474
CDUS45 KRIW 100727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT THU SEP 10 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 9 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 83 3:58 PM 97 2021 80 3 86
MINIMUM 43 6:03 AM 29 2020 48 -5 48
AVERAGE 63 64 -1 67
PRECIPITATION (IN)
YESTERDAY 0.00 0.26 2002 0.02 -0.02 0.01
MONTH TO DATE T 0.19 -0.19 0.01
SINCE SEP 1 T 0.19 -0.19 0.01
SINCE JAN 1 2.34 4.01 -1.67 4.21
DEGREE DAYS
HEATING
YESTERDAY 2 3 -1 0
MONTH TO DATE 6 23 -17 9
SINCE SEP 1 6 23 -17 9
SINCE JUL 1 8 42 -34 9
COOLING
YESTERDAY 0 2 -2 2
MONTH TO DATE 50 28 22 28
SINCE SEP 1 50 28 22 28
SINCE JAN 1 848 724 124 769
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62 6:00 AM
LOWEST 13 6:00 PM
AVERAGE 38
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 2021
MINIMUM TEMPERATURE (F) 47 33 2007
2020
SUNRISE AND SUNSET
SEPTEMBER 10 2026.....SUNRISE 6:46 AM MDT SUNSET 7:32 PM MDT
SEPTEMBER 11 2026.....SUNRISE 6:47 AM MDT SUNSET 7:30 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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