September weather forecast
Afton, MN

Share

Weather in September

September, the first month of the autumn in Afton, is still a pleasant month, with an average temperature fluctuating between 70.5°F (21.4°C) and 51.8°F (11°C).

Temperature

The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 77.4°F (25.2°C) in August to a pleasant 70.5°F (21.4°C). During September, the nighttime temperature in Afton averages to a cool 51.8°F (11°C).

Humidity

The average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 12.2 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. Throughout the year, there are 130.4 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 31min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:52 pm CDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Afton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Heed the precautions - It is counselled to guard against solar damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The high-temperature during September is 70.5°F (21.4°C) and the low-temperature is 51.8°F (11°C).

What is the average humidity in September?

In Afton, the average relative humidity in September is 78%.

How many days does it rain in September?

In September, the rain falls for 12.2 days. Throughout September, 2.09" (53mm) of precipitation is accumulated.

When it does not snow?

In Afton, Minnesota, snow does not fall in June through September.

Does it snow in September?

In Afton, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In September, the average day length is 12h and 31min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:34 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:52 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.6h.

What is the UV index reading in September?

In Afton, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Afton, MN

Average temperature in September - Afton, MN
  • Average high temperature in September: 70.5°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in September: 51.8°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in September
Afton, MN

Average pressure in September - Afton, MN
  • Average pressure in September: 30"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Afton, MN

Average wind speed in September - Afton, MN
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in September
Afton, MN

Average humidity in September - Afton, MN
  • Average humidity in September: 78%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (74%).

Average rainfall in September
Afton, MN

Average rainfall in September - Afton, MN
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September
Afton, MN

Average rainfall days in September - Afton, MN
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (2.8 days).

Average snowfall in September
Afton, MN

Average snowfall in September - Afton, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Afton, MN

Average snowfall days in September - Afton, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Afton, MN

Average daylight in September / Average sunshine in September - Afton, MN
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in September
Afton, MN

Average sunshine days in September - Afton, MN
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (9.6 days).

Average UV index in September
Afton, MN

Average UV index in September - Afton, MN
  • Average UV index in September: 4

The month with the highest UV index is 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
Afton, MN

Average cloud cover in September - Afton, MN
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in September
Afton, MN

Average visibility in September - Afton, 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).

Afton, Minnesota, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location