STOCKTON, CALIFORNIA
NORMALS, MEANS, AND EXTREMES

LATITUDE: 37 Deg. 54 Min. N LONGITUDE: 121 Deg. 15 Min. W ELEVATION: FT. GRND 22 BARO 37 TIME ZONE: PACIFIC WBAN: 23237

(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






36

36



53.0
37.0
45.0

71
1981
19
1963


60.7
40.3
50.5

78
1977
22
1989


65.5
42.6
54.1

87
1988
27
1971


72.9
45.7
59.3

100
1981
32
1976


81.6
51.8
66.7

107
1984
38
1964


89.1
57.5
73.3

111
1961
45
1971


94.4
60.9
77.7

114
1972
50
1981


92.9
60.7
76.8

109
1983
50
1968


87.9
57.5
72.7

108
1979
43
1982


78.3
50.8
64.6

101
1980
33
1972


63.4
42.7
53.0

84
1966
25
1985


52.8
37.1
45.0

72
1987
17
1990


74.4
48.7
61.6

114
JUL 1972
17
DEC 1990
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




620
0

406
0

341
0

211
40

13
106

7
256

0
394

0
366

10
241

79
67

3611
0

62
0

2707
1470
% OF POSSIBLE SUNSHINE














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

46


46
46
46

53

41
33

38


36
36

36
36

7.3


5.3
6.3
19.3

8.9

0.0
0.2

11.8


0.0
0.1

7.9
0.0

6.5


7.1
6.5
14.7

8.2

0.0
0.3

7.5


0.0
0.0

2.6
0.0

5.7


9.9
8.5
12.8

8.5

0.0
0.4

1.6


0.0
0.0

0.8
0.0

4.9


11.8
8.7
9.5

5.3

0.0
0.7

0.4


0.7
0.0

0.1
0.0

3.5


17.5
8.5
5.1

2.4

0.0
0.3

0.1


6.5
0.0

0.0
0.0

2.3


21.8
5.7
2.5

0.8

0.0
0.3

0.*


14.2
0.0

0.0
0.0

1.2


26.8
3.3
0.9

0.3

0.0
0.1

0.0


23.5
0.0

0.0
0.0

1.4


25.7
3.9
1.4

0.4

0.0
0.2

0.*


21.7
0.0

0.0
0.0

1.8


23.4
4.4
2.2

1.0

0.0
0.4

0.1


13.6
0.0

0.0
0.0

3.3


19.2
6.0
5.8

3.0

0.0
0.2

1.9


3.1
0.0

0.0
0.0

5.7


9.2
8.5
12.3

6.4

0.0
0.1

7.6


0.0
0.0

1.6
0.0

7.1


6.7
6.5
17.8

6.6

0.0
0.1

11.0


0.0
0.*

8.3
10.0

4.2


184.4
76.8
104.3

51.6

0.0
3.2

42.0


83.3
0.1

21.2
0.0
AV. STATION PRES. (mb)
12
1018.5
1017.7
1015.9
1015.6
1012.7
1012.0
1011.6
1011.5
1012.0
1014.7
1018.7
1020.1
1015.1
RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22

19
27
22
19

90
87
70
86

88
79
61
82

83
67
51
74

78
54
40
69

74
45
32
62

69
42
28
56

65
42
26
50

67
44
27
52

69
48
30
57

75
57
38
64

85
75
58
79

91
87
72
87

78
61
44
68
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



54

54

54


41

41



2.84
7.06
1967
0.14
1976
3.01
1967

0.0

0.0



1.97
6.00
1962
0.05
1964
2.28
1945

0.3
1976
0.3
1976


2.17
6.48
1982
T
1956
1.71
1968

T
1995
T
1995


1.08
3.55
1958
0.00
1949
1.54
1958

T
1970
T
1970


0.26
2.33
1990
0.00
1982
1.66
1990

T
1994
T
1994


0.08
0.66
1964
0.00
1981
0.53
1964

0.0

0.0



0.06
0.61
1974
0.00
1983
0.57
1974

0.0

0.0



0.07
0.81
1975
0.00
1982
0.81
1975

0.0

0.0



0.35
3.00
1959
0.00
1980
2.64
1959

0.0

0.0



0.79
2.97
1945
0.00
1978
1.88
1991

0.0

0.0



2.17
6.22
1972
0.00
1995
2.23
1950

0.0

0.0



2.11
8.05
1955
0.03
1989
3.01
1955

0.2
198
0.2
1988


13.95
8.05
DEC 1955
0.00
NOV 1995
3.01
JAN 1967

0.3
FEB 1976
0.3
FEB 1976
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

35



32







6.7

SE

14
46
1967





6.9

SE

10
40
1994





7.7

W

33
39
1970





8.3

W

24
35
1964





9.2

W

35
35
1978





9.2

W

29
35
1995





8.2

WNW

23
29
1987





7.7

WNW

26
30
1995





7.1

W

34
33
1964





6.4

W

33
37
1986





5.8

W

13
40
1965





6.3

SE

15
44
1965





7.4

W

14
46
JAN 1967




(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.