802
CDUS45 KRIW 090728
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SAT MAY 09 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR MAY 8 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 73 5:12 PM 86 2004 68 5 81
MINIMUM 40 5:24 AM 26 2010 41 -1 42
AVERAGE 57 54 3 62
PRECIPITATION (IN)
YESTERDAY 0.07 0.38 2024 0.04 0.03 0.00
MONTH TO DATE 0.18 0.24 -0.06 0.12
SINCE MAR 1 1.08 0.99 0.09 1.04
SINCE JAN 1 1.12 1.26 -0.14 1.25
DEGREE DAYS
HEATING
YESTERDAY 8 11 -3 3
MONTH TO DATE 104 101 3 85
SINCE MAR 1 1223 1491 -268 1365
SINCE JUL 1 5611 7315 -1704 6850
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 1 -1 0
SINCE JAN 1 0 1 -1 0
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WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 5.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 24 4:00 PM
AVERAGE 61
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 85 2007
MINIMUM TEMPERATURE (F) 41 20 2002
SUNRISE AND SUNSET
MAY 9 2026...........SUNRISE 5:52 AM MDT SUNSET 8:27 PM MDT
MAY 10 2026...........SUNRISE 5:50 AM MDT SUNSET 8:28 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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