September weather forecast
Tillamook, OR

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A beach on the Oregon Coastline in Tillamook, below a unique scenery of seaside homes, large rocks, cliffs, and far hilly ranges
A beach on the Oregon Coastline in Tillamook, below a unique scenery of seaside homes, large rocks, cliffs, and far hilly ranges

Weather in September

Tillamook in September features the beginning of autumn with a descent into cooler conditions. Rainfall notably increases from 0.28" (7mm) in August to 0.71" (18mm), indicating the onset of the wet season. Chillier temperatures and shorter daylight hours mark October's weather, following the path led by September. Despite the onset of cooler weather, sunlight bathes Tillamook generously, marking this month as the beginning of stunning autumnal hues.

Temperature

At the start of September, Tillamook's average high-temperature reaches an enjoyable 65.1°F (18.4°C), subtly different from the preceding month. September brings an average low-temperature of 52.3°F (11.3°C) to Tillamook.

Humidity

In Tillamook, Oregon, the average relative humidity in September is 81%.

Rainfall

In Tillamook, during September, the rain falls for 6.8 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 137.4 rainfall days, and 15" (381mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

In September, the average length of the day in Tillamook is 12h and 31min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:52 pm. On the last day of September, in Tillamook, sunrise is at 7:13 am and sunset at 6:56 pm PDT.

Sunshine

The average sunshine in September in Tillamook is 9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in September in Tillamook?

The average high-temperature and low-temperature in Tillamook during September are 65.1°F (18.4°C) and 52.3°F (11.3°C) respectively.

What is the average humidity in September in Tillamook?

In Tillamook, Oregon, the average relative humidity in September is 81%.

How much does it rain in Tillamook in September?

In Tillamook, Oregon, in September, it is raining for 6.8 days, with typically 0.71" (18mm) of accumulated precipitation.

When it does not snow in Tillamook?

In Tillamook, snow does not fall in April through November.

How many hours of daylight does Tillamook have in September?

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

What time are sunrise and sunset in September in Tillamook?

On the first day of September in Tillamook, sunrise is at 6:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:56 pm PDT.

How long on average sun shines in September in Tillamook?

The average sunshine duration in September in Tillamook is 9h.

What is the UV index intensity in September in Tillamook?

In September, the average daily maximum UV index in Tillamook is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
Tillamook, OR

Average temperature in September - Tillamook, OR
  • Average high temperature in September: 65.1°F

The warmest month (with the highest average high temperature) is August (68.4°F).
The month with the lowest average high temperature is December (45.5°F).

  • Average low temperature in September: 52.3°F

The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (38.7°F).

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Average pressure in September
Tillamook, OR

Average pressure in September - Tillamook, OR
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).

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Average wind speed in September
Tillamook, OR

Average wind speed in September - Tillamook, OR
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in September
Tillamook, OR

Average humidity in September - Tillamook, OR
  • Average humidity in September: 81%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is May (80%).

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Average rainfall in September
Tillamook, OR

Average rainfall in September - Tillamook, OR
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is December (2.68").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in September
Tillamook, OR

Average rainfall days in September - Tillamook, OR
  • Average rainfall days in September: 6.8 days

The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (4.3 days).

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Average snowfall in September
Tillamook, OR

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

The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Tillamook, OR

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

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Tillamook, 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 0min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in September
Tillamook, OR

Average sunshine days in September - Tillamook, OR
  • Average sunshine days in September: 20.3 days

The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is March (11.4 days).

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Average UV index in September
Tillamook, OR

Average UV index in September - Tillamook, OR
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Tillamook, OR

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

The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
Tillamook, OR

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

The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

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Tillamook, Oregon, USA

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