031
CDUS45 KRIW 200045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE MAY 19 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 19 2026
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 52 2:45 PM 89 1992 68 -16 48
2009
MINIMUM 26R 3:18 AM 27 1966 38 -12 38
1968
AVERAGE 39 53 -14 43
PRECIPITATION (IN)
TODAY 0.00 1.24 2013 0.08 -0.08 0.23
MONTH TO DATE 1.08 1.37 -0.29 0.72
SINCE MAR 1 2.52 3.62 -1.10 3.64
SINCE JAN 1 3.06 4.67 -1.61 4.36
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 2.5 2.2 0.3 0.3
SINCE MAR 1 13.9 23.0 -9.1 16.0
SINCE JUL 1 29.6 71.3 -41.7 26.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 26 12 14 22
MONTH TO DATE 271 295 -24 248
SINCE MAR 1 1477 1884 -407 1797
SINCE JUL 1 5654 7246 -1592 6812
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 11.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 36
AVERAGE 66
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 89 1954
1964
MINIMUM TEMPERATURE (F) 39 24 2003
SUNRISE AND SUNSET
MAY 19 2026...........SUNRISE 5:39 AM MDT SUNSET 8:26 PM MDT
MAY 20 2026...........SUNRISE 5:38 AM MDT SUNSET 8:27 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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