Climatological Report (Daily)
Issued by NWS
Issued by NWS
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953
CDUS45 KRIW 100045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT MAY 09 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR MAY 9 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 60 9:47 AM 83 1962 64 -4 75
MINIMUM 42 10:50 AM 18 2002 35 7 39
AVERAGE 51 49 2 57
PRECIPITATION (IN)
TODAY 0.07 0.60 2011 0.07 0.00 0.00
MONTH TO DATE 0.32 0.61 -0.29 0.34
SINCE MAR 1 1.76 2.86 -1.10 3.26
SINCE JAN 1 2.30 3.91 -1.61 3.98
SNOWFALL (IN)
TODAY MM 0.2 MM 0.0
MONTH TO DATE T 1.4 -1.4 0.3
SINCE MAR 1 11.4 22.2 -10.8 16.0
SINCE JUL 1 27.1 70.5 -43.4 26.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 14 16 -2 8
MONTH TO DATE 152 158 -6 142
SINCE MAR 1 1358 1747 -389 1691
SINCE JUL 1 5535 7109 -1574 6706
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 32 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 10.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89
LOWEST 45
AVERAGE 67
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 85 1961
MINIMUM TEMPERATURE (F) 35 20 1990
SUNRISE AND SUNSET
MAY 9 2026...........SUNRISE 5:49 AM MDT SUNSET 8:16 PM MDT
MAY 10 2026...........SUNRISE 5:48 AM MDT SUNSET 8:17 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$