143
CDUS45 KRIW 280730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT THU MAY 28 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 27 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 2:50 PM 91 1969 72 4 72
MINIMUM 48 4:27 AM 30 1950 41 7 37
AVERAGE 62 56 6
PRECIPITATION (IN)
YESTERDAY 0.00 0.65 2019 0.07 -0.07 0.08
MONTH TO DATE 1.67 1.94 -0.27 1.08
SINCE MAR 1 3.11 4.19 -1.08 4.00
SINCE JAN 1 3.65 5.24 -1.59 4.72
SNOWFALL (IN)
YESTERDAY 0.0 T 2018 0.0 0.0 0.0
MONTH TO DATE 2.5 2.5 0.0 0.3
SINCE MAR 1 13.9 23.3 -9.4 16.0
SINCE JUL 1 29.6 71.6 -42.0 26.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 9 -6 10
MONTH TO DATE 356 377 -21 345
SINCE MAR 1 1562 1966 -404 1894
SINCE JUL 1 5739 7328 -1589 6909
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 9.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 4:00 AM
LOWEST 32 2:00 PM
AVERAGE 58
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 92 2014
MINIMUM TEMPERATURE (F) 41 28 1947
SUNRISE AND SUNSET
MAY 28 2026...........SUNRISE 5:32 AM MDT SUNSET 8:35 PM MDT
MAY 29 2026...........SUNRISE 5:31 AM MDT SUNSET 8:36 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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