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Beloit, IL Weather Forecast
Beloit, IL Weather Forecast Date: 430 AM CDT Thu Oct 22 2026
The area/counties/county of: Rock, including the cities of: Janesville and Beloit.or toggle through each period.
Early This Morning... Clear. Patchy fog. Calm winds.
Today... Sunny. Patchy fog in the morning. Highs in the mid 70s. East winds up to 5 mph.
Tonight... Mostly clear. Lows in the upper 40s. Southeast winds up to 5 mph.
Friday... Sunny. Highs in the lower 70s. Southeast winds up to 10 mph.
Friday Night... Partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph.
Saturday... Partly sunny. Highs in the lower 70s. South winds 5 to 15 mph.
Saturday Night... Partly cloudy. Lows in the lower 50s.
Sunday... Partly sunny. Highs in the lower 70s.
Sunday Night... Partly cloudy through around midnight then becoming mostly cloudy. Lows in the upper 40s.
Monday... Mostly cloudy. Highs in the mid 60s.
Monday Night... Mostly cloudy with a 20% chance of light rain showers. Lows in the mid 40s.
Tuesday... Mostly cloudy with a 30% chance of light rain showers. Highs in the upper 50s.
Tuesday Night... Mostly cloudy through around midnight, then partly cloudy with a 20% chance of light rain showers after midnight. Lows in the lower 40s.
POP = Probability of Precipitation
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