


Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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225 CDUS45 KRIW 170046 CLIRIW CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 646 PM MDT THU OCT 16 2025 ................................... ...THE RIVERTON WY CLIMATE SUMMARY FOR OCTOBER 16 2025... VALID TODAY AS OF 0600 PM LOCAL TIME. CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1995 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 46 1:22 AM 77 2024 58 -12 77 MINIMUM 38 12:34 PM 19 1999 31 7 37 AVERAGE 42 45 -3 57 PRECIPITATION (IN) TODAY 0.40 0.67 1998 0.04 0.36 T MONTH TO DATE 1.43 0.56 0.87 T SINCE SEP 1 2.42 1.33 1.09 0.07 SINCE JAN 1 8.67 7.69 0.98 5.50 SNOWFALL (IN) TODAY MM 0.0 MONTH TO DATE T 0.0 SINCE SEP 1 T 0.0 SINCE JUL 1 T 0.0 SNOW DEPTH MM DEGREE DAYS HEATING TODAY 23 20 3 8 MONTH TO DATE 225 270 -45 110 SINCE SEP 1 322 475 -153 196 SINCE JUL 1 325 511 -186 214 COOLING TODAY 0 0 0 0 MONTH TO DATE 0 0 0 1 SINCE SEP 1 37 31 6 68 SINCE JAN 1 611 499 112 610 ................................................................... WIND (MPH) HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (20) HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (20) AVERAGE WIND SPEED 7.4 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 LOWEST 76 AVERAGE 88 .......................................................... THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 57 74 2003 2023 MINIMUM TEMPERATURE (F) 31 16 1999 SUNRISE AND SUNSET OCTOBER 16 2025.......SUNRISE 7:29 AM MDT SUNSET 6:29 PM MDT OCTOBER 17 2025.......SUNRISE 7:30 AM MDT SUNSET 6:27 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$