CDUS45 KRIW 120731 CLICPR CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1231 AM MST FRI DEC 12 2025 ................................... ...THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 11 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 60R 1:40 PM 59 1939 35 25 38 MINIMUM 25 11:20 PM -19 1985 15 10 25 AVERAGE 43 25 18 PRECIPITATION (IN) YESTERDAY 0.00 0.15 1984 0.02 -0.02 0.00 MONTH TO DATE 0.11 0.22 -0.11 0.01 SINCE DEC 1 0.11 0.22 -0.11 0.01 SINCE JAN 1 11.80 11.83 -0.03 9.13 SNOWFALL (IN) YESTERDAY 0.0 2.6 1984 0.4 -0.4 0.0 MONTH TO DATE 1.0 3.9 -2.9 T SINCE DEC 1 1.0 3.9 -2.9 T SINCE JUL 1 5.3 21.3 -16.0 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 22 40 -18 33 MONTH TO DATE 344 428 -84 345 SINCE DEC 1 344 428 -84 345 SINCE JUL 1 1770 2230 -460 1845 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 38 HIGHEST WIND DIRECTION SW (220) HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION SW (220) AVERAGE WIND SPEED 19.6 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 96 11:00 PM LOWEST 25 2:00 PM AVERAGE 61 .......................................................... THE CASPER WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 35 60 2014 MINIMUM TEMPERATURE (F) 15 -14 2000 SUNRISE AND SUNSET DECEMBER 12 2025......SUNRISE 7:28 AM MST SUNSET 4:32 PM MST DECEMBER 13 2025......SUNRISE 7:29 AM MST SUNSET 4:32 PM MST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$