318
CDUS45 KRIW 270731
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT SAT SEP 27 2025
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 26 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
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 75 3:47 PM 83 2015 66 9 82
MINIMUM 44 6:44 AM 24 1996 40 4 52
AVERAGE 60 53 7
PRECIPITATION (IN)
YESTERDAY 0.00 0.58 1959 0.03 -0.03 0.00
MONTH TO DATE 0.49 0.67 -0.18 0.39
SINCE SEP 1 0.49 0.67 -0.18 0.39
SINCE JAN 1 3.43 5.91 -2.48 4.62
DEGREE DAYS
HEATING
YESTERDAY 5 12 -7 0
MONTH TO DATE 140 190 -50 123
SINCE SEP 1 140 190 -50 123
SINCE JUL 1 158 249 -91 154
COOLING
YESTERDAY 0 0 0 2
MONTH TO DATE 19 8 11 34
SINCE SEP 1 19 8 11 34
SINCE JAN 1 441 317 124 441
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WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 6.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 59 6:00 AM
LOWEST 25 3:00 PM
AVERAGE 42
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 82 2001
2015
2024
MINIMUM TEMPERATURE (F) 40 18 1996
SUNRISE AND SUNSET
SEPTEMBER 27 2025.....SUNRISE 7:09 AM MDT SUNSET 7:04 PM MDT
SEPTEMBER 28 2025.....SUNRISE 7:10 AM MDT SUNSET 7:02 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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