Rock Springs Weather in 1999

Historical record of Rock Springs, Wyoming weather for the year 1999 based on NOAA data.
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1999 Rock Springs Weather Extremes
Highest temperature 88 °F July 27
Lowest temperature 0 °F February 11
Highest daily low 64 °F July 3
Lowest daily high 16 °F February 11
Most daily precipitation 0.9 inches May 26
Most daily snow 8.3 inches April 24
Total annual precipitation 9.5 inches -
Total annual snow 47.8 inches -
Highest Temperatures in Rock Springs in 1999
Rank Temperature Date
1 88 °F Jul 27
1 88 °F Jul 23
1 88 °F Jul 6
1 88 °F Jul 3
1 88 °F Jul 2
6 86 °F Jul 13
6 86 °F Jul 7
6 86 °F Jul 4
9 84 °F Aug 24
9 84 °F Aug 23
9 84 °F Aug 18
9 84 °F Aug 14
9 84 °F Aug 3
9 84 °F Jul 28
9 84 °F Jul 26
9 84 °F Jul 24
9 84 °F Jul 22
Lowest Temperatures in Rock Springs in 1999
Rank Temperature Date
1 0 °F February 11
1 0 °F January 31
1 0 °F January 3
4 3 °F December 11
4 3 °F January 30
4 3 °F January 29
7 5 °F December 14
7 5 °F December 9
9 7 °F November 23
9 7 °F February 13
9 7 °F February 10
9 7 °F January 28
January 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
January 1
31 18 0.00 0.0
January 2
25 10 0.01 0.1
January 3
23 0 0.00 0.0
January 4
33 14 0.00 0.0
January 5
39 26 0.00 0.0
January 6
44 32 0.00 0.0
January 7
41 26 0.00 0.0
January 8
32 14 0.00 0.0
January 9
37 22 0.00 0.0
January 10
42 25 0.00 0.0
January 11
49 33 0.00 0.0
January 12
42 26 0.00 0.0
January 13
38 21 0.00 0.0
January 14
43 19 0.00 0.0
January 15
43 28 0.00 0.0
January 16
43 21 0.02 0.2
January 17
30 18 0.00 0.0
January 18
43 21 0.01 0.1
January 19
37 27 0.03 0.3
January 20
37 25 0.04 0.4
January 21
30 21 0.15 1.5
January 22
27 18 0.01 0.1
January 23
45 16 0.11 1.1
January 24
27 19 0.01 0.1
January 25
28 16 0.00 0.0
January 26
30 18 0.00 0.0
January 27
25 10 0.07 0.7
January 28
21 7 0.00 0.0
January 29
28 3 0.00 0.0
January 30
25 3 0.00 0.0
January 31
25 0 0.00 0.0
February 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
February 1
28 12 0.00 0.0
February 2
28 12 0.00 0.0
February 3
34 21 0.00 0.0
February 4
43 18 0.00 0.0
February 5
36 25 0.00 0.0
February 6
37 21 0.00 0.0
February 7
45 28 0.00 0.0
February 8
34 21 0.06 0.6
February 9
45 21 0.00 0.0
February 10
43 7 0.50 5.0
February 11
16 0 0.00 0.0
February 12
27 9 0.00 0.0
February 13
30 7 0.00 0.0
February 14
37 10 0.00 0.0
February 15
30 18 0.00 0.0
February 16
34 16 0.00 0.0
February 17
34 19 0.10 1.0
February 18
30 14 0.01 0.1
February 19
32 18 0.03 0.3
February 20
28 12 0.00 0.0
February 21
39 18 0.01 0.1
February 22
25 16 0.00 0.0
February 23
37 19 0.00 0.0
February 24
46 27 0.00 0.0
February 25
46 27 0.00 0.0
February 26
30 19 0.00 0.0
February 27
37 14 0.00 0.0
February 28
46 25 0.00 0.0
