Climatological Report (Monthly)
Issued by NWS

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CXUS55 KTFX 011805
CLMHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1202 PM MDT TUE SEP 1 2015

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

...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             105   08/24/1969
 LOW               28   08/25/1992
HIGHEST            98   08/14        85      13       96  08/11
                        08/13
                        08/01
LOWEST             41   08/23        47      -6       43  08/25
AVG. MAXIMUM     86.4              84.5     1.9     82.9
AVG. MINIMUM     53.3              52.2     1.1     54.9
MEAN             69.8              68.3     1.5     68.9
DAYS MAX >= 90     12               9.5     2.5       10
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.23   1974
 MINIMUM            T   1940
TOTALS           0.28              1.20   -0.92     2.11
DAYS >= .01         5               7.3    -2.3
DAYS >= .10         1               3.4    -2.4
DAYS >= .50         0               0.4    -0.4
DAYS >= 1.00        0               0.1    -0.1
GREATEST
 24 HR. TOTAL    0.18   08/14 TO 08/14

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS            0.0               0.3    -0.3      0.0
SINCE 7/1         0.0               0.3    -0.3
SNOWDEPTH AVG.      0
DAYS >= TRACE       0               0.1    -0.1
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   08/31 TO 08/31

DEGREE_DAYS
HEATING TOTAL      22                42     -20       47
 SINCE 7/1         37                69     -32       47
COOLING TOTAL     180               145      35      177
 SINCE 1/1        538               383     155      448
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.1
HIGHEST WIND SPEED/DIRECTION    36/190    DATE  08/14
HIGHEST GUST SPEED/DIRECTION    52/180    DATE  08/14

SKY COVER
AVERAGE SKY COVER           0.20

AVERAGE RH (PERCENT)     42

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       0     FOG W/VIS <= 1/4 MILE      0
HAZE                     13

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

&&

THE GENERALLY WARMER THAN NORMAL CONDITIONS EXPERIENCED OVER THE
SUMMER ACROSS CENTRAL MONTANA CONTINUED INTO AUGUST AS TEMPERATURES
WERE ONCE AGAIN ABOVE NORMAL. WITH THE WARMER TEMPERATURES...THE
METEOROLOGICAL SUMMER (JUN-AUG) WAS THE 5TH WARMEST ON RECORD AT
HELENA. AUGUST CAME IN WITH BELOW NORMAL PRECIPITATION AT HELENA AS
WELL. THE WARMER AND DRIER CONDITIONS IN AUGUST CAN BE ATTRIBUTED TO
AN UPPER LEVEL HIGH THAT REPEATEDLY BUILT BACK INTO THE WESTERN US.
THIS ALONG WITH SEVERAL FIRES IN THE REGION LEAD TO SEVERAL DAYS
WITH REDUCED VISIBILITY AND LOWER AIR QUALITY DUE TO SMOKE.
$$



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