807
CDUS45 KRIW 010728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON SEP 01 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 31 2025
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)
YESTERDAY
MAXIMUM 82 MM 94 1954 83 -1 90
2007
MINIMUM 49 MM 33 1965 47 2 43
1977
2020
AVERAGE 66 65 1
PRECIPITATION (IN)
YESTERDAY 0.00 0.14 1972 0.02 -0.02 0.00
MONTH TO DATE 0.72 0.79 -0.07 0.39
SINCE JUN 1 2.39 3.32 -0.93 1.72
SINCE JAN 1 7.31 8.83 -1.52 6.98
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0 0.0 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 0
DEGREE DAYS
HEATING
YESTERDAY 0 3 -3 0
MONTH TO DATE 5 28 -23 22
SINCE JUN 1 101 168 -67 92
SINCE JUL 1 10 42 -32 38
COOLING
YESTERDAY 1 3 -2 2
MONTH TO DATE 148 157 -9 184
SINCE JUN 1 450 408 42 472
SINCE JAN 1 450 412 38 475
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 8.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1:00 AM
LOWEST 17 5:00 PM
AVERAGE 55
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 97 1995
MINIMUM TEMPERATURE (F) 47 32 1965
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:31 AM MDT SUNSET 7:40 PM MDT
SEPTEMBER 2 2025.....SUNRISE 6:32 AM MDT SUNSET 7:38 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page