Eureka, Calif.
H
I S T O R I C A L
W
E A T H E R
D
A T A
Average Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
52.7
48
49.3
49.4
50.2
52.8
55.5
57
57.9
57.3
54.7
51.7
48.4
°C
11
8
9
9
10
11
13
13
14
14
12
10
9
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average High Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
58.4
54.4
55.6
55.4
55.9
57.9
60.3
61.8
62.6
63
60.8
58.1
54.8
°C
14
12
13
13
13
14
15
16
17
17
16
14
12
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average Low Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
46.9
41.5
42.9
43.4
44.3
47.5
50.6
52.3
53.1
51.6
48.6
45.2
42
°C
8
5
6
6
6
8
10
11
11
10
9
7
5
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Highest Recorded Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
87
78
85
78
80
84
85
76
82
86
87
78
77
°C
30
25
29
25
26
28
29
24
27
30
30
25
25
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Lowest Recorded Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
21
25
27
29
32
36
41
45
44
41
32
29
21
°C
-6
-3
-2
-1
0
2
5
7
6
5
0
-1
-6
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Days Below 32°F/0°C
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
5
2
1
---
---
0
0
0
0
0
---
---
1
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Precipitation
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
in.
37.53
6
4.73
5.32
2.88
1.44
0.51
0.13
0.48
0.89
2.67
6.44
6.04
mm
953
152
120
135
73
36
12
3
12
22
67
163
153
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average Snowfall
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
in.
0.2
0.1
0.1
0
0
0
0
0
0
0
0
0
0
mm
5
2
2
0
0
0
0
0
0
0
0
0
0
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Wind Speed
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
mph
6.8
6.9
7.2
7.6
8
7.9
7.4
6.8
5.8
5.5
5.6
6
6.4
km/h
10
11
11
12
12
12
11
10
9
8
9
9
10
Years Charted: 54
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Days of Precipitation
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
117
16
14
16
12
8
5
2
3
4
9
13
15
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Days With Sunshine
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
%
51
43
46
52
57
58
59
55
50
54
50
44
41
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Cloudy Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
188
19
17
18
16
15
13
13
15
13
15
17
18
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Partly Cloudy Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
99
6
6
8
8
10
10
11
11
8
8
7
6
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Clear Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
78
6
5
5
6
6
7
7
5
9
8
6
7
Years Charted: 83
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
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