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Waterloo, WI Weather Forecast
Waterloo, WI Weather Forecast Date: 1030 AM CDT Sat Oct 31 2026
The area/counties/county of: Jefferson, including the cities of: Watertown, Fort Atkinson, and Jefferson.or toggle through each period.
Rest of Today... Mostly cloudy with scattered light rain showers. Highs around 60. Southeast winds 5 to 10 mph. Chance of showers 40%.
Tonight... Mostly cloudy. Isolated light rain showers in the evening. Lows in the upper 40s. Southeast winds up to 5 mph through around midnight becoming calm. Chance of showers 20%.
Sunday... Partly sunny. Highs in the mid 60s. Southeast winds up to 5 mph.
Sunday Night... Partly cloudy through around midnight then becoming mostly cloudy. Lows around 50. Southeast winds 5 to 10 mph.
Monday... Mostly cloudy. Chance of light rain showers in the morning, then light rain showers likely in the afternoon. Highs in the mid 60s. Southeast winds 5 to 15 mph. Chance of showers 60%.
Monday Night... Light rain showers likely through around midnight, then light rain showers and slight chance of thunderstorms after midnight. Breezy. Lows in the upper 50s. Chance of precipitation 90%.
Tuesday... Light showers. Breezy. Highs in the upper 60s. Chance of showers 90%.
Tuesday Night... Mostly cloudy. Light rain showers likely through around midnight, then chance of light rain showers after midnight. Lows around 50. Chance of showers 70%.
Wednesday... Mostly cloudy with a 40% chance of light rain showers. Highs in the lower 60s.
Wednesday Night... Mostly cloudy through around midnight then becoming partly cloudy. A 20% chance of light rain showers. Lows in the mid 40s.
Thursday... Partly sunny with a 30% chance of light rain showers. Highs in the lower 60s.
Thursday Night... Mostly cloudy with a 20% chance of light rain showers. Lows in the mid 40s.
POP = Probability of Precipitation
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