March 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
March 1
45 28 0.00 0.0
March 2
37 21 0.00 0.0
March 3
54 21 0.00 0.0
March 4
34 18 0.11 2.1
March 5
27 12 0.00 0.0
March 6
37 12 0.00 0.0
March 7
37 27 0.00 0.0
March 8
36 19 0.00 0.0
March 9
45 25 0.01 0.0
March 10
36 19 0.00 0.0
March 11
43 25 0.00 0.0
March 12
37 25 0.00 0.0
March 13
48 21 0.00 0.0
March 14
57 27 0.00 0.0
March 15
57 37 0.00 0.0
March 16
54 32 0.00 0.0
March 17
46 23 0.00 0.0
March 18
52 25 0.00 0.0
March 19
57 27 0.00 0.0
March 20
63 28 0.00 0.0
March 21
48 30 0.00 0.0
March 22
48 28 0.00 0.0
March 23
55 27 0.00 0.0
March 24
57 28 0.00 0.0
March 25
63 30 0.00 0.0
March 26
55 34 0.00 0.0
March 27
36 21 0.01 0.1
March 28
39 18 0.00 0.0
March 29
57 21 0.00 0.0
March 30
61 30 0.00 0.0
March 31
52 23 0.46 4.6
April 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
April 1
25 18 0.18 1.8
April 2
23 16 0.06 0.6
April 3
32 18 0.06 0.6
April 4
37 16 0.00 0.0
April 5
39 21 0.00 0.0
April 6
48 32 0.00 0.0
April 7
54 27 0.00 0.0
April 8
48 30 0.00 0.0
April 9
37 21 0.00 0.0
April 10
39 19 0.00 0.0
April 11
48 25 0.00 0.0
April 12
57 28 0.00 0.0
April 13
59 30 0.00 0.0
April 14
46 19 0.00 0.0
April 15
37 16 0.00 0.0
April 16
46 16 0.00 0.0
April 17
61 21 0.00 0.0
April 18
64 37 0.00 0.0
April 19
66 39 0.00 0.0
April 20
55 36 0.18 0.0
April 21
46 32 0.00 0.0
April 22
36 28 0.53 5.3
April 23
30 27 0.41 3.9
April 24
37 27 0.83 8.3
April 25
37 27 0.10 1.0
April 26
54 34 0.01 0.0
April 27
48 36 0.06 0.0
April 28
63 37 0.00 0.0
April 29
57 37 0.15 0.0
April 30
45 36 0.17 0.0
May 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
May 1
55 32 0.00 0.0
May 2
52 32 0.18 0.0
May 3
43 30 0.26 2.4
May 4
39 27 0.00 0.0
May 5
37 23 0.00 0.0
May 6
57 25 0.00 0.0
May 7
66 34 0.00 0.0
May 8
70 41 0.01 0.0
May 9
48 28 0.09 0.9
May 10
37 23 0.01 0.1
May 11
46 23 0.00 0.0
May 12
57 32 0.21 0.0
May 13
54 32 0.20 0.3
May 14
50 30 0.08 0.8
May 15
48 34 0.00 0.0
May 16
46 27 0.00 0.0
May 17
57 28 0.00 0.0
May 18
70 36 0.00 0.0
May 19
70 45 0.01 0.0
May 20
66 39 0.00 0.0
May 21
70 41 0.00 0.0
May 22
73 41 0.00 0.0
May 23
73 41 0.00 0.0
May 24
70 46 0.44 0.0
May 25
64 45 0.00 0.0
May 26
70 45 0.86 0.0
May 27
66 45 0.00 0.0
May 28
72 48 0.00 0.0
May 29
66 46 0.14 0.0
May 30
70 43 0.00 0.0
May 31
54 41 0.00 0.0
June 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
June 1
66 43 0.00 0.0
June 2
64 39 0.00 0.0
June 3
63 36 0.00 0.0
June 4
68 39 0.02 0.0
June 5
57 36 0.00 0.0
June 6
66 43 0.12 0.0
June 7
70 41 0.01 0.0
June 8
70 43 0.01 0.0
June 9
64 39 0.00 0.0
June 10
59 45 0.01 0.0
June 11
66 39 0.00 0.0
June 12
72 39 0.00 0.0
June 13
72 45 0.00 0.0
June 14
75 46 0.00 0.0
June 15
70 48 0.00 0.0
June 16
73 45 0.05 0.0
June 17
72 48 0.00 0.0
June 18
77 46 0.00 0.0
