Climatological Report (Monthly)
Issued by NWS
Issued by NWS
136
CXUS55 KTFX 011513
CLMGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
913 AM MDT SUN JUN 01 2025
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...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1886 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 100 05/28/1919
LOW 12 05/01/2009
HIGHEST 90 05/31 70 20 82
LOWEST 28 05/06 37 -9 21
AVG. MAXIMUM 69.5 64.6 4.9 62.5
AVG. MINIMUM 41.1 38.4 2.7 37.0
MEAN 55.3 51.5 3.8 49.8
DAYS MAX >= 90 1 0.1 0.9
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 3 6.0 -3.0
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.13 1953
MINIMUM 0.21
TOTALS 2.54 2.43 0.11 2.22
DAYS >= .01 10 11.3 -1.3
DAYS >= .10 7 6.1 0.9
DAYS >= .50 2 1.2 0.8
DAYS >= 1.00 0 0.3 -0.3
GREATEST
24 HR. TOTAL 1.31 05/04 TO 05/05
SNOWFALL (INCHES)
RECORDS
TOTAL 11.6 1989
24 HR TOTAL 11.6 05/28/1989 TO 05/29/1989
TOTALS T 1.9 -1.9 2.2
SINCE 7/1 47.2 65.8 -18.6 MM
SNOWDEPTH AVG. 0
DAYS >= TRACE 1 1.4 -0.4
DAYS >= 1.0 0 0.6 -0.6
GREATEST
SNOW DEPTH 0
24 HR TOTAL MM
DEGREE DAYS
HEATING TOTAL 309 422 -113 467
SINCE 7/1 7008 7526 -518 MM
COOLING TOTAL 14 3 11 0
SINCE 1/1 14 3 11 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.1
HIGHEST WIND SPEED/DIRECTION 43/260 DATE 05/11
HIGHEST GUST SPEED/DIRECTION 57/260 DATE 05/11
SKY COVER
AVERAGE SKY COVER 0.32
AVERAGE RH (PERCENT) 60
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 8
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 1
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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