193
CXUS55 KRIW 291748
CLARKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1034 AM MST THU JAN 29 2026
..PRELIMINARY ANNUAL CLIMATE SUMMARY FOR ROCK SPRINGS FOR 2025
...1ST WARMEST YEAR AT 47.4 DEGREES (3.7 DEGREES ABOVE NORMAL
(PREVIOUSLY: 2012 / 47.3F)
...6TH HOTTEST SUMMER AT 68.3 DEGREES.
...10TH DRIEST YEAR WITH 4.51 INCHES (59.7% OF NORMAL)
...HOT AND COLD MONTHS: 9TH WARMEST JUN, 2ND WARMEST NOVEMBER, AND
1ST WARMEST DECEMBER.
...WET AND DRY MONTHS: 8TH DRIEST JAN, 5TH WETTEST MAR, 2ND DRIEST
JUNE (T 1027), AND 9TH DRIEST DECEMBER.
...HOT DAYS: FEB 2ND 49F, FEB 3RD 54F, FEB 28TH 55F, MAR 26TH 69F,
MAR 27TH 71F, APR 11TH 76F, APR 12TH 72F, MAY 10TH 79F, JUN 1ST 86F,
JUN 19TH 93F, AUG 19TH 91F, AUG 20TH 95F, NOV 2ND 65F; NOV 5TH 66F
(T WITH HIGHEST MONTHLY TEMP), NOV 13TH 62F; NOV 14TH 61F (T 1990,
2016); DEC 11TH 53F; DEC 12TH 51 (T 2004); DEC 13TH 51F; DEC 16TH 51
(T 1980); DEC 19TH 54F, DEC 21ST 58F, DEC 22ND 59F; DEC 23RD 56F,
DEC 24TH 51F, AND DEC 25TH 55F.
...COLD DAYS: JUN 23RD 33F.
...WET DAYS: AUG 27TH 0.20”.
...PEAK WIND: JULY 15TH 250/66 MPH. DECEMBER 17TH 260/79 MPH.
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE YEAR OF 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 98 07/13/2002
LOW -37 01/12/1963
HIGHEST 95 MM
LOWEST -11 MM
AVG. MAXIMUM 59.9 4.9
AVG. MINIMUM 34.8 2.4
MEAN 47.4
PRECIPITATION (INCHES)
RECORD
MAXIMUM 14.54 1965
MINIMUM 2.91 2012
TOTALS 4.51 7.55 -3.04
DEGREE DAYS
HEATING TOTAL 6666
COOLING TOTAL 442
..........................................................
WIND (MPH)
HIGHEST WIND SPEED/DIRECTION 61/260 DATE 12/17
HIGHEST GUST SPEED/DIRECTION 79/260 DATE 12/17
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 33 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 12
LIGHT RAIN 96 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 6 SNOW 16
LIGHT SNOW 62 SLEET 0
FOG 73 FOG W/VIS <= 1/4 MILE 13
HAZE 21
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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