| NWS Forecast for: Johnston County Issued by: National Weather Service Norman, OK Last Update: 1058 PM CDT Tue Jul 28 2026 | |
Overnight: Partly cloudy. Lows in the upper 70s. South winds around 5 mph. Wednesday: Mostly sunny. Hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 110. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southeast winds 5 to 10 mph. Heat index values up to 109 early in the evening. Thursday: Mostly sunny. Hot with highs around 101. South winds 5 to 10 mph. Heat index values up to 109. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. Friday: Mostly sunny. Hot with highs 100 to 105. Heat index values up to 110 in the afternoon. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. Saturday: Mostly sunny. Highs in the mid 90s. Saturday Night: Clear. Lows in the upper 60s. Sunday: Sunny. Highs in the lower 90s. Sunday Night: Clear. Lows in the upper 60s. Monday: Sunny. Highs in the mid 90s. Monday Night: Mostly clear. Lows in the lower 70s. Tuesday: Sunny. Highs in the upper 90s. | |
| Zone Forecast: Johnston County | |
Visit your local NWS office at: https://www.weather.gov/oun |