074
CDUS45 KRIW 130045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT FRI SEP 12 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 12 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 76 12:00 PM 94 1990 78 -2 79
MINIMUM 46 5:48 AM 25 2014 44 2 50
AVERAGE 61 61 0 65
PRECIPITATION (IN)
TODAY T 0.29 1957 0.03 -0.03 T
MONTH TO DATE 0.01 0.30 -0.29 0.17
SINCE SEP 1 0.01 0.30 -0.29 0.17
SINCE JAN 1 7.32 9.13 -1.81 7.15
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.2 -0.2 0.0
SINCE SEP 1 0.0 0.2 -0.2 0.0
SINCE JUL 1 0.0 0.2 -0.2 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 4 6 -2 0
MONTH TO DATE 36 49 -13 7
SINCE SEP 1 36 49 -13 7
SINCE JUL 1 46 94 -48 45
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 15 22 -7 51
SINCE SEP 1 15 22 -7 51
SINCE JAN 1 465 434 31 526
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 48 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 4.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86
LOWEST 31
AVERAGE 59
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 89 1981
2006
MINIMUM TEMPERATURE (F) 43 23 1949
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 6:43 AM MDT SUNSET 7:20 PM MDT
SEPTEMBER 13 2025.....SUNRISE 6:44 AM MDT SUNSET 7:19 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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