719
CDUS45 KRIW 190730
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED AUG 19 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 18 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 84 2:32 PM 100 2001 89 -5 95
2023
MINIMUM 59 11:59 PM 44 2009 56 3 57
AVERAGE 72 72 0 76
PRECIPITATION (IN)
YESTERDAY 0.02 0.39 2018 0.01 0.01 0.00
MONTH TO DATE 0.17 0.10 0.07 0.12
SINCE JUN 1 0.91 1.34 -0.43 1.44
SINCE JAN 1 2.33 3.69 -1.36 4.15
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 1 0 1 0
SINCE JUN 1 45 66 -21 46
SINCE JUL 1 1 4 -3 0
COOLING
YESTERDAY 7 7 0 11
MONTH TO DATE 150 167 -17 172
SINCE JUN 1 650 598 52 612
SINCE JAN 1 696 622 74 633
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 38 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 53 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 10:00 PM
LOWEST 29 4:00 PM
AVERAGE 57
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 2025
MINIMUM TEMPERATURE (F) 55 41 2015
SUNRISE AND SUNSET
AUGUST 19 2026........SUNRISE 6:20 AM MDT SUNSET 8:11 PM MDT
AUGUST 20 2026........SUNRISE 6:21 AM MDT SUNSET 8:09 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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