Climatological Report (Monthly)
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CXUS55 KTFX 010816
CLMGTF


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
216 AM MDT SUN OCT 1 2017

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

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             100   09/04/1893
 LOW               10   09/24/1926
HIGHEST            94   09/02        76      18       93
LOWEST             29   09/23        40     -11       27
AVG. MAXIMUM     70.2              70.3    -0.1     68.6
AVG. MINIMUM     43.3              42.0     1.3     42.7
MEAN             56.7              56.1     0.6     55.6
DAYS MAX >= 90      4               1.1     2.9
DAYS MAX <= 32      0               0.1    -0.1
DAYS MIN <= 32      2               2.4    -0.4
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.56   1941
 MINIMUM            T   2012
                        1932
TOTALS           2.37              1.42    0.95     2.22
DAYS >= .01         7               7.8    -0.8
DAYS >= .10         3               3.8    -0.8
DAYS >= .50         2               0.8     1.2
DAYS >= 1.00        1               0.1     0.9
GREATEST
 24 HR. TOTAL    1.10   09/15 TO 09/15

SNOWFALL (INCHES)
RECORDS
 TOTAL           13.2   1934
 24 HR TOTAL      6.1   09/28/1954 TO 09/28/1954
TOTALS              T               1.2    -1.2      0.0
SINCE 7/1           T               1.5    -1.5        T
SNOWDEPTH AVG.      0
DAYS >= TRACE       1               0.8     0.2
DAYS >= 1.0         0               0.3    -0.3
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   09/22 TO 09/22

DEGREE_DAYS
HEATING TOTAL     285               286      -1      283
 SINCE 7/1        314               407     -93      384
COOLING TOTAL      47                21      26       10
 SINCE 1/1        456               297     159      252
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    29/210    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    41/210    DATE  09/19

SKY COVER
AVERAGE SKY COVER           0.30

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      1
HAZE                     11

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

$$



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