September weather forecast
Philomath, OR

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Weather in September

September, the first month of the autumn in Philomath, is also an agreeable month, with an average temperature ranging between min 48.4°F (9.1°C) and max 72.3°F (22.4°C).

Temperature

September reveals a small adjustment in temperature, transitioning from an average high of a warm 79.7°F (26.5°C) in August to a pleasant 72.3°F (22.4°C). The nighttime temperature shows a significant divergence from the daytime highs, averaging at a frosty 48.4°F (9.1°C) in September.

Humidity

In Philomath, the average relative humidity in September is 76%.

Rainfall

In Philomath, Oregon, during September, the rain falls for 9.6 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 169.8 rainfall days, and 34.02" (864mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Philomath, Oregon, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:49 pm. On the last day of September, in Philomath, sunrise is at 7:11 am and sunset at 6:55 pm PDT.

Sunshine

In Philomath, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in Philomath, Oregon, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What are September temperatures in Philomath?

The high-temperature in Philomath during September is 72.3°F (22.4°C) and the low-temperature is 48.4°F (9.1°C).

What is the average humidity in September in Philomath?

The average relative humidity in September in Philomath, Oregon, is 76%.

How much does it rain in Philomath in September?

In Philomath, in September, during 9.6 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

When it does not snow in Philomath?

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

What is the average length of the day in September in Philomath?

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

When are sunrise and sunset in September in Philomath?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:49 pm. On the last day of the month, in Philomath, sunrise is at 7:11 am and sunset at 6:55 pm PDT.

How many hours of sunshine does Philomath have in September?

The average sunshine duration in September in Philomath is 8.7h.

What is the UV index reading in September in Philomath?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Philomath, OR

Average temperature in September - Philomath, OR
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (44.2°F).

  • Average low temperature in September: 48.4°F

The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).

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Average pressure in September
Philomath, OR

Average pressure in September - Philomath, 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).

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Average wind speed in September
Philomath, OR

Average wind speed in September - Philomath, OR
  • Average wind speed in September: 3.8mph

The windiest months (with the highest average wind speed) are March and April (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in September
Philomath, OR

Average humidity in September - Philomath, OR
  • Average humidity in September: 76%

The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are July and August (71%).

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Average rainfall in September
Philomath, OR

Average rainfall in September - Philomath, OR
  • Average rainfall in September: 1.46"

The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in September
Philomath, OR

Average rainfall days in September - Philomath, OR
  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.6 days).

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Average snowfall in September
Philomath, OR

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Philomath, OR

Average snowfall days in September - Philomath, 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 May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Philomath, OR
  • 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 36min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

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Average sunshine days in September
Philomath, OR

Average sunshine days in September - Philomath, OR
  • Average sunshine days in September: 18.4 days

The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is February (8.3 days).

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Average UV index in September
Philomath, OR

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

The months with the highest UV index are June and 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
Philomath, OR

Average cloud cover in September - Philomath, OR
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
Philomath, OR

Average visibility in September - Philomath, OR
  • Average visibility in September: 5mi

The months with the highest visibility are July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (4mi).

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Philomath, Oregon, USA

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