810
CDUS45 KRIW 010729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT FRI MAY 01 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 30 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 55 1:32 PM 84 1992 60 -5 50
2021
MINIMUM 29 11:59 PM 18 1967 31 -2 33
AVERAGE 42 46 -4
PRECIPITATION (IN)
YESTERDAY T 0.92 1973 0.06 -0.06 0.41
MONTH TO DATE 1.28 1.41 -0.13 1.59
SINCE MAR 1 1.44 2.25 -0.81 2.92
SINCE JAN 1 1.98 3.30 -1.32 3.64
SNOWFALL (IN)
YESTERDAY 0.0 14.4 1973 0.2 -0.2 0.0
MONTH TO DATE 9.8 10.5 -0.7 7.7
SINCE MAR 1 11.4 20.8 -9.4 15.7
SINCE JUL 1 27.1 69.1 -42.0 26.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 23 19 4 23
MONTH TO DATE 620 684 -64 700
SINCE MAR 1 1206 1591 -385 1549
SINCE JUL 1 5383 6953 -1570 6564
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 14 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 4.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 2:00 AM
LOWEST 24 6:00 PM
AVERAGE 55
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 81 1959
MINIMUM TEMPERATURE (F) 32 17 2005
SUNRISE AND SUNSET
MAY 1 2026...........SUNRISE 6:00 AM MDT SUNSET 8:07 PM MDT
MAY 2 2026...........SUNRISE 5:58 AM MDT SUNSET 8:08 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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