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Portland

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Portland Weather and climate

Data source:Meteostat
Update date:2025-09

Portland year round climate
  • Spring (March–May): Average 48–60°F, mild and rainy with occasional sunshine. Rainfall is higher in March–May, gradually decreasing as the season progresses. Popular activities: Hiking, exploring city parks, visiting museums. Suggested clothing: Light jacket, comfortable pants or jeans, raincoat or umbrella.
  • Summer (June–August): Average 65–74°F, warm and dry with sunny skies. Rainfall is very low in July and August. Popular activities: Outdoor picnics, cycling, hiking, water activities. Suggested clothing: Short-sleeved T-shirts, shorts, sandals, sunscreen and hat.
  • Autumn (September–November): Average 46–67°F, cool and pleasant with increasing rainfall. Temperatures drop more rapidly after October. Popular activities: Leaf peeping, winery visits, leisurely strolls. Suggested clothing: Long-sleeved shirts, light jacket, comfortable pants.
  • Winter (December–February): Average 41–43°F, cold and damp with higher rainfall and frequent overcast skies. Popular activities: Indoor museum visits, café hopping, shopping. Suggested clothing: Warm coat, sweater, scarf, gloves, and hat, waterproof jacket and rain boots.
Portland climatological average

Annual average temperature: approx. 56.3°F / Annual rainfall: approx. 978 mm / Summer humidity: 60%–70% / Rainiest month: December

Portland monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
41.9°F
151.7
February
43.7°F
80.7
March
48.4°F
85
April
52°F
107
May
60.1°F
60.3
June
65.8°F
48
July
73.8°F
2
August
74.1°F
10.3
September
67.8°F
19.7
October
58.8°F
74.7
November
46.6°F
142
December
43.3°F
197.3
Portland weather for the next seven days
11/5
Wednesday
Moderate rain
58.3°F/51.1°F
11/6
Thursday
Moderate rain
56.1°F/50.7°F
11/7
Friday
Moderate rain
52.3°F/45.8°F
11/8
Saturday
Sunny
55.1°F/42.3°F
11/9
Sunday
Sunny
56.9°F/46.7°F
11/10
Monday
Patchy rain nearby
58°F/44.9°F
11/11
Tuesday
Cloudy
55.2°F/48.8°F