| NWS Forecast for: Johnston County Issued by: National Weather Service Norman, OK Last Update: 1242 PM CDT Mon Aug 18 2025 | |
Rest Of Today: Sunny with a slight chance of showers and thunderstorms. Near steady temperature in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat index values up to 107. Tonight: Mostly clear. Humid with lows in the mid 70s. Southeast winds around 5 mph in the evening, becoming light and variable. Heat index values up to 105 early in the evening. Tuesday: Sunny with highs in the upper 90s. Light and variable winds, becoming north around 5 mph in the afternoon. Heat index values up to 107. Tuesday Night: Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. Heat index values up to 105 early in the evening. Wednesday: Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. North winds around 5 mph. Chance of rain 40 percent. Heat index values up to 105. Wednesday Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 70s. Chance of rain 20 percent. Thursday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Thursday Night: Mostly clear. Lows in the upper 60s. Friday: Sunny. Highs in the lower 90s. Friday Night: Mostly clear. Lows in the upper 60s. Saturday: Sunny. Highs in the mid 90s. Saturday Night: Mostly clear. Lows around 70. Sunday: Mostly sunny. Highs in the lower 90s. | |
| Zone Forecast: Johnston County | |
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