September weather forecast
Mendota Heights, MN

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Weather in September

The first month of the autumn, September, is also an agreeable month in Mendota Heights, Minnesota, with an average temperature ranging between min 53.2°F (11.8°C) and max 71.4°F (21.9°C).

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 78.8°F (26°C) in August to a pleasant 71.4°F (21.9°C). During September nights, Mendota Heights records an average temperature of 53.2°F (11.8°C).

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Mendota Heights, Minnesota, during September, the rain falls for 11.7 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Mendota Heights, during the entire year, the rain falls for 119.7 days and collects up to 21.77" (553mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September in Mendota Heights is 12h and 31min.
On the first day of September in Mendota Heights, sunrise is at 6:35 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

Sunshine

The average sunshine in September in Mendota Heights is 8.7h.

UV index

In September, the average daily maximum UV index in Mendota Heights is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 4 in September translates into these instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What is the usual temperature for Mendota Heights in September?

In September, in Mendota Heights, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 53.2°F (11.8°C). In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in September in Mendota Heights?

In September, the average relative humidity in Mendota Heights is 74%.

How many days does it rain in September in Mendota Heights?

In September, in Mendota Heights, Minnesota, the rain falls for 11.7 days. Throughout September, 1.81" (46mm) of precipitation is accumulated.

When it does not snow in Mendota Heights?

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

Does it snow in Mendota Heights in September?

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

How many hours of daylight does Mendota Heights have in September?

The average day length in September in Mendota Heights, Minnesota, is 12h and 31min.

What time are sunrise and sunset in September in Mendota Heights?

On the first day of September in Mendota Heights, sunrise is at 6:35 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

How long on average sun shines in September in Mendota Heights?

The average sunshine duration in September in Mendota Heights, Minnesota, is 8.7h.

What is the UV index reading in September in Mendota Heights?

The average daily maximum UV index in September in Mendota Heights is 4. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Mendota Heights, MN

Average temperature in September - Mendota Heights, MN
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

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Average pressure in September
Mendota Heights, MN

Average pressure in September - Mendota Heights, 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).

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Average wind speed in September
Mendota Heights, MN

Average wind speed in September - Mendota Heights, MN
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in September
Mendota Heights, MN

Average humidity in September - Mendota Heights, 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 and May (71%).

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Average rainfall in September
Mendota Heights, MN

Average rainfall in September - Mendota Heights, MN
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in September
Mendota Heights, MN

Average rainfall days in September - Mendota Heights, MN
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (1.8 days).

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Average snowfall in September
Mendota Heights, MN

Average snowfall in September - Mendota Heights, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.63").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Mendota Heights, MN

Average snowfall days in September - Mendota Heights, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13 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
Mendota Heights, MN

Average daylight in September / Average sunshine in September - Mendota Heights, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in September
Mendota Heights, MN

Average sunshine days in September - Mendota Heights, MN
  • Average sunshine days in September: 15.5 days

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

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Average UV index in September
Mendota Heights, MN

Average UV index in September - Mendota Heights, 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
Mendota Heights, MN

Average cloud cover in September - Mendota Heights, MN
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 31).

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Average visibility in September
Mendota Heights, MN

Average visibility in September - Mendota Heights, 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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Mendota Heights, Minnesota, USA

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