Climatological Report (Daily)
Issued by NWS
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CDUS45 KRIW 210729
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 21 2025
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 20 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 101R 3:09 PM 98 2024 88 13 98
MINIMUM 59 5:57 AM 45 2016 55 4 55
AVERAGE 80 71 9 77
PRECIPITATION (IN)
YESTERDAY T 0.59 2021 0.00 0.00 0.00
MONTH TO DATE 0.12 0.11 0.01 0.07
SINCE JUN 1 1.44 1.35 0.09 1.56
SINCE JAN 1 4.15 3.70 0.45 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 15 7 8 12
MONTH TO DATE 200 181 19 186
SINCE JUN 1 640 612 28 673
SINCE JAN 1 661 636 25 673
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 7.4
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 47 6:00 AM
LOWEST 9 1:00 PM
AVERAGE 28
..........................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 2023
2024
MINIMUM TEMPERATURE (F) 55 47 2016
2021
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:23 AM MDT SUNSET 8:07 PM MDT
AUGUST 22 2025........SUNRISE 6:24 AM MDT SUNSET 8:06 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$