799
CDUS45 KRIW 130727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT SAT SEP 13 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 12 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 84 3:15 PM 93 2017 79 5 69
MINIMUM 57 11:59 PM 30 2014 46 11 49
AVERAGE 71 63 8 59
PRECIPITATION (IN)
YESTERDAY 0.08 0.19 2024 0.03 0.05 0.19
MONTH TO DATE 0.09 0.27 -0.18 0.22
SINCE SEP 1 0.09 0.27 -0.18 0.22
SINCE JAN 1 4.29 4.09 0.20 5.53
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 6
MONTH TO DATE 9 35 -26 6
SINCE SEP 1 9 35 -26 6
SINCE JUL 1 9 54 -45 19
COOLING
YESTERDAY 6 2 4 0
MONTH TO DATE 45 34 11 64
SINCE SEP 1 45 34 11 64
SINCE JAN 1 786 730 56 805
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WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 11:00 PM
LOWEST 20 3:00 PM
AVERAGE 55
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2015
MINIMUM TEMPERATURE (F) 46 31 1999
SUNRISE AND SUNSET
SEPTEMBER 13 2025.....SUNRISE 6:49 AM MDT SUNSET 7:26 PM MDT
SEPTEMBER 14 2025.....SUNRISE 6:50 AM MDT SUNSET 7:24 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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