September weather forecast
Chatfield, MN

Weather in September

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

Temperature

In September, the average high-temperature marginally drops, from a warm 76.8°F (24.9°C) in August, to an agreeable 70.5°F (21.4°C). In September, the average low-temperature is 51.8°F (11°C).

Humidity

In September, the average relative humidity is 80%.

Rainfall

In September, the rain falls for 13.2 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. Throughout the year, there are 137 rainfall days, and 24.53" (623mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In Chatfield, Minnesota, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Chatfield?

In Chatfield, the average relative humidity in September is 80%.

How many days does it rain in September in Chatfield?

In September, in Chatfield, the rain falls for 13.2 days. Throughout September, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Chatfield?

In Chatfield snow does not fall in June through September.

Does it snow in Chatfield in September?

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

What is the average length of the day in September in Chatfield?

The average length of the day in September in Chatfield, Minnesota, is 12.5h.

How many hours of sunshine does Chatfield have in September?

The average sunshine in September in Chatfield, Minnesota, is 8.8h.

What is the UV index reading in September in Chatfield?

In Chatfield, 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 the Sun's UV rays.

Average temperature in September
Chatfield, MN

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

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21°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 (8.1°F).

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Average pressure in September
Chatfield, MN

Average pressure in September - Chatfield, MN
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Chatfield, MN

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

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 (7.1mph).

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Average humidity in September
Chatfield, MN

Average humidity in September - Chatfield, MN
  • Average humidity in September: 80%

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in September
Chatfield, MN

Average rainfall in September - Chatfield, MN
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is June (4.45").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in September
Chatfield, MN

Average rainfall days in September - Chatfield, MN
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall in September
Chatfield, MN

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

The month with the highest snowfall is February (5.87").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Chatfield, MN

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

The month with the highest number of snowfall days is January (14.9 days).
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
Chatfield, MN

Average daylight in September / Average sunshine in September - Chatfield, MN
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.3h).

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Average sunshine days in September
Chatfield, MN

Average sunshine days in September - Chatfield, MN
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (8.6 days).

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Average UV index in September
Chatfield, MN

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

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in September
Chatfield, MN

Average cloud cover in September - Chatfield, MN
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in September
Chatfield, MN

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

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

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