September weather forecast
Sprague River, OR

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Weather in September

The first month of the autumn, September, is also an agreeable month in Sprague River, Oregon, with an average temperature fluctuating between 69.4°F (20.8°C) and 42.6°F (5.9°C).

Temperature

The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 76.8°F (24.9°C) to an agreeable 69.4°F (20.8°C). Sprague River observes a noteworthy temperature drop from the daily highs during September nights, with a mean temperature of 42.6°F (5.9°C).

Humidity

In Sprague River, the average relative humidity in September is 57%.

Rainfall

In Sprague River, in September, it is raining for 3.4 days, with typically 0.28" (7mm) of accumulated precipitation. In Sprague River, during the entire year, the rain falls for 60.4 days and collects up to 5.71" (145mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows in Sprague River. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, there are 42.2 snowfall days, and 14.76" (375mm) of snow is accumulated.

Daylight

In Sprague River, the average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm PDT.

Sunshine

In Sprague River, the average sunshine in September is 10.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 3 during September leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sprague River in September?

Sprague River in September has an average high-temperature of 69.4°F (20.8°C) and an average low-temperature of 42.6°F (5.9°C).

What is the average humidity in September?

In September, the average relative humidity is 57%.

How many days does it rain in September?

In Sprague River, during September, the rain falls for 3.4 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow.

How many hours of daylight does Sprague River have in September?

The average day length in September is 12h and 28min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 10.9h.

What is the UV index intensity in September?

In Sprague River, the average daily maximum UV index in September is 3. 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
Sprague River, OR

Average temperature in September - Sprague River, OR
  • Average high temperature in September: 69.4°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in September: 42.6°F

The month with the highest average low temperature is August (47.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).

Average pressure in September
Sprague River, OR

Average pressure in September - Sprague River, OR
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

Average wind speed in September
Sprague River, OR

Average wind speed in September - Sprague River, OR
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are March and April (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Sprague River, OR

Average humidity in September - Sprague River, OR
  • Average humidity in September: 57%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (54%).

Average rainfall in September
Sprague River, OR

Average rainfall in September - Sprague River, OR
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is December (0.79").
The driest months (with the least rainfall) are June and July (0.2").

Average rainfall days in September
Sprague River, OR

Average rainfall days in September - Sprague River, OR
  • Average rainfall days in September: 3.4 days

The month with the highest number of rainy days is April (8 days).
The month with the least rainy days is September (3.4 days).

Average snowfall in September
Sprague River, OR

Average snowfall in September - Sprague River, OR
  • Average snowfall in September: 0.24"

The month with the highest snowfall is December (3.54").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Sprague River, OR

Average snowfall days in September - Sprague River, OR
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is December (9.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Sprague River, OR

Average daylight in September / Average sunshine in September - Sprague River, OR
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Sprague River, OR

Average sunshine days in September - Sprague River, OR
  • Average sunshine days in September: 25.9 days

The month with the most sunshine days is September (25.9 days).
The month with the least sunshine days is April (18.4 days).

Average UV index in September
Sprague River, OR

Average UV index in September - Sprague River, OR
  • Average UV index in September: 3

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

Average cloud cover in September
Sprague River, OR

Average cloud cover in September - Sprague River, OR
  • Average cloud cover in September: 16

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in September
Sprague River, OR

Average visibility in September - Sprague River, OR
  • 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).

Sprague River, Oregon, USA

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