Casper Weather in 1991

Historical record of Casper, Wyoming weather for the year 1991 based on NOAA data.
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1991 Casper Weather Extremes
Highest temperature 99 °F July 14
Lowest temperature -18 °F January 29
Highest daily low 63 °F July 21
Lowest daily high 11 °F November 2
Most daily precipitation 1.5 inches May 15
Most daily snow 5.3 inches November 14
Total annual precipitation 12.4 inches -
Total annual snow 66.6 inches -
Highest Temperatures in Casper in 1991
Rank Temperature Date
1 99 °F Jul 14
2 97 °F Jul 31
2 97 °F Jul 6
4 96 °F Aug 11
4 96 °F Jul 29
6 95 °F Aug 26
6 95 °F Jul 16
6 95 °F Jul 15
9 94 °F Aug 25
9 94 °F Aug 22
9 94 °F Jul 4
9 94 °F Jun 29
Lowest Temperatures in Casper in 1991
Rank Temperature Date
1 -18 °F January 29
2 -14 °F November 2
3 -9 °F January 25
4 -7 °F January 26
5 -5 °F January 6
6 -4 °F November 1
7 -3 °F December 1
7 -3 °F November 30
9 -1 °F January 28
9 -1 °F January 20
9 -1 °F January 5
9 -1 °F January 4
9 -1 °F January 3
January 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
41 25 0.00 0.0
30 2 0.00 0.1
18 -1 0.00 0.0
35 -1 0.00 0.0
24 -1 0.00 0.0
37 -5 0.00 0.0
36 24 0.00 0.0
38 18 0.00 0.0
40 18 0.00 0.0
38 17 0.00 0.0
39 17 0.00 0.0
44 28 0.00 0.0
46 31 0.00 0.0
43 23 0.00 0.0
42 24 0.10 1.7
32 16 0.03 0.4
32 16 0.00 0.0
39 26 0.00 0.0
33 9 0.22 4.0
22 -1 0.00 0.0
22 1 0.00 0.0
29 14 0.00 0.0
22 2 0.04 1.0
29 6 0.04 0.8
16 -9 0.00 0.0
28 -7 0.00 0.0
32 7 0.00 0.0
25 -1 0.11 2.2
17 -18 0.00 0.0
32 13 0.00 0.0
41 25 0.00 0.0
February 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
47 28 0.00 0.0
47 28 0.00 0.0
47 28 0.00 0.0
44 26 0.00 0.0
51 30 0.00 0.0
45 23 0.00 0.0
52 23 0.00 0.0
52 25 0.00 0.0
52 25 0.00 0.0
53 23 0.00 0.0
55 33 0.00 0.0
54 33 0.00 0.0
45 22 0.00 0.0
39 21 0.00 0.0
59 29 0.00 0.0
52 35 0.00 0.0
36 27 0.19 2.2
35 14 0.11 2.4
40 13 0.00 0.0
50 34 0.00 0.0
53 29 0.00 0.0
53 25 0.00 0.0
39 21 0.08 1.3
30 18 0.00 0.0
39 16 0.00 0.0
44 17 0.00 0.0
42 17 0.00 0.0
50 18 0.00 0.0
March 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
27 16 0.02 0.3
52 16 0.00 0.0
52 35 0.00 0.0
60 36 0.00 0.0
51 22 0.11 1.0
31 17 0.07 1.5
38 15 0.00 0.0
40 20 0.00 0.0
53 23 0.00 0.0
57 34 0.00 0.0
55 25 0.03 0.3
41 16 0.00 0.0
46 19 0.00 0.0
47 14 0.00 0.0
46 18 0.02 0.0
51 22 0.00 0.0
52 22 0.00 0.0
56 25 0.00 0.0
65 22 0.00 0.0
51 32 0.00 0.0
51 28 0.00 0.0
46 28 0.09 0.5
55 25 0.00 0.0
59 33 0.00 0.0
