Point Forecast: 2 Miles SW Union City CA
 37.58N 122.04W (Elev. 121 ft)
Last Update: 3:02 pm PDT Jul 14, 2025
Tabular Forecast
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Weather ElementsWeather/Precipitation
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Trans. Wind  
20ft Wind  

48-Hour Period Starting:       Back 2 Days  

Date07/1507/16
Hour (PDT)010203040506070809101112131415161718192021222300
Temperature (°F)585858575858586162656872747575747372686461605959
Dewpoint (°F)545454545454555657585860596061605959575756565554
Heat Index (°F)7575
Surface Wind (mph)655333335567910111313131311111199
Wind DirNWNWNWNWNNWNWWNWWWWNWWNWWNWWNWNWWNWWNWNWWNWWNWWWWWW
Gust20202018
Sky Cover (%)64677073777674705535126211222246142222
Precipitation Potential (%)000011111111111122222266
Relative Humidity (%)868686888787888482777065616060606264707883858686
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/17
Hour (PDT)010203040506070809101112131415161718192021222300
Temperature (°F)585858575858586061636668707272727068656260595958
Dewpoint (°F)545453535354545556565757585859585858575756555555
Heat Index (°F)
Surface Wind (mph)977766655566611111114141410101088
Wind DirWWSWWSWWSWWSWWSWWSWSSWSSWSSWWSWWSWWSWWWWWWWWWWWSWWSW
Gust212121
Sky Cover (%)225050506969696363631919192222221010102323
Precipitation Potential (%)666622222233333311111133
Relative Humidity (%)868585868686868582787369656362646672778285868787
Rain------------------------------------------------
Thunder------------------------------------------------

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
River Stage Summary24 Hour Precipitation Summary
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