Climatological Report (Monthly)
Issued by NWS
Issued by NWS
274 CXUS55 KTFX 011534 CLMHLN CLIMATE REPORT NATIONAL WEATHER SERVICE GREAT FALLS MT 934 AM MDT TUE OCT 01 2024 ................................... ...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1866 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 102 09/07/2022 LOW 6 09/24/1926 HIGHEST 95 09/01 77 18 92 09/02 LOWEST 37 09/21 36 1 36 09/28 09/30 AVG. MAXIMUM 78.7 73.3 5.4 75.3 AVG. MINIMUM 49.9 44.6 5.3 48.5 MEAN 64.3 58.9 5.4 61.9 DAYS MAX >= 90 5 1.8 3.2 1 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 1.7 -1.7 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 3.66 1882 MINIMUM 0.00 TOTALS 1.23 0.96 0.27 2.70 DAYS >= .01 7 5.8 1.2 DAYS >= .10 4 2.7 1.3 DAYS >= .50 1 0.6 0.4 DAYS >= 1.00 0 0.1 -0.1 GREATEST 24 HR. TOTAL 0.72 09/11 TO 09/12 SNOWFALL (INCHES) RECORDS TOTAL 14.2 1925 24 HR TOTAL 13.3 09/17/1957 TO 09/18/1957 TOTALS 0.0 0.2 -0.2 0.0 SINCE 7/1 0.0 0.5 -0.5 MM SNOWDEPTH AVG. 0 DAYS >= TRACE 0 0.0 0.0 DAYS >= 1.0 0 0.0 0.0 GREATEST SNOW DEPTH 0 24 HR TOTAL MM DEGREE DAYS HEATING TOTAL 83 210 -127 121 SINCE 7/1 95 273 -178 MM COOLING TOTAL 72 28 44 36 SINCE 1/1 590 433 157 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 6.5 HIGHEST WIND SPEED/DIRECTION 41/260 DATE 09/11 HIGHEST GUST SPEED/DIRECTION 55/260 DATE 09/11 SKY COVER AVERAGE SKY COVER 0.20 AVERAGE RH (PERCENT) 51 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 2 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 4 LIGHT RAIN 7 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 4 FOG W/VIS <= 1/4 MILE 0 HAZE 5 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$