655
CDUS45 KRIW 150734
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
134 AM MDT FRI MAY 15 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 14 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 76 4:04 PM 88 2013 66 10 62
MINIMUM 47 10:53 PM 22 2004 37 10 40
AVERAGE 62 51 11
PRECIPITATION (IN)
YESTERDAY 0.00 0.74 1957 0.07 -0.07 0.02
MONTH TO DATE 0.32 0.98 -0.66 0.36
SINCE MAR 1 1.76 3.23 -1.47 3.28
SINCE JAN 1 2.30 4.28 -1.98 4.00
SNOWFALL (IN)
YESTERDAY 0.0 1.0 1970 0.1 -0.1 0.0
MONTH TO DATE T 1.9 -1.9 0.3
SINCE MAR 1 11.4 22.7 -11.3 16.0
SINCE JUL 1 27.1 71.0 -43.9 26.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 14 -11 14
MONTH TO DATE 182 232 -50 170
SINCE MAR 1 1388 1821 -433 1719
SINCE JUL 1 5565 7183 -1618 6734
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
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WIND (MPH)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 17.6
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 42 5:00 AM
LOWEST 6 2:00 PM
AVERAGE 24
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 87 1984
MINIMUM TEMPERATURE (F) 37 27 1983
SUNRISE AND SUNSET
MAY 15 2026...........SUNRISE 5:43 AM MDT SUNSET 8:22 PM MDT
MAY 16 2026...........SUNRISE 5:42 AM MDT SUNSET 8:23 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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