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Johnson County
 Details for Johnson County Extreme Heat Warning
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: @ 27-Jul-2026 2:49pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 99.3, Max: 99.9, Min: 80.4 99.3°F
Warmer 0.5°F than last hour.

Heat Danger

Feels like: 118°F

24-hr difference
2°FWarmer 2.0°F than yesterday at this time.
  Today Yesterday
High: 99.9°F
2:20pm 		98.2°F
2:10pm
Low: 80.4°F
6:15am 		77.4°F
6:25am
Wind from WSW WSW
1.3
Gust:
 2.2 mph
1 Bft - Light air
Today: 4.5 mph 10:50am
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 4.3 in
Season Total: 71.22 in
3 days since last rain.
Tonight

Tonight: Mostly Clear
Mostly Clear
Humidity & Barometer Almanac Moon
Humidity: 52 % Decreased 2.0% since last hour.
Dew Point: 78.5°F Decreased 0.5°F since last hour.
Barometer: 29.59 inHg Falling 0.02 inHg/hr
Baro Trend: Steady
Sunrise: 6:14am
Sunset: 8:36pm
Moonset: 4:04am
Moonrise: 7:47pm
Waxing Gibbous
Waxing Gibbous, Moon at 12 days in cycle
97%
Illuminated
UV Index Solar Radiation
   5     Medium 
High: 6 @ 12:10pm
586.05 W/m2
High: 656.76 @  12:55pm
 NWS Weather Forecast  - Outlook
This
Afternoon
This Afternoon: Sunny
Sunny
Tonight

Tonight: Mostly Clear
Mostly Clear
Tuesday

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

Wednesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Partly Cloudy then Chance Showers And Thunderstorms
Partly Cloudy then Chance Showers And T-Storms
Thursday

Thursday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Hi 99 °F Lo 78 °F Hi 89 °F Lo 73 °F Hi 87 °F Lo 72 °F Hi 87 °F
Detailed National Weather Service Forecast