947
CDUS45 KRIW 190730
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SAT SEP 19 2026
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 18 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 65 3:17 PM 84 2014 70 -5 73
MINIMUM 50 11:29 PM 5 1965 43 7 39
AVERAGE 58 56 2
PRECIPITATION (IN)
YESTERDAY 0.09 0.43 1967 0.03 0.06 0.00
MONTH TO DATE 0.17 0.43 -0.26 0.13
SINCE SEP 1 0.17 0.43 -0.26 0.13
SINCE JAN 1 3.22 5.67 -2.45 3.07
DEGREE DAYS
HEATING
YESTERDAY 7 9 -2 9
MONTH TO DATE 31 105 -74 74
SINCE SEP 1 31 105 -74 74
SINCE JUL 1 45 164 -119 92
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 24 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 8.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 10:00 PM
LOWEST 46 10:00 AM
AVERAGE 71
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 86 2010
MINIMUM TEMPERATURE (F) 43 21 1965
SUNRISE AND SUNSET
SEPTEMBER 19 2026.....SUNRISE 7:01 AM MDT SUNSET 7:18 PM MDT
SEPTEMBER 20 2026.....SUNRISE 7:02 AM MDT SUNSET 7:17 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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