62 27 0.00 0.0
49 24 0.00 0.0
48 17 0.00 0.0
54 21 0.00 0.0
37 19 0.11 2.3
47 20 0.00 0.0
60 31 0.00 0.0
April 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
66 34 0.00 0.0
69 33 0.00 0.0
63 38 0.00 0.0
71 34 0.00 0.0
76 44 0.00 0.0
77 44 0.00 0.0
45 32 0.13 0.0
47 25 0.00 0.0
53 21 0.00 0.0
50 27 0.17 3.1
34 23 0.28 4.8
27 20 0.21 3.6
33 21 0.04 0.4
43 20 0.01 0.2
53 22 0.00 0.0
54 32 0.00 0.0
57 32 0.04 0.0
45 34 0.13 0.2
50 32 0.00 0.0
58 30 0.00 0.0
52 35 0.06 0.0
61 31 0.00 0.0
62 29 0.00 0.0
67 36 0.00 0.0
62 36 0.06 0.0
38 31 0.28 2.8
49 28 0.00 0.0
51 30 0.00 0.0
51 27 0.01 0.0
49 26 0.00 0.0
May 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
56 22 0.00 0.0
44 30 0.02 0.2
44 29 0.00 0.0
49 30 0.02 0.2
58 27 0.00 0.0
62 30 0.04 0.0
62 41 0.14 0.0
80 39 0.00 0.0
69 41 0.00 0.0
53 37 0.15 0.0
54 43 0.27 0.0
60 40 0.00 0.0
72 42 0.00 0.0
74 36 0.09 0.0
52 42 1.52 0.0
47 40 0.80 0.0
61 44 0.02 0.0
77 46 0.00 0.0
80 50 0.00 0.0
82 50 0.01 0.0
80 44 0.00 0.0
60 46 0.09 0.0
70 45 0.48 0.0
67 46 0.01 0.0
77 41 0.00 0.0
65 42 0.23 0.0
58 41 0.55 0.0
68 35 0.00 0.0
72 40 0.00 0.0
71 43 0.00 0.0
62 44 0.31 0.0
June 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
65 50 0.69 0.0
69 49 0.36 0.0
70 50 0.00 0.0
73 50 0.00 0.0
76 46 0.11 0.0
70 49 0.03 0.0
74 49 0.08 0.0
79 51 0.00 0.0
78 47 0.00 0.0
80 48 0.00 0.0
86 52 0.00 0.0
85 51 0.00 0.0
82 58 0.03 0.0
74 47 0.05 0.0
76 41 0.00 0.0
84 49 0.00 0.0
87 46 0.00 0.0
78 48 0.04 0.0
91 51 0.00 0.0
84 54 0.00 0.0
78 51 0.00 0.0
83 49 0.16 0.0
86 44 0.00 0.0
91 53 0.00 0.0
88 51 0.00 0.0
87 53 0.00 0.0
83 44 0.00 0.0
84 50 0.08 0.0
94 51 0.04 0.0
80 49 0.03 0.0
July 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
81 45 0.00 0.0
83 44 0.00 0.0
85 48 0.00 0.0
94 52 0.00 0.0
93 55 0.00 0.0
97 58 0.00 0.0
77 53 0.00 0.0
87 51 0.01 0.0
81 56 0.00 0.0
86 53 0.00 0.0
88 50 0.00 0.0
85 53 0.00 0.0
93 52 0.00 0.0
99 61 0.00 0.0
95 60 0.00 0.0
95 63 0.00 0.0
93 63 0.00 0.0
87 58 0.01 0.0
92 54 0.00 0.0
91 62 0.00 0.0
93 63 0.00 0.0
75 60 0.00 0.0
80 55 0.04 0.0
74 52 0.00 0.0
82 48 0.03 0.0
86 54 0.00 0.0
89 52 0.00 0.0
92 53 0.00 0.0
96 54 0.00 0.0
92 62 0.00 0.0
97 53 0.00 0.0
August 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
89 61 0.01 0.0
81 53 0.00 0.0
81 54 0.00 0.0
86 54 0.02 0.0
88 54 0.00 0.0
86 53 0.00 0.0
89 58 0.00 0.0
91 52 0.00 0.0
91 52 0.00 0.0
92 52 0.00 0.0
96 54 0.00 0.0
82 59 0.00 0.0
89 52 0.00 0.0
93 62 0.00 0.0
83 54 0.00 0.0
86 49 0.00 0.0
