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CDUS45 KRIW 210732
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT MON SEP 21 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 20 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 63 4:24 PM 85 2016 75 -12 84
MINIMUM 51 11:40 PM 31 1999 43 8 48
AVERAGE 57 59 -2 66
PRECIPITATION (IN)
YESTERDAY 0.12 0.30 2004 0.04 0.08 0.00
MONTH TO DATE 0.15 0.51 -0.36 0.12
SINCE SEP 1 0.15 0.51 -0.36 0.12
SINCE JAN 1 2.49 4.33 -1.84 4.32
DEGREE DAYS
HEATING
YESTERDAY 8 7 1 0
MONTH TO DATE 39 79 -40 41
SINCE SEP 1 39 79 -40 41
SINCE JUL 1 41 98 -57 41
COOLING
YESTERDAY 0 1 -1 1
MONTH TO DATE 55 43 12 46
SINCE SEP 1 55 43 12 46
SINCE JAN 1 853 739 114 787
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 6.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 67 4:00 PM
AVERAGE 82
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 86 2013
2015
2025
MINIMUM TEMPERATURE (F) 43 32 1999
2000
2021
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 6:58 AM MDT SUNSET 7:11 PM MDT
SEPTEMBER 22 2026.....SUNRISE 7:00 AM MDT SUNSET 7:09 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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