952
CDUS45 KRIW 190730
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SAT SEP 19 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 18 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 81 2:26 PM 90 2004 76 5 79
2021
MINIMUM 47 4:41 AM 27 2003 44 3 44
AVERAGE 64 60 4 62
PRECIPITATION (IN)
YESTERDAY 0.01 0.16 2024 0.03 -0.02 0.00
MONTH TO DATE 0.03 0.44 -0.41 0.12
SINCE SEP 1 0.03 0.44 -0.41 0.12
SINCE JAN 1 2.37 4.26 -1.89 4.32
DEGREE DAYS
HEATING
YESTERDAY 1 6 -5 3
MONTH TO DATE 28 66 -38 39
SINCE SEP 1 28 66 -38 39
SINCE JUL 1 30 85 -55 39
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 55 41 14 45
SINCE SEP 1 55 41 14 45
SINCE JAN 1 853 737 116 786
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 4.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 27 3:00 PM
AVERAGE 60
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 2010
MINIMUM TEMPERATURE (F) 44 30 2003
SUNRISE AND SUNSET
SEPTEMBER 19 2026.....SUNRISE 6:56 AM MDT SUNSET 7:15 PM MDT
SEPTEMBER 20 2026.....SUNRISE 6:57 AM MDT SUNSET 7:13 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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