299
CDUS45 KRIW 180728
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT TUE AUG 18 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 17 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 3:07 PM 102 2020 89 -5 91
MINIMUM 58 6:14 AM 41 2002 56 2 55
AVERAGE 71 72 -1 73
PRECIPITATION (IN)
YESTERDAY 0.02R 0.02 2003 0.01 0.01 T
MONTH TO DATE 0.15 0.09 0.06 0.12
SINCE JUN 1 0.89 1.33 -0.44 1.44
SINCE JAN 1 2.31 3.68 -1.37 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 6 8 -2 8
MONTH TO DATE 143 160 -17 161
SINCE JUN 1 643 591 52 601
SINCE JAN 1 689 615 74 622
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 7.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 5:00 AM
LOWEST 27 1:00 PM
AVERAGE 54
......................................................
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 2026........SUNRISE 6:19 AM MDT SUNSET 8:13 PM MDT
AUGUST 19 2026........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.
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