183
CDUS45 KRIW 210731
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT SUN SEP 21 2025
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..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 20 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
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TEMPERATURE (F)
YESTERDAY
MAXIMUM 72 3:21 PM 81 1966 69 3 74
MINIMUM 54 11:55 PM 19 1965 42 12 39
AVERAGE 63 56 7
PRECIPITATION (IN)
YESTERDAY 0.01 0.19 1989 0.03 -0.02 0.00
MONTH TO DATE 0.14 0.49 -0.35 0.39
SINCE SEP 1 0.14 0.49 -0.35 0.39
SINCE JAN 1 3.08 5.73 -2.65 4.62
DEGREE DAYS
HEATING
YESTERDAY 2 10 -8 8
MONTH TO DATE 81 124 -43 89
SINCE SEP 1 81 124 -43 89
SINCE JUL 1 99 183 -84 120
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 19 8 11 32
SINCE SEP 1 19 8 11 32
SINCE JAN 1 441 317 124 439
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WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 11.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 67 12:00 PM
LOWEST 29 3:00 PM
AVERAGE 48
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 82 1967
MINIMUM TEMPERATURE (F) 42 22 1995
SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE 7:03 AM MDT SUNSET 7:14 PM MDT
SEPTEMBER 22 2025.....SUNRISE 7:04 AM MDT SUNSET 7:13 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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