Historical Weather Records & Monthly Climate for Union City, CA

All-Time High
107°F
All-Time Low
-18°F
Max Daily Snow
8.5"
Max Wind Gust
24 mph

Monthly Climate Averages

Based on 30 years of historical data (1994 - 2023)

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January41°25°2.68"4.21"
February46°28°2.47"3.55"
March56°37°4.09"2.07"
April66°47°4.6"0.33"
May75°57°4.94"0
June84°66°4.09"0
July88°70°3.69"0
August87°69°3.45"0
September80°62°3.06"0
October68°51°3.47"0.01"
November55°39°3.16"0.91"
December45°30°2.47"2.85"

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