June 19
81 54 0.06 0.0
June 20
81 52 0.00 0.0
June 21
79 55 0.08 0.0
June 22
73 52 0.00 0.0
June 23
75 46 0.00 0.0
June 24
82 46 0.00 0.0
June 25
81 55 0.00 0.0
June 26
75 46 0.00 0.0
June 27
77 54 0.00 0.0
June 28
77 43 0.00 0.0
June 29
73 48 0.00 0.0
June 30
73 52 0.00 0.0
July 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
July 1
81 48 0.00 0.0
July 2
88 55 0.00 0.0
July 3
88 64 0.00 0.0
July 4
86 63 0.00 0.0
July 5
81 52 0.00 0.0
July 6
88 54 0.00 0.0
July 7
86 61 0.05 0.0
July 8
81 55 0.00 0.0
July 9
79 50 0.00 0.0
July 10
82 52 0.00 0.0
July 11
82 57 0.00 0.0
July 12
82 54 0.00 0.0
July 13
86 59 0.00 0.0
July 14
75 54 0.14 0.0
July 15
75 52 0.00 0.0
July 16
75 46 0.00 0.0
July 17
79 48 0.15 0.0
July 18
81 52 0.00 0.0
July 19
77 54 0.00 0.0
July 20
81 54 0.00 0.0
July 21
82 55 0.00 0.0
July 22
84 55 0.00 0.0
July 23
88 55 0.00 0.0
July 24
84 61 0.16 0.0
July 25
82 52 0.00 0.0
July 26
84 52 0.00 0.0
July 27
88 57 0.00 0.0
July 28
84 59 0.06 0.0
July 29
79 57 0.04 0.0
July 30
79 54 0.00 0.0
July 31
73 55 0.02 0.0
August 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
August 1
79 48 0.00 0.0
August 2
82 54 0.00 0.0
August 3
84 55 0.00 0.0
August 4
75 57 0.06 0.0
August 5
73 54 0.15 0.0
August 6
77 55 0.02 0.0
August 7
79 48 0.01 0.0
August 8
81 55 0.00 0.0
August 9
82 54 0.00 0.0
August 10
81 55 0.00 0.0
August 11
70 48 0.15 0.0
August 12
72 46 0.00 0.0
August 13
81 46 0.00 0.0
August 14
84 61 0.00 0.0
August 15
79 55 0.00 0.0
August 16
82 50 0.00 0.0
August 17
82 52 0.00 0.0
August 18
84 52 0.00 0.0
August 19
79 55 0.00 0.0
August 20
79 54 0.01 0.0
August 21
75 55 0.02 0.0
August 22
82 55 0.00 0.0
August 23
84 59 0.00 0.0
August 24
84 59 0.00 0.0
August 25
81 57 0.00 0.0
August 26
82 57 0.00 0.0
August 27
79 54 0.05 0.0
August 28
81 48 0.00 0.0
August 29
82 54 0.00 0.0
August 30
82 57 0.07 0.0
August 31
73 55 0.00 0.0
September 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
September 1
73 52 0.12 0.0
September 2
61 48 0.23 0.0
September 3
54 39 0.00 0.0
September 4
61 37 0.00 0.0
September 5
70 39 0.00 0.0
September 6
79 43 0.00 0.0
September 7
70 48 0.00 0.0
September 8
72 39 0.00 0.0
September 9
75 45 0.00 0.0
September 10
75 52 0.02 0.0
September 11
72 39 0.00 0.0
September 12
63 34 0.00 0.0
September 13
72 34 0.00 0.0
September 14
68 37 0.00 0.0
September 15
70 41 0.00 0.0
September 16
73 43 0.00 0.0
September 17
73 45 0.00 0.0
September 18
75 43 0.00 0.0
September 19
54 39 0.30 0.0
September 20
57 37 0.00 0.0
September 21
66 36 0.00 0.0
September 22
70 39 0.00 0.0
September 23
72 43 0.00 0.0
September 24
66 48 0.01 0.0
September 25
72 46 0.00 0.0
September 26
52 30 0.00 0.0
September 27
45 25 0.00 0.0
September 28
43 27 0.00 0.0
September 29
64 25 0.00 0.0
September 30
