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Upper Spring Lake, WI 7-Day Night Weather Forecast
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Upper Spring Lake, WI Weather Forecast
Upper Spring Lake, WI Weather Forecast Date: 731 PM CDT Tue Sep 15 2026
The area/counties/county of: Jefferson, including the cities of: Watertown, Fort Atkinson, and Jefferson.or toggle through each period.
Tonight... Mostly cloudy then becoming partly cloudy after midnight then becoming mostly cloudy. Lows in the upper 50s. North winds up to 5 mph.
Wednesday... Mostly cloudy. Highs in the lower 70s. East winds 5 to 10 mph.
Wednesday Night... Mostly cloudy. Chance of light showers and slight chance of thunderstorms in the late evening and overnight. Lows around 60. East winds up to 5 mph through around midnight becoming calm. Chance of precipitation 40%.
Thursday... Mostly cloudy. A 30% chance of light showers in the morning. Highs in the upper 70s. Northeast winds up to 5 mph.
Thursday Night... Mostly cloudy. Lows in the upper 50s. Northeast winds up to 5 mph.
Friday... Mostly cloudy. Chance of light rain showers in the morning, then light rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 70%.
Friday Night... Showers and chance of thunderstorms. Lows around 60. Chance of precipitation 90%.
Saturday... Cloudy. Showers and chance of thunderstorms in the morning, then chance of light showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 80%.
Saturday Night... Mostly cloudy with chance of showers and slight chance of thunderstorms. Lows around 60. Chance of precipitation 50%.
Sunday... Cloudy with a 40% chance of showers. Highs in the upper 60s.
Sunday Night... Mostly cloudy with a 30% chance of light rain showers. Lows in the mid 50s.
Monday... Mostly cloudy with a 30% chance of light rain showers. Highs in the upper 60s.
Monday Night... Mostly cloudy through around midnight then becoming partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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