September weather forecast
Winthrop, MN

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Weather in September

September, the first month of the autumn in Winthrop, is also an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 52.7°F (11.5°C).

Temperature

September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a warm 78.6°F (25.9°C) in August to a pleasant 72.1°F (22.3°C). An average low-temperature of 52.7°F (11.5°C) is common during the nights of September.

Humidity

The average relative humidity in September is 74%.

Rainfall

In September, the rain falls for 11.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Winthrop, during the entire year, the rain falls for 119.3 days and collects up to 22.4" (569mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Winthrop, the average length of the day in September is 12h and 30min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:59 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The average high-temperature and low-temperature during September are 72.1°F (22.3°C) and 52.7°F (11.5°C) respectively.

What is the average humidity in September?

In September, the average relative humidity is 74%.

How much does it rain in September?

In Winthrop, Minnesota, in September, it is raining for 11.5 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow?

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

Does it snow in September?

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

How many hours of daylight does Winthrop have in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:59 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.9h.

What is the UV index reading in September in Winthrop?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe 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
Winthrop, MN

Average temperature in September - Winthrop, MN
  • Average high temperature in September: 72.1°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 (20.1°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7°F).

Average pressure in September
Winthrop, MN

Average pressure in September - Winthrop, 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 (29.87"Hg).

Average wind speed in September
Winthrop, MN

Average wind speed in September - Winthrop, 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).

Average humidity in September
Winthrop, MN

Average humidity in September - Winthrop, 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, May and October (70%).

Average rainfall in September
Winthrop, MN

Average rainfall in September - Winthrop, MN
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in September
Winthrop, MN

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

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (1.6 days).

Average snowfall in September
Winthrop, MN

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

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Winthrop, MN

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

The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Winthrop, 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 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in September
Winthrop, MN

Average sunshine days in September - Winthrop, MN
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in September
Winthrop, MN

Average UV index in September - Winthrop, 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).

Average cloud cover in September
Winthrop, MN

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

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in September
Winthrop, MN

Average visibility in September - Winthrop, 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 months with the lowest visibility are January, February and December (5mi).

Winthrop, Minnesota, USA

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