Climatological Report (Monthly)
Issued by NWS
Issued by NWS
581 CXUS55 KTFX 010857 CLMHLN CLIMATE REPORT NATIONAL WEATHER SERVICE GREAT FALLS MT 157 AM MST MON JAN 01 2024 ................................... ...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1866 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 70 12/01/2021 LOW -40 12/30/1880 HIGHEST 64 12/05 35 29 53 12/27 LOWEST 5 12/26 9 -4 -35 12/22 AVG. MAXIMUM 41.6 32.6 9.0 27.7 AVG. MINIMUM 22.4 14.2 8.2 8.8 MEAN 32.0 23.4 8.6 18.2 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 6 13.2 -7.2 16 DAYS MIN <= 32 28 29.7 -1.7 29 DAYS MIN <= 0 0 4.5 -4.5 6 PRECIPITATION (INCHES) RECORD MAXIMUM 4.64 1880 MINIMUM T TOTALS 0.03 0.46 -0.43 0.69 DAYS >= .01 1 6.6 -5.6 DAYS >= .10 0 1.6 -1.6 DAYS >= .50 0 0.0 0.0 DAYS >= 1.00 0 0.0 0.0 GREATEST 24 HR. TOTAL 0.03 12/11 TO 12/11 SNOWFALL (INCHES) RECORDS TOTAL 102.8 1929 24 HR TOTAL 18.0 12/09/1906 TO 12/09/1906 TOTALS 0.6 7.7 -7.1 10.7 SINCE 7/1 14.5 16.4 -1.9 SNOWDEPTH AVG. T DAYS >= TRACE 5 5.2 -0.2 DAYS >= 1.0 0 2.2 -2.2 GREATEST SNOW DEPTH MM 24 HR TOTAL 0.5 12/23 TO 12/23 DEGREE DAYS HEATING TOTAL 1013 1290 -277 1443 SINCE 7/1 2574 3130 -556 MM COOLING TOTAL 0 0 0 0 SINCE 1/1 588 433 155 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 3.9 HIGHEST WIND SPEED/DIRECTION 30/250 DATE 12/02 HIGHEST GUST SPEED/DIRECTION 42/270 DATE 12/02 SKY COVER AVERAGE SKY COVER 0.37 AVERAGE RH (PERCENT) 65 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 0 LIGHT RAIN 1 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 5 SLEET 0 FOG 9 FOG W/VIS <= 1/4 MILE 5 HAZE 8 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$