CXUS55 KRIW 011337 CLMGEY CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 637 AM MST THU JAN 01 2026 ................................... ...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 65 12/24/2025 LOW -36 12/22/2022 HIGHEST 65R 12/24 LOWEST 4 12/01 AVG. MAXIMUM 44.6 30.8 13.8 AVG. MINIMUM 20.9 7.9 13.0 MEAN 32.8 19.3 13.5 DAYS MAX >= 90 0 DAYS MAX <= 32 2 DAYS MIN <= 32 30 DAYS MIN <= 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 0.49 1999 MINIMUM T 2023 TOTALS 0.24 0.11 0.13 0.23 DAILY AVG. 0.01 0.00 0.01 DAYS >= .01 4 DAYS >= .10 0 DAYS >= .50 0 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 0.12 12/05 TO 12/06 STORM TOTAL 0.09 SNOWFALL (INCHES) TOTALS MM MM MM SINCE 7/1 MM MM MM SNOWDEPTH AVG. MM DAYS >= 1.0 MM DEGREE DAYS HEATING TOTAL 992 1415 -423 SINCE 7/1 2365 3194 -829 COOLING TOTAL 0 0 0 SINCE 1/1 791 744 47 .............................................................. WIND (MPH) AVERAGE WIND SPEED 5.8 RESULTANT WIND SPEED/DIRECTION 1/190 HIGHEST WIND SPEED/DIRECTION 53/290 DATE 12/17 HIGHEST GUST SPEED/DIRECTION 70/300 DATE 12/17 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.33 NUMBER OF DAYS FAIR 18 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 4 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 0 LIGHT RAIN 5 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 4 SLEET 0 FOG 6 FOG W/VIS <= 1/4 MILE 1 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$