
High: 99.5°F
2:55pm
99.5°F
2:55pm
Low: 74.8°F
5:55am
74.8°F
5:55am
 Calm SW
0
Gust:
0 mph
0 Bft - Calm
Today: 4.5 mph 11:25am
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 0 in
Season Total: 78.28 in
16 days since last rain.
Saturday

Saturday: Sunny
Sunny
Humidity & Barometer Almanac Moon
Humidity: 73 % Decreased 2.0% since last hour.
Dew Point: 71.3°F Decreased 0.9°F since last hour.
Barometer: 29.81 inHg Falling 0.01  inHg/hr
Baro Trend: Steady
Sunrise: 6:51am
Sunset: 7:45pm
Moonrise: 12:00am
Moonset: 3:15pm
Waning Crescent
Waning Crescent, Moon at 22 days in cycle
40%
Illuminated
UV Index Solar Radiation
   0    None
High: 5 @ 11:40am
0 W/m2
High: 572.44 @  1:10pm
 NWS Weather Forecast  - Outlook
Tonight

Tonight: Mostly Clear
Mostly Clear
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Labor
Day
Labor Day: Sunny
Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Lo 75 °F Hi 98 °F Lo 74 °F Hi 97 °F Lo 73 °F Hi 95 °F Lo 75 °F
Detailed National Weather Service Forecast