September weather forecast
Forest Lake, MN

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Weather in September

The first month of the autumn, September, is also an agreeable month in Forest Lake, Minnesota, with an average temperature varying between 70.2°F (21.2°C) and 51.8°F (11°C).

Temperature

Forest Lake's progression into September involves a gentle drop in the average high-temperature, from a moderately hot 77.2°F (25.1°C) in August to a pleasant 70.2°F (21.2°C). In the month of September, the nighttime temperature dips to a steady average of 51.8°F (11°C).

Humidity

In Forest Lake, the average relative humidity in September is 77%.

Rainfall

In Forest Lake, Minnesota, in September, it is raining for 12 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 120.2 rainfall days, and 21.46" (545mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Forest Lake.

Daylight

The average length of the day in September in Forest Lake is 12h and 31min.
On the first day of September in Forest Lake, sunrise is at 6:34 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm CDT.

Sunshine

In Forest Lake, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Forest Lake, Minnesota, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are September temperatures in Forest Lake?

In September, the average high-temperature and low-temperature in Forest Lake, Minnesota, are 70.2°F (21.2°C) and 51.8°F (11°C) respectively.

What is the average humidity in September in Forest Lake?

In September, the average relative humidity in Forest Lake is 77%.

How many days does it rain in September in Forest Lake?

In September, in Forest Lake, Minnesota, the rain falls for 12 days. Throughout September, 1.77" (45mm) of precipitation is accumulated.

When it does not snow in Forest Lake?

June through September are months without snowfall in Forest Lake, Minnesota.

Does it snow in Forest Lake in September?

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

How many hours of daylight does Forest Lake have in September?

In Forest Lake, Minnesota, the average day length in September is 12h and 31min.

When is the sunrise / sunset in September in Forest Lake?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:48 pm. On the last day of the month, in Forest Lake, sunrise is at 7:09 am and sunset at 6:53 pm CDT.

How long on average sun shines in September in Forest Lake?

In September, the average sunshine duration in Forest Lake, Minnesota, is 8.5h.

What is the UV index reading in September in Forest Lake?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's 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
Forest Lake, MN

Average temperature in September - Forest Lake, MN
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (18.9°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).

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Average pressure in September
Forest Lake, MN

Average pressure in September - Forest Lake, 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).

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Average wind speed in September
Forest Lake, MN

Average wind speed in September - Forest Lake, 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 (6.6mph).

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Average humidity in September
Forest Lake, MN

Average humidity in September - Forest Lake, MN
  • Average humidity in September: 77%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in September
Forest Lake, MN

Average rainfall in September - Forest Lake, MN
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in September
Forest Lake, MN

Average rainfall days in September - Forest Lake, MN
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (2.3 days).

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Average snowfall in September
Forest Lake, MN

Average snowfall in September - Forest Lake, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is December (5.47").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Forest Lake, MN

Average snowfall days in September - Forest Lake, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (14.3 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
Forest Lake, MN

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in September
Forest Lake, MN

Average sunshine days in September - Forest Lake, MN
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is December (17.1 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in September
Forest Lake, MN

Average UV index in September - Forest Lake, 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).

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Average cloud cover in September
Forest Lake, MN

Average cloud cover in September - Forest Lake, MN
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in September
Forest Lake, MN

Average visibility in September - Forest Lake, 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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Forest Lake, Minnesota, USA

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