September weather forecastMinneapolis, MN
September
Weather in September
September signals the commencement of the fall season in Minneapolis, Minnesota. With a reduction in average temperature to 71.4°F (21.9°C) from August's high, the city begins to cool. Waning daylight hours indicate the nearing end of the summer season. The increased wind speed introduces a fresh nip in the air, a characteristic of the impending winter. As the canopy of leaves changes colors, September paints a beautiful picture of the cityscape.Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 78.8°F (26°C) to a pleasant 71.4°F (21.9°C). An average low-temperature of 53.6°F (12°C) is noted during the nights in September.Humidity
The average relative humidity in September is 73%.Rainfall
In Minneapolis, Minnesota, during September, the rain falls for 8.5 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Minneapolis, during the entire year, the rain falls for 92.6 days and collects up to 8.94" (227mm) of precipitation.Snowfall
June through September are months without snowfall in Minneapolis.Daylight
The average length of the day in September in Minneapolis is 12h and 31min.On the first day of September in Minneapolis, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index in Minneapolis is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Minneapolis, MN
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.3°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in September
Minneapolis, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Minneapolis, MN
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Minneapolis, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Minneapolis, MN
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Minneapolis, MN
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in September
Minneapolis, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Minneapolis, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Minneapolis, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Minneapolis, MN
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (21.4 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Minneapolis, MN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Minneapolis, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Minneapolis, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
