Forest Grove Weather in September

During September, Forest Grove experiences moderate daytime temperatures of 18°C (64°F) and cooler nights around 12°C (54°F). Expect quite a bit of rainfall. Around 87 mm (3.4 in) is typical.

Rainfall in Forest Grove in September

Typically, about 12 days will experience rainfall, with an average of 87 mm (3.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Forest Grove in September

In September, Forest Grove gets moderate temperatures, with highs of 18°C (64°F). Nights cool to around 12°C (54°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

If you prefer enjoying temperate temperatures and rain-free days, January, February, March, April, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Forest Grove's climate page.

Forest Grove Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 38%  

Precipitation 87 mm (3.4 in)  

Rainy days 12 days  

What to Wear in Forest Grove in September

For Forest Grove in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.

What To Do in Forest Grove in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

6/10

Walking

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Forest Grove's climate page.

More climate data for Forest Grove

Temperature Rainfall

See the full Forest Grove climate overview or explore weather in Australia.