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CDUS45 KRIW 220731
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT TUE SEP 22 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 21 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 74 4:46 PM 86 2013 74 0 86
2015
2025
MINIMUM 43 6:42 AM 32 1999 43 0 43
2000
2021
AVERAGE 59 58 1 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.15 2006 0.03 -0.03 0.00
2006
2019
MONTH TO DATE 0.15 0.54 -0.39 0.12
SINCE SEP 1 0.15 0.54 -0.39 0.12
SINCE JAN 1 2.49 4.36 -1.87 4.32
DEGREE DAYS
HEATING
YESTERDAY 6 7 -1 0
MONTH TO DATE 45 86 -41 41
SINCE SEP 1 45 86 -41 41
SINCE JUL 1 47 105 -58 41
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 55 44 11 46
SINCE SEP 1 55 44 11 46
SINCE JAN 1 853 740 113 787
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 3.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 3:00 AM
LOWEST 35 5:00 PM
AVERAGE 68
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 90 2007
MINIMUM TEMPERATURE (F) 43 30 2002
2003
SUNRISE AND SUNSET
SEPTEMBER 22 2026.....SUNRISE 7:00 AM MDT SUNSET 7:09 PM MDT
SEPTEMBER 23 2026.....SUNRISE 7:01 AM MDT SUNSET 7:08 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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