751
CDUS45 KRIW 270045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT FRI SEP 26 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 26 2025
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 79 11:34 AM 91 2015 70 9 90
MINIMUM 51 12:28 AM 21 1972 38 13 51
AVERAGE 65 54 11 71
PRECIPITATION (IN)
TODAY 0.00 0.29 2013 0.05 -0.05 0.00
MONTH TO DATE 2.49 0.79 1.70 0.24
SINCE SEP 1 2.49 0.79 1.70 0.24
SINCE JAN 1 9.80 9.62 0.18 7.22
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 0.0 1.1 -1.1 0.0
SINCE SEP 1 0.0 1.1 -1.1 0.0
SINCE JUL 1 0.0 1.1 -1.1 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 11 -11 0
MONTH TO DATE 102 164 -62 85
SINCE SEP 1 102 164 -62 85
SINCE JUL 1 112 209 -97 123
COOLING
TODAY 0 0 0 6
MONTH TO DATE 17 29 -12 57
SINCE SEP 1 17 29 -12 57
SINCE JAN 1 467 441 26 532
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 13.5
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 56
LOWEST 21
AVERAGE 39
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 89 2015
MINIMUM TEMPERATURE (F) 38 22 1945
1964
SUNRISE AND SUNSET
SEPTEMBER 26 2025.....SUNRISE 6:58 AM MDT SUNSET 6:55 PM MDT
SEPTEMBER 27 2025.....SUNRISE 6:59 AM MDT SUNSET 6:53 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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