209
CDUS45 KRIW 280728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT TUE APR 28 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 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 46 5:26 PM 81 1952 59 -13 74
1992
MINIMUM 26 6:42 AM 15 1984 30 -4 29
AVERAGE 36 45 -9
PRECIPITATION (IN)
YESTERDAY 0.05 0.68 1970 0.06 -0.01 0.00
MONTH TO DATE 1.22 1.23 -0.01 0.96
SINCE MAR 1 1.38 2.07 -0.69 2.29
SINCE JAN 1 1.92 3.12 -1.20 3.01
SNOWFALL (IN)
YESTERDAY MM 4.5 2005 0.3 MM 0.0
MONTH TO DATE 8.8 9.8 -1.0 7.7
SINCE MAR 1 10.4 20.1 -9.7 15.7
SINCE JUL 1 26.1 68.4 -42.3 26.2
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 29 20 9 13
MONTH TO DATE 548 625 -77 636
SINCE MAR 1 1134 1532 -398 1485
SINCE JUL 1 5311 6894 -1583 6500
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 22 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 10:00 PM
LOWEST 51 4:00 PM
AVERAGE 72
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 80 2000
2007
2018
MINIMUM TEMPERATURE (F) 31 13 1984
SUNRISE AND SUNSET
APRIL 28 2026.........SUNRISE 6:04 AM MDT SUNSET 8:03 PM MDT
APRIL 29 2026.........SUNRISE 6:02 AM MDT SUNSET 8:05 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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