Severe thunderstorms capable of very large hail, damaging wind gusts, and a few tornadoes will continue through tonight across parts of the central and southern Plains. Heavy rain will pose a threat for flash flooding across portions of central and coastal Texas. Thunderstorms may also cause isolated wind damage across the Southeast. Read More >
Duluth and International Falls August Climate Summary
and September Climate Outlook
THE DULUTH MN CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2016
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2016
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 97 08/05/1947
08/01/1930
LOW 32 08/27/1986
HIGHEST 85 08/23 MM MM 93 08/14
08/09
LOWEST 50 08/21 MM MM 42 08/26
08/07
AVG. MAXIMUM 77.0 74.3 2.7 75.4
AVG. MINIMUM 58.0 54.4 3.6 55.2
MEAN 67.5 64.3 3.2 65.3
DAYS MAX >= 90 0 0.3 -0.3 3
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 0.15 2008
TOTALS 4.96 3.70 1.26 4.09
DAILY AVG. 0.16 0.12 0.04 0.13
DAYS >= .01 12 10.8 1.2 12
DAYS >= .10 8 6.4 1.6 5
DAYS >= .50 3 2.5 0.5 4
DAYS >= 1.00 2 1.1 0.9 1
GREATEST
24 HR. TOTAL 1.72 08/29 TO 08/29
DEGREE_DAYS
HEATING TOTAL 25 86 -61 81
SINCE 7/1 54 149 -95 96
COOLING TOTAL 112 66 46 96
SINCE 1/1 267 190 77 278
..................................................
WIND (MPH)
AVERAGE WIND SPEED 8.0
HIGHEST WIND SPEED/DIRECTION 53/280 DATE 08/04
HIGHEST GUST SPEED/DIRECTION 66/280 DATE 08/04
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.40
NUMBER OF DAYS FAIR 13
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 76
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 5
LIGHT RAIN 13 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 15 FOG W/VIS <= 1/4 MILE 6
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
AUGUST 2016 WAS WARMER WITH ABOVE NORMAL PRECIPITATION AT DULUTH MN THE AVERAGE TEMPERATURE FOR AUGUST WAS 67.5 DEGREES WHICH WAS 3.2 DEGREES ABOVE THE NORMAL OF 64.3 DEGREES MAKING THIS THE 10TH WARMEST AUGUST IN STATION HISTORY. THE HIGHEST TEMPERATURE FOR THE MONTH WAS 85 DEGREES ON THE 9TH AND THE 23RD. THE LOWEST TEMPERATURE WAS 50 DEGREES ON THE 7TH AND THE 21ST. NO DAILY TEMPERATURE RECORDS WERE BROKEN FOR THE MONTH. SIX DAYS HAD AVERAGE TEMPERATURES BELOW NORMAL. AUGUST 2016 WAS ABOVE NORMAL FOR PRECIPITATION WITH A TOTAL OF 4.96 INCHES OF PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 1.26 INCHES ABOVE THE NORMAL OF 3.70 INCHES. THE GREATEST AMOUNT OF PRECIPITATION IN A 24 HOUR PERIOD OCCURRED ON THE 29TH WHEN 1.72 INCHES WAS RECORDED. AT LEAST A TRACE OF PRECIPITATION WAS RECORDED ON 15 DAYS. AT LEAST 0.01 INCHES OF PRECIPITATION FELL ON 12 DAYS. AT LEAST 0.10 INCHES FELL ON 8 DAYS. AT LEAST 0.50 INCHES FELL ON 3 DAYS. AT LEAST 1.00 INCHES FELL ON 2 DAYS. NO DAILY PRECIPITATION RECORDS WERE BROKEN FOR THE MONTH. THE AVERAGE WIND SPEED FOR THE MONTH WAS 8.0 MPH. THE WINDIEST DAY OF THE MONTH WAS ON THE 22ND AND 23RD WITH AN AVERAGE WIND OF 13.6 MPH. THE HIGHEST SUSTAINED WIND OCCURRED ON THE 4TH WITH A WIND FROM THE WEST AT 53 MPH. A PEAK WIND GUST OF 66 MPH WAS RECORDED ON THE 4TH. THERE WERE 25 HEATING DEGREE DAYS FOR THE MONTH WHICH WAS 61 BELOW THE NORMAL OF 86. THIS BROUGHT THE SEASONAL TOTAL TO 54 WHICH WAS 95 BELOW THE NORMAL OF 149. THERE WERE 112 COOLING DEGREE DAYS FOR THE MONTH WHICH WAS 46 ABOVE THE NORMAL OF 66. THE SEASONAL TOTAL COOLING DEGREE DAYS STANDS AT 267 WHICH WAS 77 ABOVE THE NORMAL OF 190. THE HIGHEST SEA LEVEL PRESSURE FOR THE MONTH WAS 30.26 INCHES REACHED ON THE 31ST AND THE LOWEST SEA LEVEL PRESSURE READING WAS 29.69 INCHES REACHED ON THE 20TH. |
