GRAND JUNCTION, COLORADO
NORMALS, MEANS, AND EXTREMES

LATITUDE: 39 Deg. 07 Min. N LONGITUDE: 108 Deg. 32 Min. W ELEVATION: FT. GRND 4824 BARO 4828 TIME ZONE: MOUNTAIN WBAN: 23066

(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






49

49



35.5
14.5
25.0

60
1971
-23
1963


45.4
23.5
34.5

68
1986
-18
1989


55.6
31.3
43.4

81
1971
5
1948


65.8
38.5
52.2

89
1992
11
1975


76.0
47.9
62.0

95
1956
26
1970


87.7
57.1
72.4

105
1990
34
1976


93.6
63.9
78.8

105
1976
44
1993


90.5
62.2
76.4

103
1995
43
1968


81.1
52.8
67.0

100
1995
29
1978


67.7
41.6
54.7

88
1963
18
1993


51.4
29.4
40.4

75
1977
-2
1976


38.7
18.7
28.7

64
1980
-17
1990


65.8
40.1
53.0

105
JUN 1990
-23
JAN 1963
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




1240
0

854
0

670
0

389
0

132
39

13
235

0
428

0
353

55
115

332
13

738
0

1125
0

5548
1183
% OF POSSIBLE SUNSHINE
49
61
65
65
70
73
81
79
77
79
74
63
6.1
71
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

49


49
49
49

49

49
49

49


32
32

32
32

6.1


9.2
7.0
14.8

7.0

2.5
0.1

2.8


0.0
11.3

30.2
3.6

6.2


7.6
7.4
13.2

6.1

1.2
0.3

1.8


0.0
2.2

24.8
0.7

6.2


8.0
8.5
14.5

7.8

1.3
0.8

0.6


0.0
0.2

16.2
0.0

6.0


7.9
9.4
12.7

6.7

0.3
2.1

0.1


0.0
0.0

6.4
0.0

5.5


9.6
10.7
10.7

6.6

0.*
4.8

0.*


1.2
0.0

0.4
0.0

4.0


14.9
9.4
5.7

4.1

0.0
4.8

0.0


14.0
0.0

0.0
0.0

4.2


14.0
11.4
5.6

5.1

0.0
7.6

0.0


24.5
0.0

0.0
0.0

4.4


13.4
11.4
6.2

6.7

0.0
8.0

0.0


19.7
0.0

0.0
0.0

3.7


16.3
8.3
5.4

5.8

0..
5.3

0.0


4.3
0.0

0.1
0.0

4.3


15.0
7.8
8.2

5.5

0.2
1.5

0.1


0.0
0.0

3.2
0.0

5.4


10.6
7.5
11.8

5.7

0.9
0.4

0.8


0.0
0.7

20.9
0.*

5.8


9.8
7.8
13.4

6.1

2.0
0.1

2.0


0.0
6.6

29.5
1.1

5.1


136.4
106.5
122.3

73.1

8.5
35.6

8.2


63.7
21.0

131.8
5.3
AV. STATION PRES. (mb)
23
855.1
853.5
849.7
849.7
849.6
850.9
853.2
853.7
853.6
854.2
853.9
855.1
852.7
RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22

32
32
32
32

78
65
63
77

73
54
48
68

64
43
36
56

57
34
28
47

54
31
26
43

45
24
19
33

48
29
22
37

51
32
24
40

52
33
25
41

58
38
33
51

70
50
47
65

77
62
60
74

61
41
36
53
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



49

49

49


49

49



0.56
2.46
1957
T
1961
0.71
1989

33.7
1957
9.1
1957


0.48
1.56
1948
T
1972
0.69
1989

18.4
1948
9.0
1989


0.90
2.02
1.79
0.02
1972
1.15
1993

14.9
1948
6.1
1948


0.75
1.95
1965
0.06
1958
1.33
1965

14.3
1975
8.9
1975


0.87
2.04
1995
T
1970
1.13
1983

5.0
1979
5.0
1979


0.50
2.07
1969
T
1980
1.57
1969

0.0

0.0



0.65
1.9Z
1983
0.01
1994
1.42
1974

0.0

0.0



0.81
3.48
1957
0.04
1956
1.21
1953

T
1993
T
1993


0.82
2.81
1982
T
1953
1.35
1965

3.1
1965
3.1
1965


0.98
3.45
1972
0.00
1952
1.24
1957

6.1
1975
6.1
1975


0.71
2.00
1983
T
1.89
0.83
1983

12.1
1964
8.4
1954


0.61
1.89
1951
0.01
1976
1.16
1951

19.0
1983
6.0
1967


8.64
3.48
AUG 1957
0.00
OCT 1952
1.57
JUN 1969

33.7
JAN 1957
9.1
JAN 1957
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

49



16



12
12


5.7

ESE

18
35
1982

SW
41
1993

6.7

ESE

24
38
1995

SW
59
1995

8.4

ESE

24
37
1994

SW
53
1994

9.4

ESE

26
46
1995

S
78
1985

9.6

ESE

20
46
1989

W
62
1989

9.8

ESE

27
53
1981

S
66
1991

9.4

ESE

08
40
1988

SW
64
1993

9.1

ESE

25
37
1988

S
74
1984

9.0

ESE

28
38
1992

W
64
1992

7.9

ESE

32
35
1990

W
54
1985

6.8

ESE

31
39
1982

W
49
1984

6.0

ESE

26
35
1994

W
45
1994

8.1

FSE

27
53
JUN 1981

S
78
APR 1985
(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.