Climatological Report (Monthly)
Issued by NWS Duluth, MN

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CXUS53 KDLH 021727
CLMDLH

CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1227 PM CDT WED SEP 2 2015

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

...THE DULUTH MN CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              97   08/01/1930
 LOW               32   08/27/1986
HIGHEST            93   08/14        MM      MM       83  08/02
LOWEST             42   08/26        MM      MM       48  08/27
AVG. MAXIMUM     75.4              74.3     1.1     72.9
AVG. MINIMUM     55.2              54.4     0.8     56.6
MEAN             65.3              64.3     1.0     64.7
DAYS MAX >= 90      3               0.3     2.7        0
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        10.31   1972
 MINIMUM         0.29   1930
TOTALS           4.09              3.70    0.39     4.63
DAILY AVG.       0.13              0.12    0.01     0.15
DAYS >= .01        12              10.8     1.2       13
DAYS >= .10         5               6.4    -1.4        7
DAYS >= .50         4               2.5     1.5        5
DAYS >= 1.00        1               1.1    -0.1        1
GREATEST
 24 HR. TOTAL    1.37                            08/10 TO 08/11


DEGREE_DAYS
HEATING TOTAL      81                86      -5       37
 SINCE 7/1         96               149     -53       77
COOLING TOTAL      96                66      30       38
 SINCE 1/1        278               190      88      170
..................................................

WIND (MPH)
AVERAGE WIND SPEED              9.3
HIGHEST WIND SPEED/DIRECTION    25/310    DATE  08/24
HIGHEST GUST SPEED/DIRECTION    40/070    DATE  08/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       5
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      3
HAZE                      5

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

$$

.AUGUST 2015 WAS WARMER AND WETTER THAN NORMAL AT DULUTH MN...

THE AVERAGE TEMPERATURE FOR AUGUST WAS 65.3 DEGREES WHICH WAS 1.0
DEGREES ABOVE THE NORMAL OF 64.3 DEGREES TYING THIS FOR THE 43RD
WARMEST AUGUST IN STATION HISTORY. THE HIGHEST TEMPERATURE FOR THE
MONTH WAS 93 DEGREES ON THE 14TH. THE LOWEST TEMPERATURE WAS 42
DEGREES ON THE 26TH. ONE DAILY TEMPERATURE RECORD WAS TIED FOR THE
MONTH. A RECORD HIGH TEMPERATURE OF 93 DEGREES WAS RECORDED ON THE
14TH TYING THE OLD RECORD SET IN 1961.

AUGUST 2015 WAS WETTER THAN NORMAL WITH A TOTAL OF 4.09 INCHES OF
PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 0.39 INCHES ABOVE THE
NORMAL OF 3.70 INCHES MAKING THIS THE 52ND WETTEST AUGUST IN
RECORDED HISTORY. THE GREATEST AMOUNT OF PRECIPITATION IN A 24 HOUR
PERIOD OCCURRED ON THE 6TH THROUGH THE 7TH WHEN 1.37 INCHES WAS
RECORDED. AT LEAST A TRACE OF PRECIPITATION WAS RECORDED ON 14 DAYS.
AT LEAST 0.01 INCHES OF PRECIPITATION FELL ON 12 DAYS. AT LEAST 0.10
INCHES FELL ON 5 DAYS. AT LEAST 0.50 INCHES FELL ON 4 DAYS. AT LEAST
1.00 INCHES FELL ON 1 DAY. NO DAILY PRECIPITATION RECORDS WERE SET
FOR THE MONTH.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 9.3 MPH. THE WINDIEST DAY
FOR THE MONTH WAS ON THE 24TH WITH AN AVERAGE WIND SPEED OF 15.1
MPH. THE HIGHEST SUSTAINED WINDS OCCURRED ON THE 18TH AND 19TH WITH
A WIND FROM THE EAST AT 25 MPH. HIGH SUSTAINED WINDS OF 25 MPH ALSO
OCCURRED ON THE 24TH WITH A WIND FROM THE NORTHWEST. A PEAK GUST OF
40 MPH FROM THE EAST WAS RECORDED ON THE 18TH AND ON THE 19TH. THERE
WERE 81 HEATING DEGREE DAYS FOR THE MONTH WHICH WAS 5 BELOW THE
NORMAL OF 86. THIS BROUGHT THE SEASONAL TOTAL TO 96 WHICH WAS 53
BELOW THE NORMAL OF 149. THERE WERE 96 COOLING DEGREE DAYS FOR THE
MONTH WHICH WAS 30 ABOVE THE NORMAL OF 66. THE SEASONAL TOTAL
COOLING DEGREE DAYS STANDS AT 278 WHICH IS 88 DEGREES ABOVE THE
NORMAL OF 190. THE HIGHEST BAROMETRIC READING FOR THE MONTH WAS
30.21 INCHES REACHED ON THE 26TH AND THE LOWEST BAROMETRIC PRESSURE
READING WAS 29.42 INCHES REACHED ON THE 19TH.

THE OUTLOOK FOR SEPTEMBER...NORMAL HIGHS START IN THE LOWER 70S AND
COOL TO THE UPPER 50S AT THE END OF THE MONTH. NORMAL LOWS FOR THE
MONTH START IN THE LOWER 50S AND COOL TO 40 DEGREES AT THE END OF
THE MONTH. NORMAL PRECIPITATION FOR SEPTEMBER IS 4.11 INCHES. ABOVE
AVERAGE TEMPERATURES AND ABOVE NORMAL PRECIPITATION ARE FORECASTED
FOR SEPTEMBER.

$$


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