THE INTERNATIONAL FALLS MN CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2016
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2016
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 95 08/18/2003
08/27/1991
08/18/1955
LOW 30 08/28/1982
HIGHEST 85 08/23 MM MM 89 08/15
08/03
LOWEST 37 08/21 MM MM 34 08/26
AVG. MAXIMUM 76.9 75.9 1.0 74.6
AVG. MINIMUM 50.8 50.7 0.1 51.0
MEAN 63.9 63.3 0.6 62.8
DAYS MAX >= 90 0 0.8 -0.8 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.2 -0.2 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.39 2002
MINIMUM T 2008
TOTALS 3.41 2.81 0.60 3.62
DAILY AVG. 0.11 0.09 0.02 0.12
DAYS >= .01 14 11.0 3.0 14
DAYS >= .10 7 5.8 1.2 8
DAYS >= .50 3 1.9 1.1 2
DAYS >= 1.00 0 0.5 -0.5 1
GREATEST
24 HR. TOTAL 1.01 08/01 TO 08/02
DEGREE_DAYS
HEATING TOTAL 74 111 -37 129
SINCE 7/1 117 181 -64 176
COOLING TOTAL 46 58 -12 68
SINCE 1/1 148 181 -33 163
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 5.4
HIGHEST WIND SPEED/DIRECTION 29/120 DATE 08/02
HIGHEST GUST SPEED/DIRECTION 37/120 DATE 08/02
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.30
NUMBER OF DAYS FAIR 21
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 76
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 7 RAIN 9
LIGHT RAIN 14 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 16 FOG W/VIS <= 1/4 MILE 3
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
AUGUST 2016 WAS WARMER THAN NORMAL WITH ABOVE
NORMAL PRECIPITATION AT INTERNATIONAL FALLS MN
THE AVERAGE TEMPERATURE FOR AUGUST WAS 63.9 DEGREES WHICH WAS 0.6 DEGREES
ABOVE THE NORMAL OF 63.3 DEGREES. THE HIGHEST TEMPERATURE FOR THE MONTH WAS
85 DEGREES ON THE 3RD AND THE 23RD. THE LOWEST TEMPERATURE WAS 37 DEGREES ON
THE 21ST. NO DAILY TEMPERATURE RECORDS WERE BROKEN FOR THE MONTH.
AUGUST 2016 WAS ABOVE NORMAL FOR PRECIPITATION WITH A TOTAL OF 3.41 INCHES
OF PRECIPITATION RECORDED FOR THE MONTH. THIS WAS 0.60 INCHES ABOVE THE
NORMAL OF 2.81 INCHES MAKING THIS THE 36TH WETTEST AUGUST IN STATION
HISTORY. THE GREATEST AMOUNT OF PRECIPITATION IN A 24 HOUR PERIOD OCCURRED
ON THE 1ST TO THE 2ND WHEN 1.01 INCHES WAS RECORDED. AT LEAST A TRACE OF
PRECIPITATION WAS RECORDED ON 16 DAYS. AT LEAST 0.01 OF AN INCH FELL ON 14
DAYS. AT LEAST 0.10 OF AN INCH FELL ON 7 DAYS. AT LEAST 0.50 OF AN INCH FELL
ON 3 DAYS. NO DAILY PRECIPITATION RECORDS WERE BROKEN FOR THE MONTH.
THE AVERAGE WIND SPEED FOR THE MONTH WAS 5.4 MPH. THE WINDIEST DAY FOR THE
MONTH WAS ON THE 4TH WITH AN AVERAGE WIND OF 11.4 MPH. THE HIGHEST SUSTAINED
WIND OCCURRED ON THE 2ND WITH A SPEED OF 29 MPH OUT OF THE EAST SOUTHEAST. A
PEAK GUST OF 37 MPH WAS RECORDED ON THE 2ND. THERE WERE 74 HEATING DEGREE
DAYS FOR THE MONTH WHICH WAS 37 BELOW THE NORMAL OF 111. THIS BROUGHT THE
SEASONAL TOTAL TO 117 WHICH WAS 64 BELOW THE NORMAL OF 181. THERE WERE 46
COOLING DEGREE DAYS FOR THE MONTH WHICH WAS 12 BELOW THE NORMAL OF 58. THE
SEASONAL TOTAL COOLING DEGREE DAYS STANDS AT 148 WHICH IS 33 BELOW THE
NORMAL OF 181. THE HIGHEST SEA LEVEL PRESSURE READING FOR THE MONTH WAS
30.29 INCHES REACHED ON THE 31ST AND THE LOWEST SEA LEVEL PRESSURE READING
WAS 29.60 INCHES REACHED ON THE 4TH.
