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Sites, CA Weather Forecast
Sites, CA Weather Forecast Date: 201 AM PDT Mon Oct 19 2026
The area/counties/county of: Central Colusa County Incl. I, including the city of Williams.or toggle through each period.
Today... Mostly sunny. Cooler. Highs around 70. East winds up to 10 mph.
Tonight... Mostly cloudy. Lows around 48. Light winds.
Tuesday... Mostly cloudy. Highs around 67. North winds up to 10 mph.
Tuesday Night... Mostly cloudy. A chance of rain after midnight. Lows 50 to 56. Light winds.
Wednesday... Mostly cloudy with a chance of rain. Highs around 72. Light winds becoming north up to 10 mph in the afternoon.
Wednesday Night... Mostly cloudy with a chance of rain. Lows around 51.
Thursday... Mostly cloudy with a chance of rain. Highs around 69.
Thursday Night... Partly cloudy. Lows around 48.
Friday... Mostly sunny. Highs around 70.
Friday Night... Clear. Lows 44 to 50.
Saturday... Mostly sunny. Highs around 71.
Saturday Night... Partly cloudy with a slight chance of rain. Lows 45 to 51.
POP = Probability of Precipitation
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