Climatological Report (Monthly)
Issued by NWS

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CXUS55 KTFX 021628 CCA
CLMHLN

CLIMATE REPORT...COR
NATIONAL WEATHER SERVICE GREAT FALLS MT
1025 AM MDT WED MAY 2 2018

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

...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              86   04/29/1992
                        04/25/1910
 LOW              -10   04/01/1936
HIGHEST            85   04/28        61      24       71  04/06
LOWEST             10   04/03        28     -18       22  04/11
AVG. MAXIMUM     55.1              57.8    -2.7     57.9
AVG. MINIMUM     30.0              32.1    -2.1     34.0
MEAN             42.5              44.9    -2.4     45.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               0.3     0.7        0
DAYS MIN <= 32     17              14.2     2.8       11
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.00   1975
 MINIMUM         0.01   1919
TOTALS           1.61              0.98    0.63     0.72
DAYS >= .01        12               8.7     3.3
DAYS >= .10         6               3.1     2.9
DAYS >= .50         0               0.3    -0.3
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.44   04/12 TO 04/12

SNOWFALL (INCHES)
RECORDS
 TOTAL           22.2   1880
 24 HR TOTAL     12.9   04/23/1960 TO 04/23/1960
TOTALS            6.1               3.7     2.4        T
SINCE 7/1        64.7              37.2    27.5
SNOWDEPTH AVG.      0
DAYS >= TRACE       9               2.9     6.1
DAYS >= 1.0         4               1.3     2.7
GREATEST
 SNOW DEPTH         3   04/06
 24 HR TOTAL      1.5   04/06 TO 04/06

DEGREE_DAYS
HEATING TOTAL     670               602      68      564
 SINCE 7/1       7670              7054     616     7077
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.5
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  04/08
HIGHEST GUST SPEED/DIRECTION    41/250    DATE  04/08

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       9
LIGHT SNOW                9     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      3
HAZE                      6


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

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