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Monthly
Forecasts
Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Costa Mesa, CA
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January
Average Temperature
High
20°
Feels 19
Low
8°
Feels 8
Average Precipitation
4 Days
Rain amount
26mm
Snow amount
0cm
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Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
17°
10
19°
11
22°
12
22°
13
21°
14
22°
15
21°
16
22°
17
22°
18
20°
19
20°
20
19°
21
18°
22
17°
23
18°
24
25
26
27
28
29
30
31
Forecast
Friday, January 9, 2026
Day
17°
Feels 17
Wind
24 km/h NE
Gust
36 km/h
Humidity
22%
P.O.P
20%
Night
11°
Feels 10
Wind
14 km/h SE
Gust
21 km/h
Humidity
39%
P.O.P
0%
Historical Averages
Jan 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.