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
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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
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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.
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