554
CXUS55 KTFX 010912
CLMGTF

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
312 AM MDT THU OCT 01 2026

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

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1886 TO 2026

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           88   09/25         76      12       92
LOWEST            28   09/27         40     -12       37
AVG. MAXIMUM    72.1               71.7     0.4     80.4
AVG. MINIMUM    45.2               42.8     2.4     46.7
MEAN            58.7               57.2     1.5     63.5
DAYS MAX >= 90     0                1.8    -1.8
DAYS MAX <= 32     0                0.1    -0.1
DAYS MIN <= 32     1                2.0    -1.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.56   1941
 MINIMUM           T
TOTALS          1.00               1.33   -0.33     0.28
DAYS >= .01        6                7.1    -1.1
DAYS >= .10        3                3.4    -0.4
DAYS >= .50        0                0.8    -0.8
DAYS >= 1.00       0                0.1    -0.1
GREATEST
 24 HR. TOTAL   0.48   09/07 TO 09/07

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    196                258     -62       70
 SINCE 7/1       258                371    -113       MM
COOLING TOTAL     14                 25     -11       34
 SINCE 1/1       384                308      76       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
HIGHEST WIND SPEED/DIRECTION    60/250    DATE  09/02
HIGHEST GUST SPEED/DIRECTION    82/240    DATE  09/02

SKY COVER
AVERAGE SKY COVER           0.29

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               14     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      0
HAZE                      2

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

$$