September Climate Summaries for Duluth and International Falls

  .SEPTEMBER 2011 WAS WARMER AND DRIER THAN NORMAL AT DULUTH MN...

THE AVERAGE TEMPERATURE FOR SEPTEMBER WAS 56.2 DEGREES WHICH WAS 0.6

DEGREES WARMER THAN THE NORMAL OF 55.6 DEGREES TYING THIS FOR THE
51ST WARMEST SEPTEMBER IN STATION HISTORY. THE HIGHEST TEMPERATURE
FOR THE MONTH WAS 84 DEGREES ON THE 9TH AND 11TH. THE LOWEST
TEMPERATURE WAS 30 DEGREES ON THE 15TH. NO DAILY TEMPERATURE RECORDS
WERE BROKEN FOR THE MONTH.

SEPTEMBER 2011 WAS DRIER THAN NORMAL WITH A TOTAL OF 1.48 INCHES OF

PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 2.63 INCHES BELOW
THE NORMAL OF 4.11 INCHES. THIS TIES FOR THE 19TH DRIEST SEPTEMBER IN
RECORDED HISTORY. THE GREATEST AMOUNT OF PRECIPITATION IN A 24 HOUR
PERIOD OCCURRED ON THE 18TH WHEN 0.37 INCHES OF RAIN FELL. AT LEAST A
TRACE OF PRECIPITATION WAS REPORTED ON 12 DAYS. AT LEAST 0.01 INCHES
OF PRECIPITATION FELL ON 9 DAYS. AT LEAST 0.10 INCHES FELL ON 7
DAYS. A TRACE OF ICE PELLETS FELL ON THE 14TH THAT IS RECORDED AS
SNOW. THIS IS 0.1 INCHES BELOW THE NORMAL SNOWFALL OF 0.1 INCHES FOR
THE MONTH. ONE DAILY SNOWFALL RECORD WAS TIED IN THE MONTH OF
SEPTEMBER. A TRACE OF SNOW WAS REPORTED ON THE 14TH TYING THE RECORD
SET IN 1984.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 7.3 MPH. THE WINDIEST DAY

FOR THE MONTH WAS ON THE 29TH WITH AN AVERAGE WIND SPEED OF 15.2 MPH.
THE GREATEST SUSTAINED WINDS OCCURRED ON THE 12TH WITH A WIND FROM
THE NORTHWEST AT 31 MPH AND ON THE 29TH WITH A WIND FROM THE NORTH
AT 31 MPH. A PEAK GUST OF 45 MPH FROM THE NORTH WAS RECORDED ON THE
29TH. THERE WERE 288 HEATING DEGREE DAYS FOR THE MONTH WHICH WAS 10
BELOW THE NORMAL OF 298. THIS BROUGHT THE SEASONAL TOTAL TO 339 WHICH
WAS 108 BELOW THE NORMAL OF 447. THERE WERE 32 COOLING DEGREE DAYS
FOR THE MONTH WHICH WAS 18 ABOVE THE NORMAL OF 14. THE SEASONAL
TOTAL COOLING DEGREE DAYS WERE 305 WHICH WAS 101 ABOVE THE NORMAL OF
204. THE HIGHEST BAROMETRIC PRESSURE READING FOR THE MONTH WAS 30.47
INCHES REACHED ON THE 15TH AND THE LOWEST BAROMETRIC PRESSURE
READING WAS 29.55 INCHES REACHED ON THE 12TH.

THE OUTLOOK FOR OCTOBER...NORMAL HIGHS START IN THE UPPER 50S AND

COOL TO THE MID 40S AT THE END OF THE MONTH. NORMAL LOWS FOR THE
MONTH BEGIN IN THE UPPER 30S AND DROP TO THE UPPER 20S ON THE 31ST.
NORMAL PRECIPITATION FOR OCTOBER IS 2.85 INCHES. NORMAL SNOWFALL FOR
OCTOBER IS 2.3 INCHES. ABOVE NORMAL TEMPERATURES AND PRECIPITATION ARE
FORECASTED FOR OCTOBER.

 

.SEPTEMBER 2011 WAS COOLER AND DRIER THAN NORMAL AT INTERNATIONAL
FALLS MN...

