Portland
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Portland Weather in October

Portland in October averages 18°C (64°F) during the day and 8°C (46°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Portland in October

Rain is expected on roughly 14 days, totalling around 86 mm (3.4 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Portland in October

October in Portland brings moderate temperatures, with highs of 18°C (64°F) and nights around 8°C (46°F). Conditions are often most pleasant around the middle of the day. With lows around 8°C (46°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Portland in October

The area enjoys a moderate level of sunlight, with around 152 hours. It's a good balance between sunny and cloudy days.

Wind Speed in Portland in October

October sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.

Should you favor a climate that's both dry and comfortably warm, May, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Portland Temperature in October

Min Temperature
8°C (46°F)
Max Temperature
18°C (64°F)
Chance of Rain
47%
Precipitation
86 mm (3.4 in)
Rainy days
14 days
Humidity
78%
Windspeed
2 m/s (4 knots)
Sunshine
152 hours
Percentage Sunshine

Portland Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Portland - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Portland typically drop from around 21°C (70°F) at the start of October to approximately 14°C (57°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 11°C (52°F).

Average temperatures in October

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

Historical weather records for Portland in October

Browse day-by-day weather records for Portland spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Portland historical weather extremes in October

Our historical data for Portland spans 1976 to 2025, revealing these weather extremes.

  • The hottest October day on record in Portland reached 31°C (88°F) (October 5, 1980).
  • The lowest daytime temperature in October was 6°C (43°F), recorded on October 28, 1991.
  • The coldest night in October in Portland was on October 30, 1991, with a minimum of -2°C (28°F).

Best Places in the United States of America in October

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Portland in October

Comfortable temperatures call for an easy wardrobe in October. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Portland in October

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

  • Swimming
    6/10
  • Cycling
    6/10
  • Walking
    6/10
  • Barbeque
    6/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Portland 3-Day Forecast

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.