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City of Jefferson, IAJefferson, IA 7-Day Night Weather Forecast
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Jefferson, IA Weather Forecast
Jefferson, IA Weather Forecast Date: 538 PM CDT Fri Sep 18 2026
The area/counties/county of: Greene, including the city of Jefferson.or toggle through each period.
Tonight... Mostly cloudy with a chance of thunderstorms. A chance of showers. Patchy fog after midnight. Lows in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, becoming south after midnight. Chance of rain 50%.
Saturday... Mostly cloudy. Patchy fog in the morning. A chance of showers and thunderstorms, mainly in the morning. Humid with highs in the upper 70s. Northwest winds around 5 mph. Chance of rain 40%.
Saturday Night... Cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Humid with lows around 60. North winds 5 to 10 mph. Chance of rain 30%.
Sunday... Cloudy with a 50% chance of showers. Highs in the upper 60s. Northeast winds around 10 mph with gusts up to 20 mph.
Sunday Night... Cloudy with a 50% chance of showers. Lows in the mid 50s. Northeast winds 5 to 10 mph.
Monday... Showers likely. Highs in the lower 60s. Chance of rain 70%.
Monday Night... Mostly cloudy. A chance of showers in the evening. Lows around 50. Chance of rain 30%.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 60s.
Tuesday Night... Partly cloudy. Lows in the mid 40s.
Wednesday... Mostly sunny. Highs in the mid 60s.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50.
Thursday... Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the upper 60s. Chance of rain 20%.
Thursday Night... Mostly cloudy. A slight chance of showers after midnight. Lows in the lower 50s. Chance of rain 20%.
POP = Probability of Precipitation
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