THE AVERAGE TEMPERATURE FOR SEPTEMBER WAS 53.0 DEGREES WHICH WAS 0.6
DEGREES COOLER THAN THE NORMAL OF 53.6 DEGREES TYING THIS FOR THE
28TH COOLEST SEPTEMBER IN STATION HISTORY. THE HIGHEST TEMPERATURE
FOR THE MONTH WAS 86 DEGREES ON THE 8TH AND 10TH. THE LOWEST
TEMPERATURE WAS 19 DEGREES ON THE 15TH. FOUR DAILY TEMPERATURE
RECORDS WERE BROKEN FOR THE MONTH. THE LOW TEMPERATURE ON THE 14TH
WAS 27 DEGREES WHICH BROKE THE OLD RECORD OF 28 DEGREES SET IN 1964.
THE LOW TEMPERATURE OF 19 DEGREES ON THE 15TH BROKE THE OLD RECORD
OF 24 DEGREES SET IN 1964. THE LOW TEMPERATURE OF 23 DEGREES ON THE
16TH BROKE THE OLD RECORD OF 28 DEGREES SET IN 1959. THE HIGH
TEMPERATURE OF 82 DEGREES ON THE 28TH BROKE THE OLD RECORD OF 80
DEGREES SET IN 1922.

SEPTEMBER 2011 WAS DRIER THAN NORMAL WITH A TOTAL OF 1.65 INCHES OF
PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 1.34 INCHES BELOW
THE NORMAL OF 2.99 INCHES. THIS IS THE 20TH DRIEST SEPTEMBER
IN RECORDED HISTORY. THE GREATEST AMOUNT OF PRECIPITATION IN A 24
HOUR PERIOD OCCURRED ON THE 20TH TO THE 21ST WHEN 0.73 INCHES OF RAIN
FELL. AT LEAST A TRACE OF PRECIPITATION WAS REPORTED ON 8 DAYS. AT
LEAST 0.01 INCHES OF PRECIPITATION FELL ON 7 DAYS. AT LEAST 0.10
INCHES FELL ON 3 DAYS. AT LEAST 0.50 INCHES FELL ON 1 DAY. A TRACE
OF SNOW FELL ON THE 14TH. THIS IS 0.1 INCHES BELOW THE NORMAL
SNOWFALL OF 0.1 INCHES FOR THE MONTH. NO DAILY PRECIPITATION OR
SNOWFALL RECORDS WERE SET DURING THE MONTH.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 5.7 MPH. THE WINDIEST DAY
FOR THE MONTH WAS ON THE 29TH WITH AN AVERAGE WIND SPEED OF 16.6 MPH.
THE GREATEST SUSTAINED WINDS OCCURRED ON THE 13TH WITH A WIND FROM
THE NORTHWEST AT 36 MPH. A PEAK GUST OF 47 MPH FROM THE NORTHWEST
WAS ALSO RECORDED ON THE 13TH. THERE WERE 364 HEATING DEGREE DAYS
FOR THE MONTH WHICH WAS 11 ABOVE THE NORMAL OF 353. THIS BROUGHT THE
SEASONAL TOTAL TO 472 WHICH WAS 62 BELOW THE NORMAL OF 534. THERE
WERE 12 COOLING DEGREE DAYS FOR THE MONTH WHICH WAS 1 ABOVE THE
NORMAL OF 11. THE SEASONAL TOTAL COOLING DEGREE DAYS WERE 200 WHICH
WAS 8 ABOVE THE NORMAL OF 192. THE HIGHEST BAROMETRIC PRESSURE
READING FOR THE MONTH WAS 30.46 INCHES REACHED ON THE 15TH AND THE
LOWEST BAROMETRIC PRESSURE READING WAS 29.55 INCHES REACHED ON THE
12TH.

THE OUTLOOK FOR OCTOBER...NORMAL HIGHS START IN THE UPPER 50S AND
COOL TO THE LOWER 40S AT THE END OF THE MONTH. NORMAL LOWS FOR THE
MONTH BEGIN IN THE MID 30S AND DROP TO THE MID 20S ON THE 31ST.
NORMAL PRECIPITATION FOR OCTOBER IS 2.08 INCHES. NORMAL SNOWFALL FOR
OCTOBER IS 2.2 INCHES. ABOVE NORMAL TEMPERATURES AND PRECIPITATION ARE
FORECASTED FOR OCTOBER.



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