September weather forecast
Mankato, MN

The roads and large bridge over the river leading to downtown Mankato, Minnesota
The roads and large bridge over the river leading to downtown Mankato, Minnesota

Weather in September

The first month of the autumn, September, is still a pleasant month in Mankato, Minnesota, with an average temperature ranging between min 52.9°F (11.6°C) and max 72.5°F (22.5°C).

Temperature

In Mankato, the average high-temperature in September slightly decreases from a moderately hot 78.3°F (25.7°C) in August to an agreeable 72.5°F (22.5°C). In September, in Mankato, the average low-temperature is 52.9°F (11.6°C).

Humidity

In September, the average relative humidity in Mankato is 75%.

Rainfall

In Mankato, it is raining for 11.5 days, with typically 2.28" (58mm) of accumulated precipitation. In Mankato, during the entire year, the rain falls for 124.9 days and collects up to 23.11" (587mm) of precipitation.

Snowfall

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

Daylight

In Mankato, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm CDT.

Sunshine

The average sunshine in September in Mankato is 8.9h.

UV index

In Mankato, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Mankato?

The average high-temperature, in September, in Mankato, is 72.5°F (22.5°C), while the average low-temperature is 52.9°F (11.6°C).

What is the average humidity in September in Mankato?

The average relative humidity in September in Mankato is 75%.

How much does it rain in Mankato in September?

In Mankato, Minnesota, during September, the rain falls for 11.5 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Mankato?

June through September are months without snowfall in Mankato, Minnesota.

Does it snow in Mankato in September?

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

How many hours of daylight does Mankato have in September?

In Mankato, the average day length in September is 12h and 30min.

What time are sunrise and sunset in September in Mankato?

On the first day of September in Mankato, sunrise is at 6:39 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:59 pm CDT.

How long on average sun shines in September in Mankato?

In September, the average sunshine duration in Mankato, Minnesota, is 8.9h.

What is the UV index intensity in September in Mankato?

In Mankato, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mankato, MN

Average temperature in September - Mankato, MN
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (21.2°F).

  • Average low temperature in September: 52.9°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

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Average pressure in September
Mankato, MN

Average pressure in September - Mankato, 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).

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Average wind speed in September
Mankato, MN

Average wind speed in September - Mankato, MN
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in September
Mankato, MN

Average humidity in September - Mankato, MN
  • Average humidity in September: 75%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (70%).

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Average rainfall in September
Mankato, MN

Average rainfall in September - Mankato, MN
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is January (0.71").

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Average rainfall days in September
Mankato, MN

Average rainfall days in September - Mankato, MN
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall in September
Mankato, MN

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

The month with the highest snowfall is December (4.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Mankato, MN

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

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Mankato, MN
  • Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 27min).
The month with the shortest days is December (Average daylight: 8h and 56min).

  • Average sunshine in September: 8h and 54min

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 18min).

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Average sunshine days in September
Mankato, MN

Average sunshine days in September - Mankato, MN
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in September
Mankato, MN

Average UV index in September - Mankato, 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).

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Average cloud cover in September
Mankato, MN

Average cloud cover in September - Mankato, MN
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Mankato, MN

Average visibility in September - Mankato, MN
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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