Climatological Report (Daily)
Issued by NWS
Issued by NWS
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777
CDUS45 KRIW 190730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED AUG 19 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 18 2026...
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)
YESTERDAY
MAXIMUM 79 12:00 PM 99 1986 87 -8 91
MINIMUM 56 11:59 PM 37 2009 51 5 52
AVERAGE 68 69 -1
PRECIPITATION (IN)
YESTERDAY 0.03 0.48 1978 0.02 0.01 0.00
MONTH TO DATE 1.88 0.51 1.37 0.23
SINCE JUN 1 2.56 3.04 -0.48 1.90
SINCE JAN 1 6.21 8.55 -2.34 6.82
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 5 6 -1 4
SINCE JUN 1 97 146 -49 100
SINCE JUL 1 5 20 -15 9
COOLING
YESTERDAY 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 26 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 8.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 4:00 AM
LOWEST 35 12:00 PM
AVERAGE 60
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 97 2019
MINIMUM TEMPERATURE (F) 51 37 2002
SUNRISE AND SUNSET
AUGUST 19 2026........SUNRISE 6:16 AM MDT SUNSET 8:02 PM MDT
AUGUST 20 2026........SUNRISE 6:18 AM MDT SUNSET 8:00 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$