September weather forecast
Apple Valley, MN

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Weather in September

September in Apple Valley signifies the onset of autumn. The weather gradient between August and September introduces an average drop in daytime temperatures while nights become appreciably cooler. This time of year is distinguished by a distinct change in foliage color. There is an increase in rainfall, adding to the overall ambience of the season. The community looks forward to the fall season while bidding goodbye to summer.

Temperature

Apple Valley in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 78.4°F (25.8°C) to an agreeable 71.1°F (21.7°C). September sees the temperature falling to a mean low of 52.9°F (11.6°C).

Humidity

The average relative humidity in September in Apple Valley, Minnesota, is 75%.

Rainfall

In Apple Valley, during September, the rain falls for 5.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, in Apple Valley, there are 62.1 rainfall days, and 4.88" (124mm) of precipitation is accumulated.

Snowfall

In Apple Valley, snow does not fall in May through October.

Daylight

In Apple Valley, the average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in September in Apple Valley is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Apple Valley?

In September, in Apple Valley, the average high-temperature is 71.1°F (21.7°C), and the average low-temperature is 52.9°F (11.6°C).

What is the average humidity in September in Apple Valley?

The average relative humidity in September in Apple Valley, Minnesota, is 75%.

How many days does it rain in September in Apple Valley?

In Apple Valley, Minnesota, in September, it is raining for 5.5 days, with typically 0.35" (9mm) of accumulated precipitation.

When it does not snow in Apple Valley?

In Apple Valley, Minnesota, snow does not fall in May through October.

What is the average length of the day in September in Apple Valley?

In Apple Valley, the average day length in September is 12h and 31min.

When are sunrise and sunset in September in Apple Valley?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of the month, in Apple Valley, Minnesota, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

How long on average sun shines in September in Apple Valley?

The average sunshine duration in September in Apple Valley, Minnesota, is 8.8h.

What is the UV index intensity in September in Apple Valley?

In Apple Valley, the average daily maximum UV index in September is 4. A UV Index 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
Apple Valley, MN

Average temperature in September - Apple Valley, MN
  • Average high temperature in September: 71.1°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 (20.7°F).

  • Average low temperature in September: 52.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

Average pressure in September
Apple Valley, MN

Average pressure in September - Apple Valley, 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).

Average wind speed in September
Apple Valley, MN

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

The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in September
Apple Valley, MN

Average humidity in September - Apple Valley, MN
  • Average humidity in September: 75%

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April, May and October (72%).

Average rainfall in September
Apple Valley, MN

Average rainfall in September - Apple Valley, MN
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is June (0.79").
The driest month (with the least rainfall) is January (0.16").

Average rainfall days in September
Apple Valley, MN

Average rainfall days in September - Apple Valley, MN
  • Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is June (9.5 days).
The month with the least rainy days is February (0.8 days).

Average snowfall in September
Apple Valley, MN

Average snowfall in September - Apple Valley, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Apple Valley, MN

Average snowfall days in September - Apple Valley, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Apple Valley, MN

Average daylight in September / Average sunshine in September - Apple Valley, 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).

Average sunshine days in September
Apple Valley, MN

Average sunshine days in September - Apple Valley, MN
  • Average sunshine days in September: 22.1 days

The month with the most sunshine days is January (25.6 days).
The month with the least sunshine days is June (17.8 days).

Average UV index in September
Apple Valley, MN

Average UV index in September - Apple Valley, 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 and November (UV index 1).

Average cloud cover in September
Apple Valley, MN

Average cloud cover in September - Apple Valley, 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).

Average visibility in September
Apple Valley, MN

Average visibility in September - Apple Valley, 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).

Apple Valley, Minnesota, USA

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