| NWS Forecast for: Harper County Issued by: National Weather Service Norman, OK Last Update: 938 PM CDT Tue Aug 18 2026 |  |
Tonight: Mostly clear. Lows in the mid 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Wednesday: Sunny. Highs in the upper 90s. Northeast winds 5 to 10 mph. Wednesday Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows in the upper 60s. Northeast winds 10 to 15 mph. Chance of rain 20 percent. Thursday: Partly sunny in the morning, then clearing. Hot with highs around 100. East winds 5 to 10 mph. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Southeast winds 5 to 10 mph. Friday: Sunny, hot with highs around 100. Friday Night: Mostly clear. Lows in the lower 70s. Saturday: Sunny, hot with highs 100 to 105. Saturday Night: Mostly clear. Lows in the mid 70s. Sunday: Sunny, hot with highs 105 to 110. Sunday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Monday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 105. Chance of rain 20 percent. Monday Night: Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent. Tuesday: Mostly sunny. Hot with highs 100 to 105. | |
| Zone Forecast: Harper County | |
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