461
CDUS45 KRIW 210732
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT MON SEP 21 2026
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 20 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 64 4:43 PM 81 1966 69 -5 72
MINIMUM 36 6:52 AM 19 1965 42 -6 54
AVERAGE 50 56 -6
PRECIPITATION (IN)
YESTERDAY 0.00 0.19 1989 0.03 -0.03 0.01
MONTH TO DATE 0.29 0.49 -0.20 0.14
SINCE SEP 1 0.29 0.49 -0.20 0.14
SINCE JAN 1 3.34 5.73 -2.39 3.08
DEGREE DAYS
HEATING
YESTERDAY 15 10 5 2
MONTH TO DATE 57 124 -67 81
SINCE SEP 1 57 124 -67 81
SINCE JUL 1 71 183 -112 99
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 21 8 13 19
SINCE SEP 1 21 8 13 19
SINCE JAN 1 558 317 241 441
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 8.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 7:00 AM
LOWEST 31 4:00 PM
AVERAGE 66
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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 2026.....SUNRISE 7:03 AM MDT SUNSET 7:15 PM MDT
SEPTEMBER 22 2026.....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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