Climatological Report (Monthly)
Issued by NWS
Issued by NWS
793 CXUS55 KRIW 021806 CLMGEY CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1014 AM MST THU JAN 02 2025 ...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF DECEMBER 2024... ...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2024 WILL BE AVAILABLE IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO- WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW ...GREYBULL IN DECEMBER WAS WARMER AND WETTER THAN NORMAL.... THE AVERAGE TEMPERATURE FOR GREYBULL IN DECEMBER WAS 29 DEGREES WHICH WAS 9.7 DEGREES ABOVE NORMAL. IT WAS THE 1ST WARMEST DECEMBER SINCE RECORDS BEGAN IN 1998. THE PREVIOUS RECORD WAS 25.8 DEGREES IN 2023. THE WARMEST TEMPERATURE FOR THE MONTH WAS 53 DEGREES ON THE 8TH. THIS BROKE THE 2004 RECORD OF 47. THE 6TH HIGH OF 47 TIED 2003. THE 18TH HIT 50 AND BROKE THE 1999 RECORD OF 48. THE 19TH SAW 49 DEGREES AND BROKE 46 FROM 2004. THE 20TH HIGH OF 50 TIED 2020. THE COLDEST TEMPERATURE WAS 9 DEGREES ON THE 1ST AND 28TH. PRECIPITATION FOR THE MONTH WAS 0.23 INCHES...WHICH IS 209 PERCENT OF NORMAL. IT WAS THE 4TH WETTEST DECEMBER ON RECORD. THE WETTEST 24- HOUR PERIOD OCCURRED ON THE 26TH WITH 0.13 INCHES. THE 14TH HAD A TRACE OF PRECIPITATION AND TIED SEVERAL PREVIOUS YEARS. THE HIGHEST WIND GUST WAS 48 MPH FROM THE NORTH ON THE 29TH. ...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024... 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 63 12/11/2004 LOW -36 12/22/2022 HIGHEST 53 12/08 LOWEST 9 12/01 12/28 AVG. MAXIMUM 41.5 30.8 10.7 AVG. MINIMUM 16.5 7.9 8.6 MEAN 29.0 19.3 9.7 DAYS MAX >= 90 0 DAYS MAX <= 32 3 DAYS MIN <= 32 31 DAYS MIN <= 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 0.49 1999 MINIMUM T 2023 TOTALS 0.23 0.11 0.12 T DAILY AVG. 0.01 0.00 0.01 DAYS >= .01 4 DAYS >= .10 1 DAYS >= .50 0 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 0.13 12/26 TO 12/26 STORM TOTAL 0.13 DEGREE DAYS HEATING TOTAL 1109 1415 -306 SINCE 7/1 2504 3194 -690 COOLING TOTAL 0 0 0 SINCE 1/1 832 744 88 .............................................................. WIND (MPH) AVERAGE WIND SPEED 4.1 RESULTANT WIND SPEED/DIRECTION 1/300 HIGHEST WIND SPEED/DIRECTION 32/350 DATE 12/29 HIGHEST GUST SPEED/DIRECTION 48/360 DATE 12/29 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.29 NUMBER OF DAYS FAIR 20 NUMBER OF DAYS PC 8 NUMBER OF DAYS CLOUDY 3 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 1 LIGHT RAIN 2 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 7 SLEET 0 FOG 8 FOG W/VIS <= 1/4 MILE 2 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. LOOKING AHEAD TO JANUARY 2025. THE AVERAGE HIGH TEMPERATURE ON THE FIRST OF THE MONTH IS 29 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 7 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 30 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 0 DEGREES. THE AVERAGE MONTHLY PRECIPITATION IS 0.15 INCHES. $$