83 53 0.00 0.0
86 49 0.00 0.0
88 54 0.45 0.0
85 61 0.00 0.0
93 57 0.00 0.0
94 59 0.00 0.0
93 53 0.00 0.0
93 60 0.00 0.0
94 62 0.00 0.0
95 58 0.00 0.0
93 59 0.13 0.0
85 59 0.00 0.0
88 54 0.00 0.0
91 45 0.00 0.0
92 53 0.00 0.0
September 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
92 51 0.00 0.0
89 57 0.00 0.0
81 53 0.00 0.0
86 49 0.00 0.0
84 50 0.00 0.0
88 52 0.01 0.0
81 57 0.00 0.0
74 55 0.32 0.0
73 53 0.00 0.0
77 52 0.00 0.0
76 52 0.00 0.0
78 51 0.02 0.0
74 47 0.00 0.0
66 36 0.03 0.0
61 35 0.00 0.0
72 36 0.00 0.0
53 39 0.01 0.0
63 31 0.00 0.0
72 26 0.00 0.0
82 38 0.00 0.0
82 40 0.00 0.0
59 36 0.01 0.0
59 32 0.00 0.0
72 30 0.00 0.0
74 37 0.00 0.0
84 35 0.00 0.0
79 36 0.00 0.0
85 38 0.00 0.0
72 52 0.00 0.0
76 45 0.00 0.0
October 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
83 50 0.00 0.0
74 46 0.00 0.0
66 32 0.08 0.6
45 31 0.04 0.4
57 27 0.00 0.0
74 28 0.00 0.0
81 44 0.00 0.0
75 40 0.00 0.0
77 32 0.00 0.0
82 38 0.00 0.0
81 41 0.00 0.0
81 47 0.00 0.0
61 32 0.00 0.0
70 31 0.00 0.0
80 42 0.00 0.0
83 50 0.00 0.0
73 33 0.00 0.0
58 33 0.00 0.0
60 32 0.00 0.0
67 24 0.00 0.0
70 33 0.00 0.0
64 28 0.00 0.0
47 27 0.08 0.0
47 21 0.00 0.0
50 30 0.00 0.0
62 38 0.00 0.0
56 14 0.14 1.6
16 7 0.16 3.8
20 4 0.01 0.2
15 1 0.01 0.4
32 10 0.03 0.6
November 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
19 -4 0.10 1.9
11 -14 0.00 0.1
27 7 0.00 0.0
42 20 0.00 0.0
47 31 0.00 0.0
44 22 0.11 0.1
48 27 0.00 0.0
58 37 0.00 0.0
53 33 0.00 0.0
53 28 0.00 0.0
52 25 0.00 0.0
61 40 0.00 0.0
63 28 0.00 0.0
35 30 0.32 5.3
33 22 0.01 0.2
38 18 0.00 0.0
45 26 0.00 0.0
42 27 0.10 2.0
36 17 0.00 0.0
43 31 0.00 0.0
44 24 0.00 0.0
29 8 0.11 2.3
29 8 0.00 0.0
40 25 0.00 0.0
43 28 0.00 0.0
45 31 0.06 0.6
46 25 0.09 0.9
30 16 0.18 2.0
26 12 0.10 1.4
14 -3 0.00 0.0
December 1991 Casper Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
20 -3 0.00 0.0
28 10 0.10 1.5
32 11 0.00 0.0
38 29 0.00 0.0
41 26 0.00 0.0
46 35 0.00 0.0
45 31 0.03 0.3
36 17 0.09 1.4
37 16 0.00 0.0
38 17 0.00 0.0
37 18 0.00 0.0
36 21 0.00 0.0
33 2 0.05 0.7
37 10 0.00 0.0
38 23 0.00 0.0
43 15 0.00 0.0
43 9 0.00 0.0
45 14 0.00 0.0
40 30 0.05 0.5
35 25 0.02 0.3
40 23 0.00 0.0
37 20 0.00 0.0
35 21 0.00 0.0
37 20 0.00 0.0
36 17 0.00 0.0
35 15 0.00 0.0
37 20 0.00 0.0
42 25 0.00 0.0
37 24 0.00 0.0
37 19 0.00 0.0
33 15 0.00 0.0
Weather Station Details
Years Station Coordinates
1949–2024 Casper-Natrona County International Airport location
1900–1948 Casper 2 E location