Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 210729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 21 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 20 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 99R 3:23 PM 97 1973 86 13 96
MINIMUM 58 5:20 AM 38 2016 51 7 56
AVERAGE 79 68 11
PRECIPITATION (IN)
YESTERDAY 0.00 0.15 1982 0.02 -0.02 0.00
MONTH TO DATE 0.23 0.56 -0.33 0.19
SINCE JUN 1 1.90 3.09 -1.19 1.52
SINCE JAN 1 6.82 8.60 -1.78 6.78
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 1 -1 0
MONTH TO DATE 4 8 -4 6
SINCE JUN 1 100 148 -48 76
SINCE JUL 1 9 22 -13 22
COOLING
YESTERDAY 14 4 10 11
MONTH TO DATE 127 118 9 136
SINCE JUN 1 429 369 60 424
SINCE JAN 1 429 373 56 427
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 6.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 58 5:00 AM
LOWEST 7 5:00 PM
AVERAGE 33
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 96 2024
MINIMUM TEMPERATURE (F) 50 38 2016
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:19 AM MDT SUNSET 7:58 PM MDT
AUGUST 22 2025........SUNRISE 6:20 AM MDT SUNSET 7:56 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$