BILLINGS, MONTANA
NORMALS, MEANS, AND EXTREMES

LATITUDE: 45 48' N LONGITUDE: 108 32' W ELEVATION: FT. GRND 3567 BARO 3583 TIME ZONE: MOUNTAIN WBAN: 24033

(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






61

61



31.8
13.7
22.8

68
1953
-30
1937


38.6
19.4
29.0

72
1961
-38
1936


45.8
25.2
35.5

79
1986
-19
1989


57.1
34.0
45.6

92
1939
-5
1936


66.7
43.3
55.0

96
1936
14
1954


77.6
52.0
64.8

105
1984
32
1969


86.7
58.3
72.5

106
1937
41
1972


84.7
56.7
70.7

105
1961
35
1992


71.6
46.5
59.1

103
1983
22
1984


60.6
37.5
49.1

90
1992
-7
1991


44.5
25.6
35.1

77
1993
-22
1959


34.4
16.5
25.5

69
1980
-32
1983


58.3
35.7
47.1

106
JUL 1937
-38
FEB 1936
NORMAL DEGREE DAYS
Heating (base 65 Deg. F)
Cooling (base 65 Deg. F)




1308
0

1008
0

915
0

582
0

316
6

119
113

12
244

42
219

242
65

498
5

897
0

1225
0

7164
652
% OF POSSIBLE SUNSHINE
56
47
53
61
60
61
64
76
75
68
61
46
45
60
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

56


56
56
56

61

53
56

48


36
36

36
36

7.1


5.5
7.7
17.8

7.6

3.2
0.*

1.5


0.0
13.4

27.4
7.7

7.1


4.2
7.9
16.1

7.3

2.5
0.*

2.1


0.0
8.0

23.5
3.4

7.2


4.3
8.6
18.0

9.1

3.3
0.1

2.1


0.0
4.7

22.8
1.3

7.2


4.2
8.6
17.2

9.6

2.3
1.2

2.6


0.*
0.7

12.7
0.0

6.6


5.5
10.5
15.0

11.3

0.5
4.4

1.3


0.4
0.0

1.6
0.0

5.9


7.1
11.8
11.1

11.2

0.*
7.4

0.7


4.1
0.0

0.1
0.0

4.3


13.4
11.8
5.8

7.4

0.0
7.5

0.4


11.8
0.0

0.0
0.0

4.4


13.5
10.9
6.5

6.4

0.0
5.6

0.3


10.7
0.0

0.0
0.0

5.2


10.4
9.3
10.3

7.0

0.4
1.9

1.0


1.9
0.*

1.3
0.0

5.8


9.1
9.0
12.9

6.3

1.2
0.2

1.9


0.1
0.8

8.2
0.*

6.9


5.7
7.6
16.6

6.1

2.2
0.0

2.1


0.0
5.1

21.9
1.2

6.8


6.1
8.1
16.8

6.9

2.7
0.*

1.6


0.0
11.2

27.6
4.3

6.2


89.2
111.9
164.1

96.3

18.2
28.3

17.6


28.9
44.0

147.1
17.9
AV. STATION PRES. (mb)
23
890.8
890.9
888.6
889.4
889.1
889.9
891.8
891.9
892.5
892.1
890.6
890.7
890.7
RELATIVE HUMIDITY (%)
Hour 04
Hour 10 (Local Time)
Hour 16
Hour 22

36
36
36
36

64
60
56
63

66
57
51
62

68
54
46
62

68
49
41
59

70
48
42
60

71
46
39
59

64
40
32
.50

61
39
30
47

65
47
37
54

63
49
42
56

65
57
53
62

64
59
56
62

66
50
44
58
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



61

61

61


61

57



0.90
2.35
1972
0.04
1941
1.41
1972

27.7
1963
16.6
1972


0.64
1.77
1978
0.05
1977
0.65
1986

22.4
1978
9.0
1944


1.16
2.70
1954
0.13
1936
1.01
1973

27.6
1935
10.5
1964


1.74
4.42
1955
0.06
1962
3.19
1978

42.3
1955
23.7
1955


2.57
7.71
1981
0.40
1993
2.83
1952

15.6
1981
15.3
1981


1.99
7.64
1944
0.24
1961
2.78
1937

2.0
1950
2.0
1950


0.94
5.08
1993
0.04
1988
2.32
1993

0.4
1993
0.4
1993


1.01
3.50
1965
0.05
1955
2.47
1965

T
1992
T
1992


1.36
4.99
1941
0.06
1964
2.19
1966

9.3
1984
7.5
1983


1.14
3.80
1971
0.01
1987
1.98
1974

23.1
1949
11.2
1980


0.84
2.34
1978
T
1954
1.37
1959

25.2
1978
15.3
.1959


0.79
2.00
1973
0.05
1957
0.96
1978

28.8
1955
13.7
1978


15.08
7.71
MAY 1981
T
NOV 1954
3.19
APR 1978

42.3
APR 1955
23.7
APR 1955
WIND
Mean Speed (mph)
Prevailing Direction
through 1964
Fastest Mile
-Direction(!!)
-Speed(mph)
-Year
Peak Gust
-Direction(!!)
-Speed(mph)
-Date

56



52
52


12
12


13.0

SW

W
66
1953

NW
59
1986

12.2

SW

W
72
1963

W
62
1988

11.4

SW

NW
61
1956

NW
52
1990

11.4

SW

NW
72
1947

NW
59
1987

10.7

NE

NN
68
1939

NW
60
1988

10.1

SW

NW
79
1968

W
54
1987

9.5

SW

N
73
1947

32
71
1995

9.5

SW

NW
69
1983

NW
69
1986

10.2

SW

NW
61
1949

NW
61
1989

11.0

SW

NW
68
1949

31
64
1995

12.1

SW

NW
63
1948

SW
58
1990

13.0

WSW

NW
66
1953

27
70
1995

11.2

SW

NW
79
JUN 1968

32
71
JUL 1995
(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.