Climatological Report (Daily)
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CDUS45 KRIW 160727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT WED SEP 16 2026
...................................
...THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 15 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 74 5:18 PM 96 2000 77 -3 74
MINIMUM 40 6:07 AM 35 2003 45 -5 46
AVERAGE 57 61 -4 60
PRECIPITATION (IN)
YESTERDAY 0.00 0.74 2017 0.03 -0.03 0.03
MONTH TO DATE 0.02 0.36 -0.34 0.12
SINCE SEP 1 0.02 0.36 -0.34 0.12
SINCE JAN 1 2.36 4.18 -1.82 4.32
DEGREE DAYS
HEATING
YESTERDAY 8 5 3 5
MONTH TO DATE 20 49 -29 21
SINCE SEP 1 20 49 -29 21
SINCE JUL 1 22 68 -46 21
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 55 38 17 45
SINCE SEP 1 55 38 17 45
SINCE JAN 1 853 734 119 786
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 5.8
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 70 6:00 AM
LOWEST 19 6:00 PM
AVERAGE 45
..........................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 2000
MINIMUM TEMPERATURE (F) 45 38 1999
2005
SUNRISE AND SUNSET
SEPTEMBER 16 2026.....SUNRISE 6:53 AM MDT SUNSET 7:21 PM MDT
SEPTEMBER 17 2026.....SUNRISE 6:54 AM MDT SUNSET 7:19 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$