836
CDUS45 KRIW 200730
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED MAY 20 2026
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR MAY 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 50 5:28 PM 86 1954 64 -14 56
MINIMUM 28 5:52 AM 25 2003 40 -12 33
AVERAGE 39 52 -13
PRECIPITATION (IN)
YESTERDAY 0.00 0.70 1953 0.04 -0.04 0.00
MONTH TO DATE 0.14 0.80 -0.66 0.31
SINCE MAR 1 1.42 2.29 -0.87 2.02
SINCE JAN 1 1.58 3.04 -1.46 2.28
DEGREE DAYS
HEATING
YESTERDAY 26 13 13 20
MONTH TO DATE 281 311 -30 258
SINCE MAR 1 1543 1984 -441 1689
SINCE JUL 1 5925 7774 -1849 6910
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 15 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 6.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 5:00 AM
LOWEST 25 5:00 PM
AVERAGE 59
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 86 1954
MINIMUM TEMPERATURE (F) 40 26 2022
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 5:52 AM MDT SUNSET 8:34 PM MDT
MAY 21 2026...........SUNRISE 5:51 AM MDT SUNSET 8:35 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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