CDUS45 KRIW 160732 CLICPR CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1232 AM MST TUE DEC 16 2025 ................................... ...THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 15 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1939 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 59R 2:58 PM 57 1980 34 25 46 MINIMUM 40 6:57 AM -20 2008 14 26 21 AVERAGE 50 24 26 PRECIPITATION (IN) YESTERDAY T 0.52 2010 0.02 -0.02 T MONTH TO DATE 0.11 0.30 -0.19 0.01 SINCE DEC 1 0.11 0.30 -0.19 0.01 SINCE JAN 1 11.80 11.91 -0.11 9.13 SNOWFALL (IN) YESTERDAY MM 7.3 2010 0.4 MM T MONTH TO DATE 1.0 5.3 -4.3 T SINCE DEC 1 1.0 5.3 -4.3 T SINCE JUL 1 5.3 22.7 -17.4 T SNOW DEPTH MM DEGREE DAYS HEATING YESTERDAY 15 41 -26 31 MONTH TO DATE 438 590 -152 469 SINCE DEC 1 438 590 -152 469 SINCE JUL 1 1864 2392 -528 1969 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 467 443 24 538 ................................................................... WIND (MPH) HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION SW (210) HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (230) AVERAGE WIND SPEED 20.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 33 7:00 AM LOWEST 12 3:00 PM AVERAGE 23 .......................................................... THE CASPER WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 34 59 1980 MINIMUM TEMPERATURE (F) 14 -31 1964 SUNRISE AND SUNSET DECEMBER 16 2025......SUNRISE 7:31 AM MST SUNSET 4:33 PM MST DECEMBER 17 2025......SUNRISE 7:31 AM MST SUNSET 4:33 PM MST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$