FLAGSTAFF, ARIZONA
NORMALS, MEANS, AND EXTREMES

LATITUDE: 35 Deg. 08 Min. N LONGITUDE: 111 Deg. 40 Min. W ELEVATION: FT. GRND 7006 BARO 6997 TIME ZONE: MOUNTAIN WBAN: 03103

(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






45

45



42.2
15.2
28.7

66
1971
-22
1971


45.3
17.7
31.5

71
1986
-23
1985


4.2
21.3
35.3

73
1988
-16
1966


57.8
26.7
42.3

80
1992
-2
1975


67.4
33.3
50.4

87
1974
14
1975


78.2
41.4
59.8

96
1970
22
1955


81.9
50.5
66.3

97
1973
32
1955


79.3
48.9
64.1

92
1978
24
1968


73.2
41.2
57.3

90
1950
23
1971


63.4
31.0
47.2

85
1980
-2
1971


51.1
22.4
36.8

74
1977
-13
1958


43.3
15.8
29.6

68
1950
-23
1990


61.0
30.5
45.8

97
JUL 1973
-23
DEC 1990
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




1125
0

938
0

921
0

681
0

453
0

187
31

29
70

65
38

237
6

552
0

846
0

1097
0

7131
145
% OF POSSIBLE SUNSHINE
15
77
73
76
82
88
86
75
76
81
79
75
73
78
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

43


43
43
43

45

44
30

30


45
45

45
45

5.2


12.4
6.3
12.3

7.6

4.4
0.*

1.8


0.0
4.4

30.4
3.2

5.3


10.7
6.0
11.5

7.0

4.1
0.3

1.8


0.0
2.4

27.7
1.4

5.3


11.6
7.8
11.6

8.5

5.0
0.6

1.6


0.0
1.6

29.9
0.6

4.7


12.4
8.8
8.7

5.6

2.4
1.3

1.2


0.0
0.2

24.7
0.*

4.1


15.2
9.3
6.5

4.6

0.5
2.6

0.2


0.0
0.0

13.6
0.0

3.0


18.5
7.7
3.9

2.8

0.0
3.7

0.*


1.3
0.0

2.9
0.0

5,3


9.1
13.1
8.8

11.5

0.0
16.4

0.2


1.5
0.0

0.1
0.0

5.1


9.8
13.1
8.1

11.6

0.0
15.6

0.3


0.3
0.0

0.1
0.0

3,7


15.7
9.6
4.7

6.4

0.*
6.7

0.5


0.*
0.0

2.8
0.0

3.6


17.1
7.0
6.9

4.9

0.5
2.2

0.9


0.0
0.1

18.2
0.*

4.2


15.4
6.6
8.0

5.3

2.1
0.6

1.2


0.0
1.2

27.9
0.4

4.8


13.9
6.5
10.7

6.5

3.6
0.2

1.9


0.0
4.4

30.2
2.2

4.5


161.8
101.7
101.6

82.3

22.6
50.1

11.5


3.2
14.2

208.4
7.8
AV. STATION PRES. (mb)
5
786.7
786.9
783.0
784.8
786.4
789.2
791.7
791.7
790.7
789.2
787.7
787.5
788.0
RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22

37
39
31
25

74
53
50
67

74
51
45
65

72
45
41
63

66
35
31
54

64
29
27
49

55
23
21
40

68
34
38
59

76
40
44
69

73
37
37
65

71
38
36
64

71
45
43
64

73
51
52
72

70
40
39
61
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



45

45

45


44

44



2.04
9.55
1993
0.00
1972
2.71
1993

63.4
1980
23.1
1980


2.09
10.05
1993
T
1967
4.48
1993

45.5
1990
23.1
1987


2.55
6.75
1970
T
1972
2.96
1970

79.4
1991
26.3
1970


1.48
5.62
1965
T
1991
1.79
1985

58.3
1965
17.2
1977


0.72
4.14
1992
T
1974
1.11
1965

8.2
1975
6.6
1965


0.40
2.92
1955
0.00
1971
2.79
1956

T
1993
T
1993


2.78
6.62
1986
T
1993
2.55
1964

T
1992
T
1992


2.75
8.06
1986
0.26
1962
3.04
1986

0.3
1992
0.3
1992


2.03
6.75
1983
T
1992
3.43
1965

2.0
1965
2.0
1965


1.61
9.86
1972
T
1952
2.73
1972

24.7
1971
13.5
1974


1.95
6.64
1985
T
1989
3.69
1978

40.7
1985
19.6
1991


2.40
7.30
1967
T
1958
3.11
1951

86.0
1967
27.3
1967


22.80
10.05
FEB 1993
0.00
JAN 1972
4.48
FEB 1993

86.0
DEC 1967
27.3
DEC 1967
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

27



11
11






6.6

NE

SW
38
1975





6.6

S


34
1980





7.1

SSW

SW
37
1974





7.4

SSW

SW
40
1974





7.1

SSW

SW
46
1975





6.9

SSW

SW
35
1984





5.5

SSW

SW
39
1976





5.0

S

NW
30
1978





5.6

S

SW
33
1974





5.8

N

W
34
1978





6.8

NNE

NW
39
1978





6.6

NE

SW
38
1982





6.4

SSW

NE
46
MAY 1975




(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.