110
CDUS45 KRIW 080045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 07 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 7 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 83 2:57 PM 96 2022 80 3 78
MINIMUM 64 7:01 AM 28 2010 45 19 39
AVERAGE 74 63 11 59
PRECIPITATION (IN)
TODAY T 0.68 1946 0.03 -0.03 T
MONTH TO DATE 0.01 0.16 -0.15 0.01
SINCE SEP 1 0.01 0.16 -0.15 0.01
SINCE JAN 1 6.35 8.99 -2.64 7.32
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 4 -4 6
MONTH TO DATE 0 24 -24 30
SINCE SEP 1 0 24 -24 30
SINCE JUL 1 5 69 -64 40
COOLING
TODAY 9 2 7 0
MONTH TO DATE 43 15 28 4
SINCE SEP 1 43 15 28 4
SINCE JAN 1 636 427 209 454
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 21.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 50
LOWEST 15
AVERAGE 33
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 92 1994
1998
2005
MINIMUM TEMPERATURE (F) 45 29 1962
2020
SUNRISE AND SUNSET
SEPTEMBER 7 2026.....SUNRISE 6:37 AM MDT SUNSET 7:30 PM MDT
SEPTEMBER 8 2026.....SUNRISE 6:38 AM MDT SUNSET 7:28 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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