EUREKA, CALIFORNIA
NORMALS, MEANS, AND EXTREMES

LATITUDE: 40 Deg. 48 Min. N LONGITUDE: 124 Deg. 09 Min. W ELEVATION: FT. GRND 19 BARO 20 TIME ZONE: PACIFIC WBAN: 24213

(a)
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
YEAR
TEMPERATURE (Deg. F)
Normals
-Daily Maximum
-Daily Minimum
-Monthly
Extremes
-Record Highest
-Year
-Record Lowest
-Year






85

85



54.4
41.5
48.0

78
1986
25
1937


55.6
42.9
49.3

85
1930
27
1990


55.4
43.4
49.4

78
1914
29
1917


55.9
44.3
50.2

80
1989
32
1929


57.9
47.5
52.8

84
1939
36
1954


60.3
50.6
55.5

85
1945
41
1966


61.8
52.3
57.0

76
1992
45
1924


62.6
53.1
57.9

82
1991
44
1935


63.0
51.6
57.3

86
1983
41
1946


60.8
48.6
54.7

87
1993
32
1971


58.1
45.2
51.7

78
1987
29
11994


54.8
42.0
48.4

77
1963
21
1972


58.4
46.9
52.7

87
OCT 1993
21
DEC 1972
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




527
0

440
0

484
0

444
0

378
0

285
0

248
0

223
0

234
0

319
0

399
0

515
0

4496
0
% OF POSSIBLE SUNSHINE
84
43
46
52
57
58
59
55
51
55
50
44
41
51
MEAN SKY COVER(tenths)
Sunrise - Sunset
MEAN NUMBER OF DAYS:
Sunrise to Sunset
-Clear
-Partly Cloudy
-Cloudy
Precipitation
.01 inches or more
Snow, Ice Pellets, Hail
1.0 inches or more
Thunderstorms
Heavy Fog Visibility
1/4 mile or less
Temperature Deg. F
-Maximum
90 Deg. F and above
32 Deg. F and below
-Minimum
32 Deg. F and below
0 Deg. F and below

53


85
85
85

85

85
72

72


85
85

85
85

7.2


5.9
6.2
18.8

16.1

0.1
0.7

4.1


0.0
0.0

1.9
0.0

7.4


5.3
5.7
17.3

14.1

0.*
0.6

2.7


0.0
0.0

0.8
0.0

7.3


5.6
7.7
17.7

15.6

0.0
0.4

1.9


0.0
0.0

0.2
0.0

7.0


6.2
8.3
15.5

11.8

0.0
0.2

1.7


0.0
0.0

0.*
0.0

6.7


6.4
9.8
14.7

8.4

0.0
0.2

1.2


0.0
0.0

0.0
0.0

6.5


7.2
9.5
13.2

5.3

0.0
0.2

2.1


0.0
0.0

0.0
0.0

6.5


6.6
10.8
13.6

2.2

0.0
0.2

3.5


0.0
0.0

0.0
0.0

6.8


5.6
10.8
14.6

2.6

0.0
0.1

5.4


0.0
0.0

0.0
0.0

6.0


8.7
8.5
12.8

4.5

0.0
0.3

7.8


0.0
0.0

0.0
0.0

6.5


8.2
8.3
14.5

8.5

0.0
0.4

9.6


0.0
0.0

0.*
0.0

7.1


6.3
6.6
17.1

13.1

0.0
0.6

6.2


0.0
0.0

0.3
0.0

7.1


6.4
6.4
18.2

15.4

0.*
0.6

4.4


0.0
0.0

1.4
0.0

6.8


78.4
98.7
188.1

117.7

0.1
4.4

50.6


0.0
0.0

4.6
0.0
AV. STATION PRES. (mb)














RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22






































































PRECIPITATION (in.)
Water Equivalent
-Normal
-Maximum Monthly
-Year
-Minimum Monthly
-Year
-Maximum in 24 hrs
-Year
Snow, Ice Pellets, Hail
-Maximum Monthly
-Year
-Maximum in 24 hrs
-Year



85

85

85


85

85



6.00
13.92
1969
0.66
1985
4.42
1912

3.0
1935
3.0
1935


4.73
13.94
1938
0.50
1923
4.88
1959

3.5
1989
2.0
1989


5.32
13.97
1938
0.07
1926
4.02
1975

1.0
1966
1.0
1966


2.88
10.68
1963
0.31
1956
2.56
1983

T
1995
T
1995


1.44
6.05
1960
0.03
1955
2.23
1943

0.0

0.0



0.51
2.57
1954
0.00
1917
1.73
1943

0.0

0.0



0.13
1.34
1916
0.00
1967
1.18
1916

0.0

0.0



0.48
3.42
1983
0.00
1940
2.21
1983

0.0

0.0



0.89
3.56
1925
0.00
1929
1.54
1977

0.0

0.0



2.67
13.04
1950
0.00
1917
5.83
1950

0.0

0.0



6.44
16.58
1973
T
1929
4.55
1926

0.1
1977
0.1
1977


6.04
14.13
1983
0.52
1976
4.17
1939

1.9
1972
1.9
1972


37.53
16.58
NOV 1973
0.00
JUL 1967
5.83
OCT 1950

3.5
FEB 1989
3.0
JAN 1935
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

54



83
83






6.9

SE

S
54
1955





7.2

SE

SW
48
1960





7.6

N

SW
48
1953





8.0

N

N
49
1915





7.9

N

NW
40
1955





7.4

N

NW
39
1949





6.8

N

N
35
1986





5.8

NW

N
34
1920





5.5

N

N
44
1941





5.6

N

SW
56
1962





6.0

SE

S
55
1981





6.4

SE

S
56
1931





6.8

N

SW
56
OCT 1962




(a) - Length of Record in Years, although individual months may be missing.
0.* or * - The value is between 0.0 and 0.05.
Normals - Based on the 1961 - 1990 record period.
Extremes - Dates are the most recent occurrence.
Wind Dir.- Numerals show tens of degrees clockwise from true north. "00" indicates calm.
Resultant Directions are given to whole degrees.