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Precipitation
Temperature
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°Celsius
°Fahrenheit
Monthly Historical Averages
Arcata / Eureka, Arcata Airport, CA
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September
Average Temperature
High
18°
Feels 17
Low
10°
Feels 10
Average Precipitation
3 Days
Rain amount
17.4mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
17°
3
16°
4
17°
5
17°
6
16°
7
17°
8
18°
9
18°
10
18°
11
18°
12
17°
13
18°
14
19°
15
19°
16
18°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Wednesday, September 2, 2026
Day
17°
Feels 16
Wind
34 km/h S
Gust
51 km/h
Humidity
77%
P.O.P
100%
Rain
10-15 mm
Night
14°
Feels 13
Wind
27 km/h S
Gust
41 km/h
Humidity
100%
P.O.P
100%
Rain
~10 mm
Historical Averages
Sep 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.