Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS55 KTFX 011442 CLMHLN CLIMATE REPORT NATIONAL WEATHER SERVICE GREAT FALLS MT 842 AM MDT SUN OCT 01 2023 ................................... ...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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 102 09/07/2022 LOW 6 09/24/1926 HIGHEST 92 09/02 77 15 102 09/07 LOWEST 36 09/28 36 0 36 09/10 AVG. MAXIMUM 75.3 73.3 2.0 78.9 AVG. MINIMUM 48.5 44.6 3.9 49.5 MEAN 61.9 58.9 3.0 64.2 DAYS MAX >= 90 1 1.8 -0.8 7 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 2.70 0.96 1.74 1.95 DAYS >= .01 10 5.8 4.2 DAYS >= .10 5 2.7 2.3 DAYS >= .50 2 0.6 1.4 DAYS >= 1.00 1 0.1 0.9 GREATEST 24 HR. TOTAL 1.26 09/22 TO 09/22 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 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 121 210 -89 101 SINCE 7/1 125 273 -148 MM COOLING TOTAL 36 28 8 83 SINCE 1/1 588 433 155 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.3 HIGHEST WIND SPEED/DIRECTION 31/310 DATE 09/27 HIGHEST GUST SPEED/DIRECTION 42/280 DATE 09/27 SKY COVER AVERAGE SKY COVER 0.28 AVERAGE RH (PERCENT) 55 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 4 LIGHT RAIN 11 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 6 FOG W/VIS <= 1/4 MILE 1 HAZE 4 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$