130
CDUS45 KRIW 150728
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON SEP 15 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 14 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 80 4:43 PM 90 2015 78 2 77
2020
MINIMUM 44 6:25 AM 35 2003 46 -2 41
2007
2012
AVERAGE 62 62 0 59
PRECIPITATION (IN)
YESTERDAY 0.00 0.60 2017 0.03 -0.03 0.00
MONTH TO DATE 0.09 0.33 -0.24 0.22
SINCE SEP 1 0.09 0.33 -0.24 0.22
SINCE JAN 1 4.29 4.15 0.14 5.53
DEGREE DAYS
HEATING
YESTERDAY 3 5 -2 6
MONTH TO DATE 16 44 -28 18
SINCE SEP 1 16 44 -28 18
SINCE JUL 1 16 63 -47 31
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 45 37 8 64
SINCE SEP 1 45 37 8 64
SINCE JAN 1 786 733 53 805
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WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 6:00 AM
LOWEST 21 4:00 PM
AVERAGE 59
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 2000
MINIMUM TEMPERATURE (F) 45 35 2003
SUNRISE AND SUNSET
SEPTEMBER 15 2025.....SUNRISE 6:52 AM MDT SUNSET 7:22 PM MDT
SEPTEMBER 16 2025.....SUNRISE 6:53 AM MDT SUNSET 7:20 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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