051
CDUS45 KRIW 130045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT SEP 12 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 12 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 81 3:37 PM 94 1990 78 3 76
MINIMUM 38 5:49 AM 25 2014 44 -6 46
AVERAGE 60 61 -1 61
PRECIPITATION (IN)
TODAY 0.00 0.29 1957 0.03 -0.03 T
MONTH TO DATE 0.01 0.30 -0.29 0.01
SINCE SEP 1 0.01 0.30 -0.29 0.01
SINCE JAN 1 6.35 9.13 -2.78 7.32
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 5 6 -1 4
MONTH TO DATE 13 49 -36 36
SINCE SEP 1 13 49 -36 36
SINCE JUL 1 18 94 -76 46
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 41 22 19 15
SINCE SEP 1 41 22 19 15
SINCE JAN 1 634 434 200 465
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89
LOWEST 23
AVERAGE 56
......................................................
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 2026.....SUNRISE 6:42 AM MDT SUNSET 7:21 PM MDT
SEPTEMBER 13 2026.....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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