September weather forecast
South Saint Paul, MN

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Weather in September

The first month of the autumn, September, is also an agreeable month in South Saint Paul, Minnesota, with an average temperature varying between 52.9°F (11.6°C) and 71.4°F (21.9°C).

Temperature

The onset of September brings a small shift in high-temperatures, falling from a moderately hot 78.4°F (25.8°C) in August to an agreeable 71.4°F (21.9°C). During September, South Saint Paul's temperature falls to a steady low-temperature average of 52.9°F (11.6°C).

Humidity

In South Saint Paul, the average relative humidity in September is 75%.

Rainfall

In South Saint Paul, in September, it is raining for 12.6 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 128.1 rainfall days, and 22.83" (580mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 31min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:53 pm CDT.

Sunshine

In South Saint Paul, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

September temperatures vary between a high-temperature of 71.4°F (21.9°C) and a low-temperature of 52.9°F (11.6°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 84.2°F (29°C).

What is the average humidity in September?

The average relative humidity in September is 75%.

How much does it rain in September?

In South Saint Paul, during September, the rain falls for 12.6 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in South Saint Paul in September?

In South Saint Paul, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does South Saint Paul have in September?

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

What time are sunrise and sunset in September in South Saint Paul?

On the first day of September, sunrise is at 6:35 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.

How long on average sun shines in September in South Saint Paul?

In September, the average sunshine duration is 8.7h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
South Saint Paul, MN

Average temperature in September - South Saint Paul, MN
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (80.6°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°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

Average pressure in September
South Saint Paul, MN

Average pressure in September - South Saint Paul, MN
  • Average pressure in September: 30"Hg

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

Average wind speed in September
South Saint Paul, MN

Average wind speed in September - South Saint Paul, MN
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in September
South Saint Paul, MN

Average humidity in September - South Saint Paul, MN
  • Average humidity in September: 75%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (72%).

Average rainfall in September
South Saint Paul, MN

Average rainfall in September - South Saint Paul, MN
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in September
South Saint Paul, MN

Average rainfall days in September - South Saint Paul, MN
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3 days).

Average snowfall in September
South Saint Paul, MN

Average snowfall in September - South Saint Paul, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
South Saint Paul, MN

Average snowfall days in September - South Saint Paul, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
South Saint Paul, MN

Average daylight in September / Average sunshine in September - South Saint Paul, 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 4min

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 6min).

Average sunshine days in September
South Saint Paul, MN

Average sunshine days in September - South Saint Paul, MN
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.4 days).

Average UV index in September
South Saint Paul, MN

Average UV index in September - South Saint Paul, 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).

Average cloud cover in September
South Saint Paul, MN

Average cloud cover in September - South Saint Paul, MN
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in September
South Saint Paul, MN

Average visibility in September - South Saint Paul, 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).

South Saint Paul, Minnesota, USA

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