656
CXUS55 KTFX 011530
CLMHLN
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
930 AM MDT SAT JUN 01 2024
...............................
..THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF MAY 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 95 05/28/1919
LOW 17 05/02/1954
HIGHEST 85 05/28 70 15 87 05/21
LOWEST 29 05/04 36 -7 36 05/10
AVG. MAXIMUM 64.8 66.4 -1.6 73.0
AVG. MINIMUM 41.1 41.5 -0.4 48.1
MEAN 53.0 53.9 -0.9 60.5
DAYS MAX >= 90 0 0.3 -0.3 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 3 3.4 -0.4 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 6.67 1927
MINIMUM 0.24
TOTALS 1.69 1.95 -0.26 1.21
DAYS >= .01 8 11.2 -3.2
DAYS >= .10 3 5.3 -2.3
DAYS >= .50 1 1.1 -0.1
DAYS >= 1.00 0 0.1 -0.1
GREATEST
24 HR. TOTAL 1.01 05/07 TO 05/08
SNOWFALL (INCHES)
RECORDS
TOTAL 13.9 1927
24 HR TOTAL 12.5 05/10/1967 TO 05/10/1967
TOTALS 0.5 0.1 0.4 0.0
SINCE 7/1 57.9 37.2 20.7
SNOWDEPTH AVG. T
DAYS >= TRACE 1 0.2 0.8
DAYS >= 1.0 0 0.0 0.0
GREATEST
SNOW DEPTH T 05/29
05/30
05/08
24 HR TOTAL MM
DEGREE DAYS
HEATING TOTAL 364 350 14 147
SINCE 7/1 6775 7357 -582 MM
COOLING TOTAL 0 7 -7 15
SINCE 1/1 0 7 -7 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.5
HIGHEST WIND SPEED/DIRECTION 40/270 DATE 05/17
HIGHEST GUST SPEED/DIRECTION 62/290 DATE 05/17
SKY COVER
AVERAGE SKY COVER 0.41
AVERAGE RH (PERCENT) 49
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 1
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 3 FOG W/VIS <= 1/4 MILE 1
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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