70 39 0.00 0.0
October 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
October 1
63 37 0.00 0.0
October 2
63 28 0.00 0.0
October 3
63 30 0.00 0.0
October 4
70 36 0.00 0.0
October 5
73 36 0.00 0.0
October 6
70 41 0.00 0.0
October 7
64 39 0.00 0.0
October 8
66 37 0.00 0.0
October 9
73 39 0.00 0.0
October 10
75 41 0.00 0.0
October 11
75 45 0.00 0.0
October 12
72 45 0.00 0.0
October 13
70 39 0.00 0.0
October 14
70 45 0.00 0.0
October 15
54 28 0.00 0.0
October 16
34 19 0.00 0.0
October 17
52 21 0.00 0.0
October 18
48 28 0.00 0.0
October 19
54 19 0.00 0.0
October 20
63 34 0.00 0.0
October 21
64 36 0.00 0.0
October 22
64 34 0.00 0.0
October 23
64 28 0.00 0.0
October 24
64 30 0.00 0.0
October 25
64 30 0.00 0.0
October 26
66 37 0.00 0.0
October 27
57 37 0.00 0.0
October 28
57 32 0.05 0.0
October 29
45 28 0.00 0.0
October 30
54 27 0.00 0.0
October 31
63 28 0.00 0.0
November 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
November 1
45 19 0.00 0.0
November 2
52 14 0.00 0.0
November 3
57 30 0.00 0.0
November 4
64 39 0.00 0.0
November 5
64 34 0.00 0.0
November 6
64 28 0.00 0.0
November 7
64 34 0.00 0.0
November 8
63 37 0.00 0.0
November 9
50 32 0.00 0.0
November 10
57 27 0.00 0.0
November 11
57 25 0.00 0.0
November 12
63 27 0.00 0.0
November 13
61 27 0.00 0.0
November 14
59 27 0.00 0.0
November 15
57 23 0.00 0.0
November 16
61 28 0.00 0.0
November 17
61 32 0.00 0.0
November 18
37 23 0.00 0.0
November 19
41 19 0.00 0.0
November 20
43 27 0.00 0.0
November 21
32 19 0.00 0.0
November 22
28 12 0.01 0.1
November 23
27 7 0.00 0.0
November 24
30 9 0.00 0.0
November 25
39 25 0.00 0.0
November 26
54 36 0.00 0.0
November 27
52 30 0.00 0.0
November 28
50 21 0.00 0.0
November 29
52 21 0.00 0.0
November 30
52 28 0.00 0.0
December 1999 Rock Springs Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
December 1
48 23 0.00 0.0
December 2
36 18 0.02 0.3
December 3
28 19 0.01 0.2
December 4
27 9 0.00 0.0
December 5
36 10 0.00 0.0
December 6
37 19 0.00 0.0
December 7
30 16 0.04 0.6
December 8
27 9 0.00 0.0
December 9
25 5 0.00 0.0
December 10
28 10 0.09 0.9
December 11
23 3 0.00 0.0
December 12
32 19 0.00 0.0
December 13
30 12 0.08 1.2
December 14
19 5 0.00 0.0
December 15
27 10 0.00 0.0
December 16
36 25 0.00 0.0
December 17
37 25 0.00 0.0
December 18
34 19 0.00 0.0
December 19
30 19 0.00 0.0
December 20
30 18 0.00 0.0
December 21
27 12 0.00 0.0
December 22
32 14 0.00 0.0
December 23
37 18 0.00 0.0
December 24
37 12 0.00 0.0
December 25
39 10 0.00 0.0
December 26
39 18 0.00 0.0
December 27
41 10 0.00 0.0
December 28
43 12 0.00 0.0
December 29
43 19 0.00 0.0
December 30
39 18 0.00 0.0
December 31
39 19 0.00 0.0
Weather Station Details
Years Station Coordinates
1948–2024 Rock Springs Airport location
1898–1947 Rock Springs location