838
CDUS45 KRIW 200730
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED MAY 20 2026
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR MAY 19 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 63 3:50 PM 94 2009 72 -9 59
MINIMUM 27R 5:03 AM 31 2003 45 -18 42
AVERAGE 45 58 -13 51
PRECIPITATION (IN)
YESTERDAY 0.00 0.72 2010 0.05 -0.05 T
MONTH TO DATE 0.22 0.72 -0.50 1.49
SINCE MAR 1 1.12 1.47 -0.35 2.41
SINCE JAN 1 1.16 1.74 -0.58 2.62
DEGREE DAYS
HEATING
YESTERDAY 20 8 12 14
MONTH TO DATE 189 203 -14 159
SINCE MAR 1 1308 1593 -285 1439
SINCE JUL 1 5696 7417 -1721 6924
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 10 5 5 9
SINCE MAR 1 10 6 4 9
SINCE JAN 1 10 6 4 9
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 5.2
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 75 3:00 AM
LOWEST 14 4:00 PM
AVERAGE 45
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THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 90 2002
MINIMUM TEMPERATURE (F) 45 29 2003
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 5:39 AM MDT SUNSET 8:39 PM MDT
MAY 21 2026...........SUNRISE 5:39 AM MDT SUNSET 8:40 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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