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Johnstown, AR 7-Day Night Weather Forecast
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Johnstown, AR Weather Forecast
Johnstown, AR Weather Forecast Date: 1150 AM CDT Thu Sep 10 2026
The area/counties/county of: Jackson, including the city of Newport.or toggle through each period.
This Afternoon... Mostly sunny. A chance of showers and thunderstorms. Highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 50%. Average rainfall less than 1/10 inch. Heat index values up to 106.
Tonight... Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. North winds around 5 mph. Chance of rain 50%. Average rainfall less than 1/10 inch.
Friday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 90s. Northeast winds around 5 mph. Chance of rain 50%. Average rainfall less than 1/10 inch.
Friday Night... Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 70s. East winds around 5 mph, becoming south after midnight. Chance of rain 40%.
Saturday... Sunny. A slight chance of showers in the morning. Highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 20%. Heat index values up to 107.
Saturday Night... Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
Sunday... Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
Monday... Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
Tuesday... Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
POP = Probability of Precipitation
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