621
CDUS45 KRIW 070726
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
126 AM MDT SUN SEP 07 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 6 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 79 4:23 PM 96 1978 80 -1 84
2022
MINIMUM 32R 5:15 AM 33 1956 46 -14 47
2010
AVERAGE 56 63 -7
PRECIPITATION (IN)
YESTERDAY 0.00 0.35 1951 0.02 -0.02 0.00
MONTH TO DATE 0.01 0.13 -0.12 0.15
SINCE SEP 1 0.01 0.13 -0.12 0.15
SINCE JAN 1 7.32 8.96 -1.64 7.13
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.1 -0.1 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 9 4 5 0
MONTH TO DATE 24 20 4 7
SINCE SEP 1 24 20 4 7
SINCE JUL 1 34 65 -31 45
COOLING
YESTERDAY 0 2 -2 1
MONTH TO DATE 4 13 -9 26
SINCE SEP 1 4 13 -9 26
SINCE JAN 1 454 425 29 501
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 4.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 3:00 AM
LOWEST 18 5:00 PM
AVERAGE 52
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 96 2022
MINIMUM TEMPERATURE (F) 45 28 2010
SUNRISE AND SUNSET
SEPTEMBER 7 2025.....SUNRISE 6:37 AM MDT SUNSET 7:29 PM MDT
SEPTEMBER 8 2025.....SUNRISE 6:38 AM MDT SUNSET 7:28 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