Climatological Report (Monthly)
Issued by NWS Duluth, MN

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CXUS53 KDLH 050310
CLMDLH

CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1010 PM CDT THU JUN 4 2015

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

...THE DULUTH MN CLIMATE SUMMARY FOR THE MONTH OF MAY 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              95   05/30/1939
 LOW               16   05/03/1907
HIGHEST            83   05/27        MM      MM       85  05/26
LOWEST             32   05/20        MM      MM       31  05/04
AVG. MAXIMUM     61.9              62.2    -0.3     62.0
AVG. MINIMUM     41.5              40.6     0.9     41.8
MEAN             51.7              51.4     0.3     51.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      1               4.2    -3.2        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.99   1879
 MINIMUM         0.14   1976
TOTALS           3.73              3.23    0.50     4.37
DAILY AVG.       0.12              0.10    0.02     0.14
DAYS >= .01        17              12.3     4.7       13
DAYS >= .10         8               7.1     0.9        6
DAYS >= .50         3               1.9     1.1        4
DAYS >= 1.00        0               0.5    -0.5        1
GREATEST
 24 HR. TOTAL    1.30                            05/31 TO 05/31
                                                          05/15 TO 05/15
                                                          05/15 TO 05/15

SNOWFALL (INCHES)
RECORDS
 MAXIMUM          8.1    1954
 MINIMUM          0.0    2012
TOTALS              T               0.4    -0.4        T
SINCE 7/1        49.2              86.1   -36.9    131.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.1    -0.1        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   05/19 TO 05/19

DEGREE_DAYS
HEATING TOTAL     409               426     -17      414
 SINCE 7/1       8982              9265    -283    10180
COOLING TOTAL       4                 4       0       18
 SINCE 1/1          4                 4       0       18
......................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
HIGHEST WIND SPEED/DIRECTION    36/090    DATE  05/10
HIGHEST GUST SPEED/DIRECTION    45/090    DATE  05/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       6
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                3     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      4
HAZE                      4

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

$$

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

THE AVERAGE TEMPERATURE FOR MAY WAS 51.7 DEGREES WHICH WAS 0.3
DEGREES WARMER THAN THE NORMAL OF 51.4 DEGREES TYING THIS FOR THE
36TH WARMEST MAY IN STATION HISTORY. THE HIGHEST TEMPERATURE FOR THE
MONTH WAS 83 DEGREES ON THE 27TH. THE LOWEST TEMPERATURE WAS 32
DEGREES ON THE 20TH. NO DAILY TEMPERATURE RECORDS WERE TIED OR
BROKEN FOR THE MONTH.

MAY 2015 WAS WETTER THAN NORMAL WITH A TOTAL OF 3.73 INCHES OF
PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 0.50 INCHES ABOVE THE
NORMAL OF 3.23 INCHES MAKING THIS THE 49TH WETTEST MAY IN RECORDED
HISTORY. THE GREATEST AMOUNT OF PRECIPITATION IN A 24 HOUR PERIOD
OCCURRED ON THE 10TH TO THE 11TH WHEN 1.30 INCHES WAS RECORDED. AT
LEAST A TRACE OF PRECIPITATION WAS RECORDED ON 19 DAYS. AT LEAST
0.01 INCH OF PRECIPITATION FELL ON 17 DAYS. AT LEAST 0.10 INCHES
FELL ON 8 DAYS. AT LEAST 0.50 INCHES FELL ON 3 DAYS. A TRACE OF SNOW
FELL FOR THE MONTH WHICH WAS 0.4 INCHES BELOW THE NORMAL OF 0.4
INCHES TYING THIS FOR THE 2ND LEAST SNOWIEST MAY IN STATION HISTORY.
NO DAILY PRECIPITATION OR SNOWFALL RECORDS WERE SET FOR THE MONTH.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 9.8 MPH. THE WINDIEST DAY
FOR THE MONTH WAS ON THE 10TH WITH AN AVERAGE WIND SPEED OF 19.7
MPH. THE HIGHEST SUSTAINED WINDS OCCURRED ON THE 10TH WITH A WIND
FROM THE EAST AT 36 MPH. A PEAK GUST OF 45 MPH FROM THE EAST WAS
RECORDED ON THE 10TH. THERE WERE 409 HEATING DEGREE DAYS FOR THE
MONTH WHICH WAS 17 BELOW THE NORMAL OF 426. THIS BROUGHT THE
SEASONAL TOTAL TO 8982 WHICH WAS 266 BELOW THE NORMAL OF 9265. THERE
WERE 4 COOLING DEGREE DAYS FOR THE MONTH WHICH WAS NORMAL. THE
SEASONAL TOTAL COOLING DEGREE DAYS STANDS AT 4 WHICH IS NORMAL. THE
HIGHEST BAROMETRIC PRESSURE READING FOR THE MONTH WAS 30.49 INCHES
REACHED ON THE 13TH AND THE LOWEST BAROMETRIC PRESSURE READING WAS
29.54 INCHES REACHED ON THE 17TH.

THE OUTLOOK FOR JUNE...NORMAL HIGHS START IN THE UPPER 60S AND WARM
TO THE MID 70S AT THE END OF THE MONTH. NORMAL LOWS FOR THE MONTH
START IN THE MID 40S AND WARM TO THE LOWER 50S AT THE END OF THE
MONTH. NORMAL PRECIPITATION FOR JUNE IS 4.23 INCHES. ABOVE NORMAL
TEMPERATURES AND NEAR NORMAL PRECIPITATION ARE FORECASTED FOR JUNE.

$$








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