230
CDUS45 KRIW 280045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SUN SEP 27 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 27 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 71 4:18 PM 89 2015 70 1 81
MINIMUM 39 6:07 AM 22 1945 38 1 37
1964
AVERAGE 55 54 1 59
PRECIPITATION (IN)
TODAY 0.00 0.58 2013 0.04 -0.04 0.00
MONTH TO DATE 0.69 0.83 -0.14 2.49
SINCE SEP 1 0.69 0.83 -0.14 2.49
SINCE JAN 1 7.03 9.66 -2.63 9.80
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 0.0 1.2 -1.2 0.0
SINCE SEP 1 0.0 1.2 -1.2 0.0
SINCE JUL 1 0.0 1.2 -1.2 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 10 12 -2 6
MONTH TO DATE 82 176 -94 110
SINCE SEP 1 82 176 -94 110
SINCE JUL 1 87 221 -134 120
COOLING
TODAY 0 0 0 0
MONTH TO DATE 45 29 16 17
SINCE SEP 1 45 29 16 17
SINCE JAN 1 638 441 197 467
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83
LOWEST 31
AVERAGE 57
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 92 2010
MINIMUM TEMPERATURE (F) 38 15 1945
SUNRISE AND SUNSET
SEPTEMBER 27 2026.....SUNRISE 6:59 AM MDT SUNSET 6:54 PM MDT
SEPTEMBER 28 2026.....SUNRISE 7:00 AM MDT SUNSET 6:52 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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