532
CDUS45 KRIW 210727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT THU MAY 21 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR MAY 20 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 71 2:56 PM 90 2002 72 -1 65
MINIMUM 32 5:07 AM 29 2003 45 -13 46
AVERAGE 52 59 -7 56
PRECIPITATION (IN)
YESTERDAY 0.00 0.42 2010 0.05 -0.05 0.03
MONTH TO DATE 0.22 0.77 -0.55 1.52
SINCE MAR 1 1.12 1.52 -0.40 2.44
SINCE JAN 1 1.16 1.79 -0.63 2.65
DEGREE DAYS
HEATING
YESTERDAY 13 7 6 9
MONTH TO DATE 202 210 -8 168
SINCE MAR 1 1321 1600 -279 1448
SINCE JUL 1 5709 7424 -1715 6933
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 10 6 4 9
SINCE MAR 1 10 7 3 9
SINCE JAN 1 10 7 3 9
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WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 7.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 5:00 AM
LOWEST 12 3:00 PM
AVERAGE 38
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 88 2023
MINIMUM TEMPERATURE (F) 46 31 2001
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 5:39 AM MDT SUNSET 8:40 PM MDT
MAY 22 2026...........SUNRISE 5:38 AM MDT SUNSET 8:41 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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