705
CDUS45 KRIW 190045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE AUG 18 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 18 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 79 12:00 PM 99 1986 87 -8 91
MINIMUM 57 2:06 AM 37 2009 51 6 52
AVERAGE 68 69 -1 72
PRECIPITATION (IN)
TODAY 0.01 0.48 1978 0.02 -0.01 0.00
MONTH TO DATE 1.86 0.51 1.35 0.23
SINCE JUN 1 2.54 3.04 -0.50 1.90
SINCE JAN 1 6.19 8.55 -2.36 6.82
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 5 6 -1 4
SINCE JUN 1 97 146 -49 100
SINCE JUL 1 5 20 -15 9
COOLING
TODAY 3 5 -2 7
MONTH TO DATE 121 109 12 103
SINCE JUN 1 498 360 138 405
SINCE JAN 1 499 364 135 405
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 9.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84
LOWEST 35
AVERAGE 60
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 97 2019
MINIMUM TEMPERATURE (F) 51 37 2002
SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE 6:15 AM MDT SUNSET 8:03 PM MDT
AUGUST 19 2026........SUNRISE 6:16 AM MDT SUNSET 8:02 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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