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Countyline, OK Weather Forecast
Countyline, OK Weather Forecast Date: 139 AM CDT Fri Sep 18 2026
The area/counties/county of: Stephens, including the city of Duncan.or toggle through each period.
Rest of Tonight... Mostly clear. Lows in the mid 70s. South winds around 5 mph.
Friday... Sunny. Highs in the upper 90s. South winds 5 to 10 mph.
Friday Night... Mostly clear. Lows in the lower 70s. South winds 5 to 10 mph.
Saturday... Sunny. Highs in the upper 90s. South winds 5 to 10 mph.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. South winds 5 to 10 mph.
Sunday... Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 50%.
Sunday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50%.
Monday... Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40%.
Monday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20%.
Tuesday... Partly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20%.
Tuesday Night... Partly cloudy. Lows in the lower 60s.
Wednesday... Partly sunny. A chance of showers in the morning. Highs in the upper 80s. Chance of rain 30%.
Wednesday Night... Partly cloudy with a slight chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20%.
POP = Probability of Precipitation
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