Climatological Report (Daily)
Issued by NWS
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CDUS45 KRIW 180733
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON AUG 18 2025
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 91 2:18 PM 102 2020 89 2 95
MINIMUM 55 5:11 AM 41 2002 56 -1 55
AVERAGE 73 72 1 75
PRECIPITATION (IN)
YESTERDAY T 0.02 2003 0.01 -0.01 0.00
MONTH TO DATE 0.12 0.09 0.03 0.07
SINCE JUN 1 1.44 1.33 0.11 1.56
SINCE JAN 1 4.15 3.68 0.47 4.79
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 46 66 -20 33
SINCE JUL 1 0 4 -4 4
COOLING
YESTERDAY 8 8 0 10
MONTH TO DATE 161 160 1 142
SINCE JUN 1 601 591 10 629
SINCE JAN 1 622 615 7 629
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 6.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62 5:00 AM
LOWEST 17 3:00 PM
AVERAGE 40
..........................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 100 2001
2023
MINIMUM TEMPERATURE (F) 56 44 2009
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:19 AM MDT SUNSET 8:12 PM MDT
AUGUST 19 2025........SUNRISE 6:20 AM MDT SUNSET 8:11 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$