September weather forecast
Battle Ground, WA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Battle Ground, Washington, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 49.1°F (9.5°C).

Temperature

A mild shift in the average high-temperature occurs in September, reducing from a moderately hot 79.3°F (26.3°C) in August to a pleasant 71.6°F (22°C). Battle Ground reports a steady low-temperature average of 49.1°F (9.5°C) throughout September, revealing a large deviation from the daytime high.

Humidity

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

Rainfall

In Battle Ground, during September, the rain falls for 10.5 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Battle Ground, during the entire year, the rain falls for 177.9 days and collects up to 40.67" (1033mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:51 pm PDT.

Sunshine

The average sunshine in September in Battle Ground is 9h.

UV index

In Battle Ground, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 4 during September leads to these instructions:
Heed the precautions - It is counselled to guard against solar damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The average high-temperature and low-temperature during September are 71.6°F (22°C) and 49.1°F (9.5°C) respectively.

What is the average humidity in September?

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

How many days does it rain in September?

In Battle Ground, in September, it is raining for 10.5 days, with typically 2.01" (51mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 31min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:32 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:51 pm PDT.

How many hours of sunshine does Battle Ground have in September?

In Battle Ground, the average sunshine duration in September is 9h.

What is the UV index reading in September?

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

Average temperature in September - Battle Ground, WA
  • Average high temperature in September: 71.6°F

The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in September: 49.1°F

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).

Average pressure in September
Battle Ground, WA

Average pressure in September - Battle Ground, WA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

Average wind speed in September
Battle Ground, WA

Average wind speed in September - Battle Ground, WA
  • Average wind speed in September: 4mph

The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in September
Battle Ground, WA

Average humidity in September - Battle Ground, WA
  • Average humidity in September: 72%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (67%).

Average rainfall in September
Battle Ground, WA

Average rainfall in September - Battle Ground, WA
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is January (6.06").
The driest month (with the least rainfall) is July (0.35").

Average rainfall days in September
Battle Ground, WA

Average rainfall days in September - Battle Ground, WA
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (5.1 days).

Average snowfall in September
Battle Ground, WA

Average snowfall in September - Battle Ground, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Battle Ground, WA

Average snowfall days in September - Battle Ground, WA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Battle Ground, WA

Average daylight in September / Average sunshine in September - Battle Ground, WA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 9h and 0min

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

Average sunshine days in September
Battle Ground, WA

Average sunshine days in September - Battle Ground, WA
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (8.2 days).

Average UV index in September
Battle Ground, WA

Average UV index in September - Battle Ground, WA
  • 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
Battle Ground, WA

Average cloud cover in September - Battle Ground, WA
  • Average cloud cover in September: 36

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in September
Battle Ground, WA

Average visibility in September - Battle Ground, WA
  • Average visibility in September: 5mi

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

Battle Ground, Washington, USA

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