National Weather Service Text Product
AFOS product CLICPR
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLICPR
Product Timestamp: 2025-09-09 07:30 UTC
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082
CDUS45 KRIW 090730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT TUE SEP 09 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 8 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 85 12:54 PM 92 1994 80 5 90
1998
2005
MINIMUM 50 11:59 PM 29 1962 45 5 43
2020
AVERAGE 68 62 6
PRECIPITATION (IN)
YESTERDAY 0.00 0.84 1989 0.03 -0.03 0.00
MONTH TO DATE 0.01 0.19 -0.18 0.15
SINCE SEP 1 0.01 0.19 -0.18 0.15
SINCE JAN 1 7.32 9.02 -1.70 7.13
SNOWFALL (IN)
YESTERDAY 0.0 5.2 2020 0.0 0.0 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 0 4 -4 0
MONTH TO DATE 30 28 2 7
SINCE SEP 1 30 28 2 7
SINCE JUL 1 40 73 -33 45
COOLING
YESTERDAY 3 2 1 2
MONTH TO DATE 7 17 -10 31
SINCE SEP 1 7 17 -10 31
SINCE JAN 1 457 429 28 506
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62 1:00 AM
LOWEST 12 1:00 PM
AVERAGE 37
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 95 2021
MINIMUM TEMPERATURE (F) 45 24 2020
SUNRISE AND SUNSET
SEPTEMBER 9 2025.....SUNRISE 6:39 AM MDT SUNSET 7:26 PM MDT
SEPTEMBER 10 2025.....SUNRISE 6:41 AM MDT SUNSET 7:24 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$