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Monthly
Forecasts
Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Union City, CA
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January
Average Temperature
High
15°
Feels 14
Low
5°
Feels 4
Average Precipitation
7 Days
Rain amount
48.8mm
Snow amount
0cm
Content continues below
Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
14°
9
13°
10
13°
11
15°
12
16°
13
17°
14
18°
15
18°
16
19°
17
18°
18
18°
19
17°
20
15°
21
15°
22
16°
23
24
25
26
27
28
29
30
31
Forecast
Thursday, January 8, 2026
Day
14°
Feels 12
Wind
24 km/h N
Gust
36 km/h
Humidity
24%
P.O.P
0%
Night
4°
Feels 3
Wind
16 km/h NE
Gust
24 km/h
Humidity
68%
P.O.P
20%
Historical Averages
Jan 8
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.