|
September Climate Outlook
| Temperature Outlook | Precipitation Outlook |
.gif) |
.gif) |
NORMAL HIGHS AT DULUTH BEGIN IN THE LOW 70S AT THE BEGINNING OF THE MONTH AND COOL TO THE UPPER 50S BY THE END OF THE MONTH. NORMAL LOW FOR THE MONTH BEGIN IN THE LOW 50S AND COOL TO THE LOW 40S BY THE END OF THE MONTH. NORMAL PRECIPITATION FOR SEPTEMBER IS 4.11 INCHES. NORMAL HIGHS AT INTERNATIONAL FALLS BEGIN THE MONTH IN THE LOW 70S AND COOL TO THE UPPER 50S BY THE END OF THE MONTH. NORMAL LOWS BEGIN THE MONTH IN THE UPPER 40S AND COOL TO THE MID 30S BY THE END OF THE MONTH. NORMAL PRECIPITATION FOR SEPTEMBER IS 2.99 INCHES. FOR BOTH LOCATIONS THE LATEST CLIMATE PREDICTION CENTER (CPC) OUTLOOK INDICATES THAT THERE IS NO CLEAR INDICATION FOR ABOVE OR BELOW NORMAL TEMPERATURES AND THERE IS A CHANCE OF ABOVE NORMAL PRECIPITATION. |
|
Duluth, MN
|
Normals for the Month of September |
|
|
The Normal, Monthly Average Temperature (degrees F) |
55.6 |
|
The Normal, Monthly High Temperature (degrees F) |
65.0 |
|
The Normal, Monthly Low Temperature (degrees F) |
46.1 |
|
|
|
|
Normal Monthly Precipitation (inches) |
4.11 |
|
Normal Monthly Snowfall (inches) |
0.1 |
|
|
|
|
Normal number of days with Measurable Precipitation |
12.3 |
|
Normal number of days with snow depth of 1 inch or greater |
0.0 |
|
|
|
|
Normal Heating Degree Days |
298 |
|
Normal Cooling Degree Days |
14 |
|
|
|
|
Records for the Month of September |
|
|
Warmest Month (Monthly Average Temperature) |
62.6 in 1897 |
|
Coldest Month (Monthly Average Temperature) |
47.8 in 1974 |
|
Highest Observed Temperature (degrees F) |
95 on the 7th in 1976 |
|
Lowest Observed High Temperature (degrees F) |
38 on the 30th in 1985 |
|
Lowest Observed Temperature (degrees F) |
23 on the 20th in 1962, on the 26th 1965 & on the 22nd 1974 |
|
Highest Observed Low Temperature (degrees F) |
72 on the 11th in 1931 |
|
|
|
|
Greatest Monthly Precipitation (inches) |
11.52 in 1881 |
|
Least Monthly Precipitation (inches) |
0.19 in 1952 |
|
Greatest Daily Precipitation (inches) |
3.97 on the 6th in 1876 |
|
|
|
|
Greatest Monthly Snowfall (inches) |
2.4 in 1991 |
|
Least Monthly Snowfall (inches) |
0.0 |
|
Greatest Daily Snowfall (inches) |
2.4 on the 18th 1991 |
|
Greatest Measured Snow Depth (inches) |
T |
|
|
|
|
Greatest Measured Wind Speed (mph) |
60 on the 15th in 1991 |
International Falls, MN
|
Normals for the Month of September |
|
|
The Normal, Monthly Average Temperature (degrees F) |
53.6 |
|
The Normal, Monthly High Temperature (degrees F) |
65.4 |
|
The Normal, Monthly Low Temperature (degrees F) |
41.8 |
|
|
|
|
Normal Monthly Precipitation (inches) |
2.99 |
|
Normal Monthly Snowfall (inches) |
0.10 |
|
|
|
|
Normal number of days with Measurable Precipitation |
11.9 |
|
Normal number of days with snow depth of 1 inch or greater |
0.0 |
|
|
|
|
Normal Heating Degree Days |
353 |
|
Normal Cooling Degree Days |
11 |
|
|
|
|
Records for the Month of September |
|
|
Warmest Month (Monthly Average Temperature) |
62.7 in 1920 |
|
Coldest Month (Monthly Average Temperature) |
46.4 in 1965 |
|
Highest Observed Temperature (degrees F) |
96 on the 7th in 1906 |
|
Lowest Observed High Temperature (degrees F) |
35 on the 25th & 26th in 1926 |
|
Lowest Observed Temperature (degrees F) |
19 on the 15th in 2011 |
|
Highest Observed Low Temperature (degrees F) |
73 on the 8th in 2002 |
|
|
|
|
Greatest Monthly Precipitation (inches) |
7.36 in 1961 |
|
Least Monthly Precipitation (inches) |
0.20 in 1897 |
|
Greatest Daily Precipitation (inches) |
3.34 on the 1st in 1973 |
|
|
|
|
Greatest Monthly Snowfall (inches) |
2.0 in 1912 |
|
Least Monthly Snowfall (inches) |
0 in Multiple Years |
|
Greatest Daily Snowfall (inches) |
2.0 on the 26th in 1912 |
|
Greatest Measured Snow Depth (inches) |
0.0 |
|
|
|
|
Greatest Measured Wind Speed (mph) |
46 on the 27th in 1992 |
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