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Watertown, IL Weather Forecast
Watertown, IL Weather Forecast Date: 121 PM CDT Sat Oct 24 2026
The area/counties/county of: Ogle, including the cities of: Rochelle, Oregon, and Byron.or toggle through each period.
This Afternoon... Partly cloudy. Highs in the lower 70s. South winds 5 to 10 mph.
Tonight... Partly cloudy. Lows in the upper 40s. South winds around 5 mph.
Sunday... Partly cloudy. Highs in the mid 70s. South winds around 5 mph.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. South winds around 5 mph, becoming east after midnight.
Monday... Mostly cloudy. Highs in the upper 60s. East winds 5 to 10 mph.
Monday Night... Mostly cloudy. Lows in the mid 40s.
Tuesday... Mostly cloudy. Highs in the lower 70s.
Tuesday Night... Mostly cloudy. Lows in the lower 50s.
Wednesday... Partly cloudy in the morning, then clearing. Highs in the mid 70s.
Wednesday Night... Partly cloudy. Lows in the mid 50s.
Thursday... Partly cloudy. Highs in the mid 70s.
Thursday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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