438
CDUS45 KRIW 170730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT FRI APR 17 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 16 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 71 1:20 PM 80 1994 56 15 72
MINIMUM 26 11:58 PM 14 1951 28 -2 35
AVERAGE 49 42 7
PRECIPITATION (IN)
YESTERDAY 0.44 0.84 1976 0.04 0.40 T
MONTH TO DATE 0.66 0.67 -0.01 0.29
SINCE MAR 1 0.82 1.51 -0.69 1.62
SINCE JAN 1 1.36 2.56 -1.20 2.34
SNOWFALL (IN)
YESTERDAY 4.0 10.5 2013 0.3 3.7 0.0
MONTH TO DATE 5.3 6.3 -1.0 3.7
SINCE MAR 1 6.9 16.6 -9.7 11.7
SINCE JUL 1 22.6 64.9 -42.3 22.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 16 23 -7 11
MONTH TO DATE 309 386 -77 370
SINCE MAR 1 895 1293 -398 1219
SINCE JUL 1 5072 6655 -1583 6234
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 40 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 54 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 19.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
HEAVY SNOW
SNOW
LIGHT SNOW
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 10:00 PM
LOWEST 14 1:00 PM
AVERAGE 57
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 81 1994
MINIMUM TEMPERATURE (F) 28 15 1945
SUNRISE AND SUNSET
APRIL 17 2026.........SUNRISE 6:21 AM MDT SUNSET 7:51 PM MDT
APRIL 18 2026.........SUNRISE 6:19 AM MDT SUNSET 7:52 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page