Climatological Report (Daily)
Issued by NWS
Issued by NWS
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967
CDUS45 KRIW 110730
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1230 AM MST THU DEC 11 2025
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 10 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 45 3:01 PM 53 2003 32 13 33
MINIMUM 30 3:56 AM -22 2009 9 21 20
AVERAGE 38 20 18 27
PRECIPITATION (IN)
YESTERDAY 0.00 0.09 2012 0.01 -0.01 T
MONTH TO DATE 0.20 0.04 0.16 T
SINCE DEC 1 0.20 0.04 0.16 T
SINCE JAN 1 7.03 5.48 1.55 6.28
DEGREE DAYS
HEATING
YESTERDAY 27 45 -18 38
MONTH TO DATE 341 433 -92 343
SINCE DEC 1 341 433 -92 343
SINCE JUL 1 1714 2210 -496 1738
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 791 744 47 832
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 4.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 9:00 PM
LOWEST 49 1:00 PM
AVERAGE 66
..........................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 31 63 2004
MINIMUM TEMPERATURE (F) 9 -17 2000
SUNRISE AND SUNSET
DECEMBER 11 2025......SUNRISE 7:39 AM MST SUNSET 4:32 PM MST
DECEMBER 12 2025......SUNRISE 7:40 AM MST SUNSET 4:33 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$