September weather forecast
McMinnville, OR

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Weather in September

September signals the arrival of autumn in McMinnville, where the temperatures range from 50.5°F (10.3°C) to 73.4°F (23°C). Rainfall begins to increase, indicating the end of summer. Despite shorter days, the city still basks in a decent amount of sunshine. With gentle winds whispering through the falling leaves, the city starts to prepare for the cooler months ahead.

Temperature

September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a warm 81.1°F (27.3°C) in August to a still moderately hot 73.4°F (23°C). McMinnville's average nighttime temperature descends significantly from the day's peak in September, settling at a cool 50.5°F (10.3°C).

Humidity

In McMinnville, the average relative humidity in September is 72%.

Rainfall

In McMinnville, during September, the rain falls for 10.6 days and regularly aggregates up to 1.42" (36mm) of precipitation. In McMinnville, Oregon, during the entire year, the rain falls for 172.2 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

In McMinnville, snow does not fall in April through October.

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 7:49 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:54 pm PDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In McMinnville, Oregon, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 4 during September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

What is the usual temperature for McMinnville in September?

The high-temperature during September is 73.4°F (23°C) and the low-temperature is 50.5°F (10.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in September?

In McMinnville, the average relative humidity in September is 72%.

How much does it rain in September?

In McMinnville, in September, it is raining for 10.6 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow?

In McMinnville, snow does not fall in April through October.

How many hours of daylight does McMinnville have in September?

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

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:35 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm PDT.

How many hours of sunshine does McMinnville have in September?

In September, the average sunshine duration is 9.1h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
McMinnville, OR

Average temperature in September - McMinnville, OR
  • Average high temperature in September: 73.4°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (44.1°F).

  • Average low temperature in September: 50.5°F

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).

Average pressure in September
McMinnville, OR

Average pressure in September - McMinnville, OR
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in September
McMinnville, OR

Average wind speed in September - McMinnville, OR
  • Average wind speed in September: 4.1mph

The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity in September
McMinnville, OR

Average humidity in September - McMinnville, OR
  • Average humidity in September: 72%

The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (67%).

Average rainfall in September
McMinnville, OR

Average rainfall in September - McMinnville, OR
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.35").

Average rainfall days in September
McMinnville, OR

Average rainfall days in September - McMinnville, OR
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.6 days).

Average snowfall in September
McMinnville, OR

Average snowfall in September - McMinnville, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
McMinnville, OR

Average snowfall days in September - McMinnville, OR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
McMinnville, OR

Average daylight in September / Average sunshine in September - McMinnville, OR
  • 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: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in September
McMinnville, OR

Average sunshine days in September - McMinnville, OR
  • Average sunshine days in September: 17.7 days

The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (8.4 days).

Average UV index in September
McMinnville, OR

Average UV index in September - McMinnville, OR
  • 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 2).

Average cloud cover in September
McMinnville, OR

Average cloud cover in September - McMinnville, OR
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in September
McMinnville, OR

Average visibility in September - McMinnville, OR
  • Average visibility in September: 6mi

The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).

McMinnville, Oregon, USA

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