September weather forecast
Redwood Falls, MN

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Weather in September

The first month of the autumn, September, is also an agreeable month in Redwood Falls, Minnesota, with an average temperature fluctuating between 72.9°F (22.7°C) and 52.9°F (11.6°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 79.2°F (26.2°C) in August to an agreeable 72.9°F (22.7°C). Throughout the month of September, Redwood Falls witnesses an average temperature of 52.9°F (11.6°C).

Humidity

The average relative humidity in September is 71%.

Rainfall

In Redwood Falls, in September, during 9.5 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 98 rainfall days, and 14.61" (371mm) of precipitation is accumulated.

Snowfall

In Redwood Falls, snow does not fall in May through September.

Daylight

In Redwood Falls, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:02 pm CDT.

Sunshine

In Redwood Falls, the average sunshine in September is 9h.

UV index

In Redwood Falls, Minnesota, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Redwood Falls in September?

In September, the average high-temperature and low-temperature are 72.9°F (22.7°C) and 52.9°F (11.6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 86°F (30°C).

What is the average humidity in September in Redwood Falls?

In September, the average relative humidity in Redwood Falls is 71%.

How much does it rain in Redwood Falls in September?

In September, in Redwood Falls, Minnesota, the rain falls for 9.5 days. Throughout September, 1.3" (33mm) of precipitation is accumulated.

When it does not snow in Redwood Falls?

May through September are months without snowfall in Redwood Falls.

Does it snow in Redwood Falls in September?

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

How many hours of daylight does Redwood Falls have in September?

In Redwood Falls, Minnesota, the average day length in September is 12h and 30min.

What time are sunrise and sunset in September in Redwood Falls?

On the first day of September in Redwood Falls, sunrise is at 6:44 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:02 pm CDT.

How long on average sun shines in September in Redwood Falls?

In Redwood Falls, Minnesota, the average sunshine duration in September is 9h.

How high is the UV index in September in Redwood Falls?

In Redwood Falls, Minnesota, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Redwood Falls, MN

Average temperature in September - Redwood Falls, MN
  • Average high temperature in September: 72.9°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: 52.9°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).

Average pressure in September
Redwood Falls, MN

Average pressure in September - Redwood Falls, MN
  • Average pressure in September: 29.99"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Redwood Falls, MN

Average wind speed in September - Redwood Falls, MN
  • Average wind speed in September: 8.6mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).

Average humidity in September
Redwood Falls, MN

Average humidity in September - Redwood Falls, MN
  • Average humidity in September: 71%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is May (67%).

Average rainfall in September
Redwood Falls, MN

Average rainfall in September - Redwood Falls, MN
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in September
Redwood Falls, MN

Average rainfall days in September - Redwood Falls, MN
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is June (15.6 days).
The month with the least rainy days is February (1.3 days).

Average snowfall in September
Redwood Falls, MN

Average snowfall in September - Redwood Falls, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Redwood Falls, MN

Average snowfall days in September - Redwood Falls, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Redwood Falls, MN

Average daylight in September / Average sunshine in September - Redwood Falls, 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: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in September
Redwood Falls, MN

Average sunshine days in September - Redwood Falls, MN
  • Average sunshine days in September: 19 days

The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is June (12.9 days).

Average UV index in September
Redwood Falls, MN

Average UV index in September - Redwood Falls, 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
Redwood Falls, MN

Average cloud cover in September - Redwood Falls, MN
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Redwood Falls, MN

Average visibility in September - Redwood Falls, MN
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Redwood Falls, Minnesota, USA

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