Union City, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Union City now
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Union City weather by the hour
Union City weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Union City.
This week in Union City
Sunrise, sunset and moon in Union City
What is the weather usually like in Union City?
Köppen climate classification, calculated from the 1991–2020 normals
- Septemberwarmest month · 78°F average high
- Januarycoldest month · 42°F average low
- 15.9 inprecipitation per year · 405 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Union City: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station FREMONT, CA US (USC00043244), adjusted for the elevation of Union City.
Union City weather month by month
Sunrise and sunset in Union City through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:20 AM | 5:15 PM | 9 h 54 min |
| February | 6:55 AM | 5:48 PM | 10 h 53 min |
| March | 7:17 AM | 7:16 PM | 11 h 59 min |
| April | 6:31 AM | 7:44 PM | 13 h 13 min |
| May | 5:56 AM | 8:12 PM | 14 h 15 min |
| June | 5:44 AM | 8:32 PM | 14 h 48 min |
| July | 5:57 AM | 8:30 PM | 14 h 33 min |
| August | 6:22 AM | 8:02 PM | 13 h 39 min |
| September | 6:49 AM | 7:17 PM | 12 h 28 min |
| October | 7:15 AM | 6:32 PM | 11 h 16 min |
| November | 6:46 AM | 4:58 PM | 10 h 11 min |
| December | 7:14 AM | 4:52 PM | 9 h 37 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Union City?
Union City has a warm-summer mediterranean climate. The warmest month is September, with an average high of 78°F (26°C), and the coldest is January, with average lows of 42°F (6°C).
It gets about 15.9 inches (405 mm) of precipitation a year. The wettest month is February and the driest is July.
The best time to visit Union City is June to September. At 69 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Union City
Weather in towns near Union City
Questions about the weather in Union City
What is the hottest month in Union City?
September, with an average high of 78°F (26°C).
What is the coldest month in Union City?
January, with an average low of 42°F (6°C).
How much does it rain in Union City?
About 15.9 inches (405 mm) a year; the wettest month is February.
Does it snow in Union City?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Union City?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Union City have?
Warm-summer mediterranean (Köppen Csb).
What is the weather like in Union City in November?
Highs average 65°F and lows 46°F, with about 1.6 inches of precipitation.
What time is sunrise in Union City?
Around 6:46 AM in mid-November, and sunset around 4:58 PM. Today’s exact times are shown above.
Where does this Union City weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Union City.
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