Climatological Report (Daily)
Issued by NWS
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CDUS45 KRIW 200734
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
134 AM MDT SUN SEP 20 2026
...................................
...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 19 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 MM 86 2010 69 -4 75
MINIMUM 43 MM 21 1965 43 0 44
AVERAGE 54 56 -2
PRECIPITATION (IN)
YESTERDAY 0.12 0.87 1950 0.03 0.09 0.00
MONTH TO DATE 0.29 0.46 -0.17 0.13
SINCE SEP 1 0.29 0.46 -0.17 0.13
SINCE JAN 1 3.34 5.70 -2.36 3.07
DEGREE DAYS
HEATING
YESTERDAY 11 9 2 5
MONTH TO DATE 42 114 -72 79
SINCE SEP 1 42 114 -72 79
SINCE JUL 1 56 173 -117 97
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
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 8.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 7:00 AM
LOWEST 45 1:00 PM
AVERAGE 71
..........................................................
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 81 1966
MINIMUM TEMPERATURE (F) 42 19 1965
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 7:02 AM MDT SUNSET 7:17 PM MDT
SEPTEMBER 21 2026.....SUNRISE 7:03 AM MDT SUNSET 7:15 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$