Climatological Report (Monthly)
Issued by NWS Duluth, MN

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946
CXUS53 KDLH 041607
CLMDLH

CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1107 AM CDT THU SEP 04 2025

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

...THE DULUTH CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1870 TO 2025

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           86   08/07         MM      MM       90  08/26
LOWEST            40   08/26         MM      MM       51  08/10
AVG. MAXIMUM    74.1               75.8    -1.7     75.4
AVG. MINIMUM    56.1               55.2     0.9     57.0
MEAN            65.1               65.5    -0.4     66.2
DAYS MAX >= 90     0                0.5    -0.5        1
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          1.53               3.73   -2.20     3.48
DAILY AVG.      0.05               0.12   -0.07     0.11
DAYS >= .01        8               10.8    -2.8       13
DAYS >= .10        3                6.4    -3.4        6
DAYS >= .50        1                2.6    -1.6        2
DAYS >= 1.00       0                1.0    -1.0        1
GREATEST
 24 HR. TOTAL   0.59   08/31 TO 08/31

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2021
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL     66                 64       2       33
 SINCE 7/1       120                114       6       MM
COOLING TOTAL     77                 80      -3       77
 SINCE 1/1       220                233     -13       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
HIGHEST WIND SPEED/DIRECTION    29/210    DATE  08/16
HIGHEST GUST SPEED/DIRECTION    40/210    DATE  08/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.48
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       2
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      22     FOG W/VIS <= 1/4 MILE      3
HAZE                      8

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

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