Climatological Report (Monthly)
Issued by NWS Duluth, MN

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000
CXUS53 KDLH 051720
CLMDLH


CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1217 PM CDT MON JUN 5 2017

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

...THE DULUTH MN CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2017

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            75   05/27        MM      MM       92  05/06
LOWEST             32   05/07        MM      MM       28  05/15
                                                          05/14
AVG. MAXIMUM     59.9              62.2    -2.3     65.0
AVG. MINIMUM     40.7              40.6     0.1     41.3
MEAN             50.3              51.4    -1.1     53.2
DAYS MAX >= 90      0               0.0     0.0        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      1               4.2    -3.2        5
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.99   1879
 MINIMUM         0.15   1976
TOTALS           4.11              3.23    0.88     1.87
DAILY AVG.       0.13              0.10    0.03     0.06
DAYS >= .01        12              12.3    -0.3       13
DAYS >= .10         7               7.1    -0.1        8
DAYS >= .50         4               1.9     2.1        0
DAYS >= 1.00        1               0.5     0.5        0
GREATEST
 24 HR. TOTAL    1.40                            05/06 TO 05/06
                                                          05/05 TO 05/06
                                                          05/06 TO 05/06

SNOWFALL (INCHES)
RECORDS
 TOTAL            8.1   1954
TOTALS            0.8               0.4     0.4      0.1
SINCE 7/1        67.0              86.1   -19.1     81.4
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.1    -0.1        0
GREATEST
 SNOW DEPTH         0   MM                            -1  05/14
 24 HR TOTAL      0.8   05/01 TO 05/01

DEGREE_DAYS
HEATING TOTAL     446               426      20      370
 SINCE 7/1       8007              9265   -1258     8044
COOLING TOTAL       0                 4      -4        9
 SINCE 1/1          0                 4      -4        9
.......................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    31/060    DATE  05/01
HIGHEST GUST SPEED/DIRECTION    42/060    DATE  05/01

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

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       6
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                2     SLEET                      2
FOG                      14     FOG W/VIS <= 1/4 MILE      6
HAZE                      3

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

$$

.MAY 2017 WAS COOLER WITH ABOVE NORMAL PRECIPITATION AT DULUTH MN...

THE AVERAGE TEMPERATURE FOR MAY WAS 50.3 DEGREES WHICH WAS -1.1
DEGREES BELOW THE NORMAL OF 51.4 DEGREES MAKING THIS THE 60TH
WARMEST MAY IN STATION HISTORY TIED WITH THE YEARS 1960 AND 1895.
THE HIGHEST TEMPERATURE FOR THE MONTH WAS 75 DEGREES ON THE 27TH.
THE LOWEST TEMPERATURE WAS 32 DEGREES ON THE 7TH. NO DAILY
TEMPERATURE RECORDS WERE BROKEN FOR THE MONTH. ELEVEN DAYS HAD
AVERAGE TEMPERATURES BELOW NORMAL.

MAY 2017 WAS ABOVE NORMAL FOR PRECIPITATION WITH A TOTAL OF 4.11
INCHES OF PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 0.88 INCHES
ABOVE THE NORMAL OF 3.23 INCHES. THE GREATEST AMOUNT OF
PRECIPITATION IN A 24 HOUR PERIOD OCCURRED ON THE 16TH WHEN A RECORD
1.40 INCHES WAS RECORDED. AT LEAST A TRACE OF PRECIPITATION WAS
RECORDED ON 18 DAYS. AT LEAST 0.01 INCHES OF PRECIPITATION FELL ON
12 DAYS. AT LEAST 0.10 INCHES FELL ON 7 DAYS. AT LEAST 0.50 INCHES
FELL ON 4 DAYS.  THERE WAS 0.8 INCHES OF SNOW FOR THE MONTH WHICH IS
0.4 INCHES ABOVE THE NORMAL OF 0.4 INCHES. ONE DAILY PRECIPITATION
RECORD WAS BROKEN ON THE 16TH WHEN 1.40 INCHES FELL. THE PREVIOUS
RECORD WAS 0.86 INCHES SET BACK IN 1872.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 10.2 MPH. THE WINDIEST DAY
OF THE MONTH WAS ON THE 14TH AND 20TH WITH AN AVERAGE WIND OF 16.1
MPH. THE HIGHEST SUSTAINED WIND OCCURRED ON THE 1ST WITH A WIND FROM
THE NORTHEAST AT 31 MPH. A PEAK WIND GUST OF 42 MPH WAS RECORDED ON
THE 1ST. THERE WERE 446 HEATING DEGREE DAYS FOR THE MONTH WHICH WAS
20 ABOVE THE NORMAL OF 426. THIS BROUGHT THE SEASONAL TOTAL TO 8007
WHICH WAS 1258 BELOW THE NORMAL OF 9265. THERE WERE 0 COOLING DEGREE
DAYS FOR THE MONTH WHICH WAS 4 BELOW THE NORMAL OF 4. THE SEASONAL
TOTAL COOLING DEGREE DAYS STANDS AT 0 WHICH WAS 4 BELOW THE NORMAL
OF 4. THE HIGHEST SEA LEVEL PRESSURE FOR THE MONTH WAS 30.37 INCHES
REACHED ON THE 9TH AND THE LOWEST SEA LEVEL PRESSURE READING WAS
29.47 INCHES REACHED ON THE 1ST.

THE OUTLOOK FOR JUNE...NORMAL HIGHS START IN THE MID TO 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 LOW TO MID 50S AT THE END
OF THE MONTH. NORMAL PRECIPITATION FOR JUNE IS 4.23 INCHES.

$$

WM



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