976
CXUS55 KTFX 010854
CLMGTF

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
254 AM MDT WED OCT 01 2025

...................................

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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            102   09/03/2022
                       09/03/2022
 LOW              27   09/13/2016
HIGHEST           92   09/01         76      16       93
LOWEST            37   09/05         40      -3       30
AVG. MAXIMUM    80.4               71.7     8.7     77.8
AVG. MINIMUM    46.7               42.8     3.9     47.4
MEAN            63.5               57.2     6.3     62.6
DAYS MAX >= 90     2                1.8     0.2
DAYS MAX <= 32     0                0.1    -0.1
DAYS MIN <= 32     0                2.0    -2.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.56   1941
 MINIMUM           T
TOTALS          0.28               1.33   -1.05     1.80
DAYS >= .01        5                7.1    -2.1
DAYS >= .10        1                3.4    -2.4
DAYS >= .50        0                0.8    -0.8
DAYS >= 1.00       0                0.1    -0.1
GREATEST
 24 HR. TOTAL   0.20   09/15 TO 09/15

SNOWFALL (INCHES)
RECORDS
 TOTAL          19.3   1934
 24 HR TOTAL     6.1   09/28/1954 TO 09/28/1954
TOTALS           0.0                0.8    -0.8      0.0
SINCE 7/1        0.0                1.1    -1.1       MM
SNOWDEPTH AVG.     0
DAYS >= TRACE      0                0.2    -0.2
DAYS >= 1.0        0                0.1    -0.1
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL     70                258    -188      125
 SINCE 7/1       113                371    -258       MM
COOLING TOTAL     34                 25       9       59
 SINCE 1/1       333                308      25       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
HIGHEST WIND SPEED/DIRECTION    36/250    DATE  09/14
                                36/330          09/21
HIGHEST GUST SPEED/DIRECTION    49/250    DATE  09/14

SKY COVER
AVERAGE SKY COVER           0.14

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$