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Vancouver (WA)
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Weather in Vancouver, Washington for September 2025

Your guide to Vancouver weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Vancouver is slightly cooler than the historical average by -0.9 °F.

  • Expect cooler weather in the next days in Vancouver with the forecast suggesting a temperature of 23.5 °F, lower than the historical average.

  • In general, the average temperature in Vancouver at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °F by the end of September.

    • Rain 🌧️

  • Vancouver experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 47.3 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/12°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Vancouver Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Fog
27°
2
Cloudy
28°
3
Patchy rain possible
27°
4
Overcast
27°
5
Sunny
32°
6
Partly cloudy
28°
7
Cloudy
25°
8
Overcast
26°
9
Mist
26°
10
Sunny
24°
11
Overcast
20°
12
Cloudy
21°
13
Mist
24°
14
Patchy rain possible
20°
15
Overcast
24°
16
Sunny
32°
17
Sunny
28°
18
Partly cloudy
26°
19
Sunny
29°
20
Sunny
29°
21
Sunny
28°
22
Sunny
25°
23
Patchy rain possible
20°
24
Patchy rain possible
20°
25
Patchy rain possible
16°
26
Patchy rain possible
16°
27
Patchy rain possible
16°
28
Light rain shower
19°
29
Overcast
19°
30
Sunny
21°

Temperatures trend during September in Vancouver

See the weather trend as well as the moving average line

September weather in Vancouver day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Fog
Fog
 27° /14° 0.1 mm 6
Sept. 2 Cloudy
Cloudy
 28° /13° 0.1 mm 6
Sept. 3 Patchy rain possible
Patchy rain possible
 27° /15° 0.7 mm 6
Sept. 4 Overcast
Overcast
 27° /13° 0.5 mm 6
Sept. 5 Sunny
Sunny
 32° /15° 0 mm 8
Sept. 6 Partly cloudy
Partly cloudy
 28° /15° 0 mm 7
Sept. 7 Cloudy
Cloudy
 25° /15° 0 mm 6
Sept. 8 Overcast
Overcast
 26° /13° 3.2 mm 6
Sept. 9 Mist
Mist
 26° /13° 4.4 mm 6
Sept. 10 Sunny
Sunny
 24° /13° 0 mm 6
Sept. 11 Overcast
Overcast
 20° /12° 3.5 mm 4
Sept. 12 Cloudy
Cloudy
 21° /11° 0.2 mm 5
Sept. 13 Mist
Mist
 24° /10° 0 mm 6
Sept. 14 Patchy rain possible
Patchy rain possible
 20° /12° 1.1 mm 0.9
Sept. 15 Overcast
Overcast
 24° /13° 0 mm 1.4
Sept. 16 Sunny
Sunny
 32° /17° 0 mm 1.4
Sept. 17 Sunny
Sunny
 28° /13° 0 mm 1.3
Sept. 18 Partly cloudy
Partly cloudy
 26° /11° 0 mm 0
Sept. 19 Sunny
Sunny
 29° /11° 0 mm 5
Sept. 20 Sunny
Sunny
 29° /15° 0 mm 6
Sept. 21 Sunny
Sunny
 28° /13° 0 mm 5
Sept. 22 Sunny
Sunny
 25° /13° 0 mm 5
Sept. 23 Patchy rain possible
Patchy rain possible
 20° /14° 3.2 mm 4
Sept. 24 Patchy rain possible
Patchy rain possible
 20° /11° 2.5 mm 4
Sept. 25 Patchy rain possible
Patchy rain possible
 16° /10° 2.5 mm 3
Sept. 26 Patchy rain possible
Patchy rain possible
 16° /8° 3.9 mm 3
Sept. 27 Patchy rain possible
Patchy rain possible
 16° /8° 0.8 mm 3
Sept. 28 Light rain shower
Light rain shower
 19° /11° 0.8 mm 5
Sept. 29 Overcast
Overcast
 19° /8° 0 mm 4
Sept. 30 Sunny
Sunny
 21° /7° 0 mm 6
Next
Important Notice
Our weather forecast for Vancouver in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Vancouver forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Vancouver in September - FAQ

What are the expected maximum and minimum temperatures in Vancouver during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Vancouver during September?
In September, Vancouver can expect light to moderate rainfall, totaling 47.3 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Vancouver during September?
The average wind speed in Vancouver during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Vancouver

Explore the daily rainfall trends and prepare for Vancouvers September weather 💧

UV exposure in Vancouver during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Location coordinates Where is Vancouver?

Get accurate weather forecasts for Vancouver, located at latitude 45.639 and longitude -122.661. Stay updated with localized weather information tailored for Vancouver.

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