Climatological Report (Monthly)
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CXUS55 KTFX 011528
CLMGTF

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
928 AM MDT TUE JUN 01 2021

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

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1886 TO 2021

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           83   05/17         70      13       84
LOWEST            26   05/20         37     -11       26
                       05/21
                       05/22
AVG. MAXIMUM    60.7               64.6    -3.9     64.5
AVG. MINIMUM    36.6               38.4    -1.8     38.2
MEAN            48.6               51.5    -2.9     51.3
DAYS MAX >= 90     0                0.1    -0.1
DAYS MAX <= 32     1                0.0     1.0
DAYS MIN <= 32     6                6.0     0.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.13   1953
 MINIMUM        0.21
TOTALS          4.30               2.43    1.87     3.34
DAYS >= .01       12               11.3     0.7
DAYS >= .10       10                6.1     3.9
DAYS >= .50        4                1.2     2.8
DAYS >= 1.00       0                0.3    -0.3
GREATEST
 24 HR. TOTAL   1.02   05/25 TO 05/26

SNOWFALL (INCHES)
RECORDS
 TOTAL          11.6   1989
 24 HR TOTAL    11.6   05/28/1989 TO 05/29/1989
TOTALS           5.1                1.9     3.2      1.5
SINCE 7/1       70.6               65.8     4.8       MM
SNOWDEPTH AVG.     0
DAYS >= TRACE      5                1.4     3.6
DAYS >= 1.0        2                0.6     1.4
GREATEST
 SNOW DEPTH        4   05/22
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    502                422      80      419
 SINCE 7/1      7296               7526    -230       MM
COOLING TOTAL      3                  3       0        1
 SINCE 1/1         3                  3       0       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
HIGHEST WIND SPEED/DIRECTION    47/240    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    58/230    DATE  05/24

SKY COVER
AVERAGE SKY COVER           0.48

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               1
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      3
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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