889
CDUS45 KRIW 290731
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT TUE SEP 29 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 28 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 67 4:30 PM 92 2001 70 -3 86
MINIMUM 46 6:35 AM 28 1999 40 6 44
AVERAGE 57 55 2 65
PRECIPITATION (IN)
YESTERDAY 0.02 0.86 2019 0.03 -0.01 0.00
MONTH TO DATE 0.17 0.77 -0.60 0.65
SINCE SEP 1 0.17 0.77 -0.60 0.65
SINCE JAN 1 2.51 4.59 -2.08 4.85
DEGREE DAYS
HEATING
YESTERDAY 8 10 -2 0
MONTH TO DATE 60 148 -88 61
SINCE SEP 1 60 148 -88 61
SINCE JUL 1 62 167 -105 61
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 57 44 13 46
SINCE SEP 1 57 44 13 46
SINCE JAN 1 855 740 115 787
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 5.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 11:00 AM
LOWEST 43 5:00 PM
AVERAGE 59
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 97 2024
MINIMUM TEMPERATURE (F) 40 27 1999
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 7:08 AM MDT SUNSET 6:56 PM MDT
SEPTEMBER 30 2026.....SUNRISE 7:09 AM MDT SUNSET 6:54 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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