824
CDUS45 KRIW 160821
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
221 AM MDT THU APR 16 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 15 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 66 4:08 PM 79 1962 56 10 73
MINIMUM 35 4:51 AM -3 1945 28 7 16
AVERAGE 51 42 9
PRECIPITATION (IN)
YESTERDAY T 0.47 1940 0.05 -0.05 0.00
MONTH TO DATE 0.22 0.63 -0.41 0.29
SINCE MAR 1 0.38 1.47 -1.09 1.62
SINCE JAN 1 0.92 2.52 -1.60 2.34
SNOWFALL (IN)
YESTERDAY 0.0 3.2 2000 0.4 -0.4 0.0
MONTH TO DATE 1.3 6.0 -4.7 3.7
SINCE MAR 1 2.9 16.3 -13.4 11.7
SINCE JUL 1 18.6 64.6 -46.0 22.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 14 23 -9 20
MONTH TO DATE 293 363 -70 359
SINCE MAR 1 879 1270 -391 1208
SINCE JUL 1 5056 6632 -1576 6223
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 35 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 20.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 54 5:00 AM
LOWEST 18 1:00 PM
AVERAGE 36
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 80 1994
MINIMUM TEMPERATURE (F) 28 14 1951
SUNRISE AND SUNSET
APRIL 16 2026.........SUNRISE 6:22 AM MDT SUNSET 7:50 PM MDT
APRIL 17 2026.........SUNRISE 6:21 AM MDT SUNSET 7:51 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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