September weather forecast
Chaska, MN

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Weather in September

September, the first month of the autumn in Chaska, is also an agreeable month, with an average temperature fluctuating between 53.4°F (11.9°C) and 71.4°F (21.9°C).

Temperature

The average high-temperature shows a slight dip in September, from August's warm 78.4°F (25.8°C) to a pleasant 71.4°F (21.9°C). September brings an average low-temperature of 53.4°F (11.9°C) to Chaska.

Humidity

In Chaska, the average relative humidity in September is 74%.

Rainfall

In Chaska, in September, it is raining for 9.1 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Chaska, there are 97.7 rainfall days, and 9.61" (244mm) of precipitation is accumulated.

Snowfall

In Chaska, Minnesota, snow does not fall in May through September.

Daylight

In Chaska, Minnesota, the average length of the day in September is 12h and 31min.
On the first day of September in Chaska, sunrise is at 6:37 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:56 pm CDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In Chaska, Minnesota, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, a regular UV index of 4 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What are the temperatures in Chaska in September?

In September, in Chaska, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 53.4°F (11.9°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September in Chaska?

In September, the average relative humidity in Chaska, Minnesota, is 74%.

How many days does it rain in September in Chaska?

In Chaska, in September, it is raining for 9.1 days, with typically 0.75" (19mm) of accumulated precipitation.

When it does not snow in Chaska?

In Chaska, snow does not fall in May through September.

Does it snow in Chaska in September?

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

How many hours of daylight does Chaska have in September?

The average day length in September in Chaska, Minnesota, is 12h and 31min.

When are sunrise and sunset in September in Chaska?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:50 pm. On the last day of the month, in Chaska, sunrise is at 7:12 am and sunset at 6:56 pm CDT.

How many hours of sunshine does Chaska have in September?

In Chaska, Minnesota, the average sunshine duration in September is 8.8h.

What is the UV index reading in September in Chaska?

The average daily maximum UV index in September in Chaska is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from 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
Chaska, MN

Average temperature in September - Chaska, MN
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in September: 53.4°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

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Average pressure in September
Chaska, MN

Average pressure in September - Chaska, 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
Chaska, MN

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

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).

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Average humidity in September
Chaska, MN

Average humidity in September - Chaska, MN
  • Average humidity in September: 74%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (71%).

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Average rainfall in September
Chaska, MN

Average rainfall in September - Chaska, MN
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in September
Chaska, MN

Average rainfall days in September - Chaska, MN
  • Average rainfall days in September: 9.1 days

The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.4 days).

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Average snowfall in September
Chaska, MN

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

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Chaska, MN

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

The month with the highest number of snowfall days is January (11.8 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
Chaska, MN

Average daylight in September / Average sunshine in September - Chaska, 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 5min

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 6min).

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Average sunshine days in September
Chaska, MN

Average sunshine days in September - Chaska, MN
  • Average sunshine days in September: 18.6 days

The months with the most sunshine days are October, November and December (21.5 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index in September
Chaska, MN

Average UV index in September - Chaska, 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
Chaska, MN

Average cloud cover in September - Chaska, MN
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Chaska, MN

Average visibility in September - Chaska, 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).

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Chaska, Minnesota, USA

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