701 CDUS45 KRIW 010735 CLICPR CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 135 AM MDT WED OCT 01 2025 ................................... ...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 30 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 77 2:26 PM 88 1980 68 9 65 MINIMUM 50 3:28 AM 17 1985 37 13 32 AVERAGE 64 52 12 PRECIPITATION (IN) YESTERDAY 0.00 0.66 1982 0.04 -0.04 0.00 MONTH TO DATE 2.55 0.95 1.60 0.24 SINCE SEP 1 2.55 0.95 1.60 0.24 SINCE JAN 1 9.86 9.78 0.08 7.22 SNOWFALL (IN) YESTERDAY 0.0 6.6 1982 0.1 -0.1 0.0 MONTH TO DATE 0.0 1.5 -1.5 0.0 SINCE SEP 1 0.0 1.5 -1.5 0.0 SINCE JUL 1 0.0 1.5 -1.5 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 1 13 -12 16 MONTH TO DATE 113 213 -100 102 SINCE SEP 1 113 213 -100 102 SINCE JUL 1 123 258 -135 140 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 17 30 -13 63 SINCE SEP 1 17 30 -13 63 SINCE JAN 1 467 442 25 538 ................................................................... WIND (MPH) HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (230) HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION SW (220) AVERAGE WIND SPEED 15.6 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 69 3:00 AM LOWEST 30 2:00 PM AVERAGE 50 .......................................................... THE CASPER WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 67 87 1992 MINIMUM TEMPERATURE (F) 36 20 1985 SUNRISE AND SUNSET OCTOBER 1 2025.......SUNRISE 7:04 AM MDT SUNSET 6:46 PM MDT OCTOBER 2 2025.......SUNRISE 7:05 AM MDT SUNSET 6:45 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$