TUCSON, ARIZONA
NORMALS, MEANS, AND EXTREMES

LATITUDE: 32 Deg. 07 Min. N LONGITUDE: 110 Deg. 56 Min. W ELEVATION: FT. GRND 2584 BARO 2589 TIME ZONE: MOUNTAIN WBAN: 23160

(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






55

55



63.9
38.6
51.3

87
1953
16
1949


67.8
41.0
54.4

92
1957
20
1955


72.8
44.6
58.7

99
1988
20
1965


81.2
50.4
65.8

104
1989
27
1945


89.9
58.0
74.0

107
1958
38
1950


99.6
67.9
83.8

117
1990
47
1955


99.4
73.6
86.6

114
1995
59
1992


96.8
72.1
84.5

112
1993
61
1956


93.3
67.5
80.4

107
1990
44
1965


84.3
56.6
70.4

102
1993
26
1971


72.7
45.6
59.2

90
1988
24
1979


64.3
39.8
52.0

84
1954
16
1974


82.2
54.6
68.4

117
JUN 1990
16
DEC 1974
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




425
0

302
5

229
33

97
121

7
286

0
564

0
670

0
605

0
462

27
194

188
14

403
0

1678
2954
% OF POSSIBLE SUNSHINE
48
80
82
86
92
93
93
78
80
87
88
85
79
85
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

54


55
55
55

55

55
55

55


55
55

55
55

4.7


13.6
7.1
10.3

4.6

0.1
0.4

0.3


0.0
0.0

6.1
0.0

4.6


12.7
6.5
9.0

3.8

0.1
0.3

0.2


0.*
0.0

3.9
0.0

4.5


14.6
7.0
9.4

4.3

0.1
0.5

0.*


0.5
0.0

1.1
0.0

3.5


17.1
7.4
5.5

2.0

0.*
0.7

0.0


4.8
0.0

0.*
0.0

2.9


19.8
6.9
4.3

1.6

0.0
1.5

0.0


17.7
0.0

0.0
0.0

2.3


21.4
6.0
2.6

1.7

0.0
2.6

0.0


28.3
0.0

0.0
0.0

5.1


10.4
12.1
8.5

10.1

0.0
13.4

0.0


29.4
0.0

0.0
0.0

4.6


12.1
12.3
6.6

9.4

0.0
13.5

0.0


28.6
0.0

0.0
0.0

3.0


19.1
7.0
3.9

4.6

0.0
5.5

0.*


24.0
0.0

0.0
0.0

2.9


19.9
6.4
4.7

3.3

0.0
1.9

0.0


9.2
0.0

0.*
0.0

3.5


17.6
6.1
6.3

3.0

0.*
0.5

0.2


0.*
0.0

1.5
0.0

4.5


14.8
6.1
10.1

4.7

0.1
0.3

0.4


0.0
0.0

4.9
0.0

3.8


192.9
91.1
81.2

53.2

0.5
41.2

1.0


142.5
0.0

17.5
0.0
AV. STATION PRES. (mb)
23
927.8
927.1
925.0
923.9
922.8
922.8
924.7
924.9
924.4
925.6
927.0
927.9
925.3
RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22

55
55
55
55

63
41
33
57

59
35
27
50

54
30
23
43

42
21
16
31

35
17
13
25

32
16
13
23

56
32
27
46

65
38
33
53

55
32
26
44

52
30
25
43

55
33
28
48

62
40
35
57

53
30
25
43
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



55

55

55


55

54



0.87
4.81
1993
T
1970
1.46
1993

4.7
1987
4.3
1987


0.70
2.90
1980
0.00
1972
1.49
1942

3.9
1965
3.9
1965


0.72
2.26
1952
0.00
1956
1.19
1952

5.7
1964
5.7
1964


0.30
1.66
1951
0.00
1972
0.91
1988

2.0
1976
2.0
1976


0.18
1.11
1992
0.00
1974
0.89
1943

T
1992
T
1992


0.20
1.46
1954
0.00
1983
1.27
1954

0.0

0.0



2.37
6.17
1981
0.04
1995
3.93
1958

T
1995
T
1995


2.19
7.93
1955
0.23
1976
2.48
1961

T
1995
T
1995


1.67
5.11
1964
0.00
1953
3.05
1964

T
1990
T
1990


1.06
4.98
1983
0.00
1982
3.58
1983

T
1991
T
1991


0.67
1.90
1952
0.00
1980
1.86
1968

6.4
1958
6.4
1958


1.07
5.02
1965
0.00
1981
2.12
1994

6.8
1971
6.8
1971


12.00
7.93
AUG 1955
0.00
JUN 1983
3.93
JUL 1958

6.9
DEC 1971
6.8
DEC 1971
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

50




47
47


12
12

7.9

SE


E
40
1962

SW
55

8.1

SE


E
59
1952

E
48

8.6

SE


SE
41
1955

SE
53

8.9

SE


SW
46
1986

SW
55

8.8

SE


SE
43
1984

SE
55

8.7

SSE


SE
50
1961

SW
47

8.4

SE


SE
71
1971

SE
66

7.9

SE


NE
54
1969

NW
76

8.3

SE


SE
54
1960

SE
71

8.2

SE


SE
47
1948

S
49

8.1

SE


E
55
1951

E
46

7.8

SE


W
44
1949

W
47

8.3

SE


SE
71
JUL 1971

NW
76
(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.