Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 310731
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT FRI JUL 31 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR JULY 30 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 80 3:52 PM 82 2000 74 6 71
2012
MINIMUM 44 5:27 AM 29 2009 40 4 42
AVERAGE 62 57 5 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.25 2025 0.05 -0.05 0.25
MONTH TO DATE 0.85 1.47 -0.62 0.74
SINCE JUN 1 2.96 3.85 -0.89 1.39
SINCE JAN 1 11.20 13.88 -2.68 10.62
DEGREE DAYS
HEATING
YESTERDAY 3 8 -5 8
MONTH TO DATE 114 286 -172 224
SINCE JUN 1 628 824 -196 666
SINCE JUL 1 114 286 -172 224
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 2 0 2 1
SINCE JUN 1 2 0 2 1
SINCE JAN 1 2 0 2 1
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 2.7
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 90 4:00 AM
LOWEST 16 4:00 PM
AVERAGE 53
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 86 2000
MINIMUM TEMPERATURE (F) 40 34 2001
2008
SUNRISE AND SUNSET
JULY 31 2026..........SUNRISE 6:07 AM MDT SUNSET 8:48 PM MDT
AUGUST 1 2026........SUNRISE 6:09 AM MDT SUNSET 8:47 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$