Climatological Report (Daily)
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CDUS45 KRIW 130732
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT SUN SEP 13 2026
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 12 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 76 4:15 PM 93 2017 79 -3 84
MINIMUM 46 3:52 AM 30 2014 46 0 57
AVERAGE 61 63 -2 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.19 2024 0.03 -0.03 0.08
MONTH TO DATE T 0.27 -0.27 0.09
SINCE SEP 1 T 0.27 -0.27 0.09
SINCE JAN 1 2.34 4.09 -1.75 4.29
DEGREE DAYS
HEATING
YESTERDAY 4 4 0 0
MONTH TO DATE 10 35 -25 9
SINCE SEP 1 10 35 -25 9
SINCE JUL 1 12 54 -42 9
COOLING
YESTERDAY 0 2 -2 6
MONTH TO DATE 53 34 19 45
SINCE SEP 1 53 34 19 45
SINCE JAN 1 851 730 121 786
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 6.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 3:00 AM
LOWEST 26 4:00 PM
AVERAGE 53
..........................................................
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 2026.....SUNRISE 6:49 AM MDT SUNSET 7:26 PM MDT
SEPTEMBER 14 2026.....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.
$$