Climatological Report (Daily)
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079
CDUS45 KRIW 290729
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT MON SEP 29 2025
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 28 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 86 4:27 PM 92 2001 70 16 91
MINIMUM 44 5:50 AM 28 1999 40 4 44
AVERAGE 65 55 10 68
PRECIPITATION (IN)
YESTERDAY 0.00 0.86 2019 0.03 -0.03 0.00
MONTH TO DATE 0.65 0.77 -0.12 0.38
SINCE SEP 1 0.65 0.77 -0.12 0.38
SINCE JAN 1 4.85 4.59 0.26 5.69
DEGREE DAYS
HEATING
YESTERDAY 0 10 -10 0
MONTH TO DATE 61 148 -87 59
SINCE SEP 1 61 148 -87 59
SINCE JUL 1 61 167 -106 72
COOLING
YESTERDAY 0 0 0 3
MONTH TO DATE 46 44 2 84
SINCE SEP 1 46 44 2 84
SINCE JAN 1 787 740 47 825
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 3.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 4:00 AM
LOWEST 17 4:00 PM
AVERAGE 51
..........................................................
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 2025.....SUNRISE 7:08 AM MDT SUNSET 6:56 PM MDT
SEPTEMBER 30 2025.....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.
$$