559
CDUS45 KRIW 180733
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON MAY 18 2026
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR MAY 17 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 46 12:00 AM 82 1973 64 -18 65
MINIMUM 32 MM 26 1986 39 -7 35
AVERAGE 39 51 -12
PRECIPITATION (IN)
YESTERDAY 0.05 1.05 1962 0.04 0.01 T
MONTH TO DATE 0.13 0.71 -0.58 0.23
SINCE MAR 1 1.41 2.20 -0.79 1.94
SINCE JAN 1 1.57 2.95 -1.38 2.20
DEGREE DAYS
HEATING
YESTERDAY 26 14 12 15
MONTH TO DATE 222 285 -63 220
SINCE MAR 1 1484 1958 -474 1651
SINCE JUL 1 5866 7748 -1882 6872
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 2 0 2 1
SINCE MAR 1 2 0 2 1
SINCE JAN 1 2 0 2 1
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 11.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 9:00 PM
LOWEST 32 10:00 AM
AVERAGE 62
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 83 1970
MINIMUM TEMPERATURE (F) 39 28 1971
2017
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:54 AM MDT SUNSET 8:32 PM MDT
MAY 19 2026...........SUNRISE 5:53 AM MDT SUNSET 8:33 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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