880
CDUS45 KRIW 170045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT MAY 16 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 16 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 78 2:00 PM 88 2012 67 11 63
MINIMUM 31 5:12 AM 25 2009 37 -6 37
AVERAGE 55 52 3 50
PRECIPITATION (IN)
TODAY T 0.80 1991 0.07 -0.07 0.00
MONTH TO DATE 0.32 1.13 -0.81 0.41
SINCE MAR 1 1.76 3.38 -1.62 3.33
SINCE JAN 1 2.30 4.43 -2.13 4.05
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE T 2.0 -2.0 0.3
SINCE MAR 1 11.4 22.8 -11.4 16.0
SINCE JUL 1 27.1 71.1 -44.0 26.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 10 13 -3 15
MONTH TO DATE 197 258 -61 200
SINCE MAR 1 1403 1847 -444 1749
SINCE JUL 1 5580 7209 -1629 6764
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 37 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 5.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 12
AVERAGE 49
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 87 1948
MINIMUM TEMPERATURE (F) 38 28 1942
1986
1990
SUNRISE AND SUNSET
MAY 16 2026...........SUNRISE 5:42 AM MDT SUNSET 8:23 PM MDT
MAY 17 2026...........SUNRISE 5:41 AM MDT SUNSET 8:24 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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