Climatological Report (Monthly)
Issued by NWS Duluth, MN

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
000
CXUS53 KDLH 011502
CLMINL


CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
947 AM CDT SUN OCT 1 2017

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

...THE INTERNATIONAL FALLS MN CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              95   09/07/1976
 LOW               19   09/15/2011
HIGHEST            84   09/12        MM      MM       76  09/11
                                                          09/04
                                                          09/03
LOWEST             31   09/30        MM      MM       33  09/14
AVG. MAXIMUM     67.3              65.4     1.9     67.4
AVG. MINIMUM     44.7              41.8     2.9     46.7
MEAN             56.0              53.6     2.4     57.1
DAYS MAX >= 90      0               0.1    -0.1        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               4.1    -2.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.36   1961
 MINIMUM         0.20   1897
TOTALS           3.07              2.99    0.08     3.33
DAILY AVG.       0.10              0.10    0.00     0.11
DAYS >= .01        15              11.9     3.1       14
DAYS >= .10         7               5.9     1.1        7
DAYS >= .50         1               1.7    -0.7        3
DAYS >= 1.00        0               0.7    -0.7        0
GREATEST
 24 HR. TOTAL    0.95   09/20 TO 09/20

DEGREE_DAYS
HEATING TOTAL     269               353     -84      238
 SINCE 7/1        480               534     -54      355
COOLING TOTAL       7                11      -4        7
 SINCE 1/1         86               192    -106      155
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.5
HIGHEST WIND SPEED/DIRECTION    30/320    DATE  09/04
HIGHEST GUST SPEED/DIRECTION    41/230    DATE  09/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       6
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      23     FOG W/VIS <= 1/4 MILE      2
HAZE                      3

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

$$

.SEPTEMBER 2017 WAS WARMER THAN NORMAL WITH ABOVE NORMAL
PRECIPITATION AT INTERNATIONAL FALLS MN...

THE AVERAGE TEMPERATURE FOR SEPTEMBER WAS 56.0 DEGREES WHICH WAS 2.4
DEGREES ABOVE THE NORMAL OF 53.6 DEGREES. THE HIGHEST TEMPERATURE
FOR THE MONTH WAS 84 DEGREES ON THE 12TH. THE LOWEST TEMPERATURE WAS
31 DEGREES ON THE 30TH. ONE DAILY TEMPERATURE RECORD WAS BROKEN FOR
THE MONTH. ON THE 22ND RECORD WARMEST LOW TEMPERATURE OF 59 DEGREES
WAS SET. THIS BROKE THE OLD RECORD OF 58 DEGREES SET IN 1920. TWELVE
DAYS HAD AVERAGE TEMPERATURES BELOW NORMAL.

SEPTEMBER 2017 WAS ABOVE NORMAL FOR PRECIPITATION WITH A TOTAL OF
3.07 INCHES OF PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 0.08
INCHES ABOVE THE NORMAL OF 2.99 INCHES. THE GREATEST AMOUNT OF
PRECIPITATION IN A 24 HOUR PERIOD OCCURRED ON THE 20TH WHEN 0.95
INCHES WAS RECORDED. AT LEAST A TRACE OF PRECIPITATION WAS RECORDED
ON 20 DAYS. AT LEAST 0.01 INCHES FELL ON 15 DAYS. AT LEAST 0.10
INCHES FELL ON 7 DAYS. AT LEAST 0.50 INCHES FELL ON 1 DAYS. ONE
DAILY PRECIPITATION RECORD WAS BROKEN THIS MONTH. ON THE 20TH A
RECORD RAINFALL OF 0.95 INCHES WAS SET. THIS BROKE THE OLD RECORD OF
0.70 INCHES SET IN 1967.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 6.5 MPH. THE WINDIEST DAY
FOR THE MONTH WAS ON THE 4TH WITH AN AVERAGE WIND OF 12.5 MPH. THE
HIGHEST SUSTAINED WIND OCCURRED ON THE 4TH WITH A SPEED OF 30 MPH
OUT OF THE NORTHWEST. A PEAK GUST OF 41 MPH WAS RECORDED ON THE 4TH
AND THE 20TH.

THERE WERE 269 HEATING DEGREE DAYS FOR THE MONTH WHICH WAS 84 BELOW
THE NORMAL OF 353. THIS BROUGHT THE SEASONAL TOTAL TO 480 WHICH WAS
54 BELOW THE NORMAL OF 534. THERE WERE 7 COOLING DEGREE DAYS FOR THE
MONTH WHICH WAS 4 BELOW THE NORMAL OF 11. THE SEASONAL TOTAL COOLING
DEGREE DAYS STANDS AT 86 WHICH IS 106 BELOW THE NORMAL OF 192. THE
HIGHEST SEA LEVEL PRESSURE READING FOR THE MONTH WAS 30.42 INCHES
REACHED ON THE 29TH AND THE LOWEST SEA LEVEL PRESSURE READING WAS
29.42 INCHES REACHED ON THE 20TH.

THE OUTLOOK FOR OCTOBER...NORMAL HIGHS BEGIN THE MONTH IN THE UPPER
50S AND COOL TO THE LOW 40S BY THE END OF THE MONTH. NORMAL LOWS
BEGIN THE MONTH IN THE MID 30S AND COOL TO THE MID 20S BY THE END OF
THE MONTH. NORMAL PRECIPITATION FOR OCTOBER IS 2.08 INCHES. NORMAL
SNOWFALL FOR OCTOBER IS 2.2 INCHES. THE LATEST CLIMATE PREDICTION
CENTER OUTLOOK INDICATES THAT ODDS ARE SLIGHTLY TILTED TOWARDS ABOVE
NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.

$$

WL


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.