Best year time to visit Portland

General weather information about Portland

Average annual temperature is 10.3 °C

Absolute maximum temperature: 35.8 °C

Absolute minimum temperature: -26.1 °C

Number of sunny days: 194

Number of rainy days: 144

Number of snow days: 27

Average annual precipitation: 877 mm

Look at detailed online map of Portland

* Weather data for Portland United States is based on climate observations for 2023 year

Portland air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 7.8 10 19.6 25.7 31.8 32.9 33.1 35.8 33.7 28.4 18 12.6
Average daytime temperature (°C) 1.1 2.7 6 14.8 22.6 27.9 28.5 27.3 24.3 15.7 8.4 5.4
Average temperature (°C) -2.6 -2.6 0.7 8.6 15.4 21.1 22.9 21.8 19.1 12 3.5 1.8
Average night temperature (°C) -5.1 -6.7 -3.8 3.3 9.6 14.9 17.6 17.3 15.1 7.9 -0.1 -0.8
Absolute minimum temperature (°C) -26.1 -23.7 -14.9 -3.3 2.4 6.8 12.8 9.5 8 -2.9 -12.3 -7.8

Portland monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 9.9 11.2 12.7 14.1 15.1 15.4 15.3 14.5 13.2 11.8 10.3 9.2
Daylight mean duration (h) 9.4 10.5 11.9 13.4 14.7 15.3 15 13.9 12.5 11 9.7 9.1
Daylight minimum duration (h) 9.1 9.9 11.2 12.7 14.1 15.2 14.6 13.3 11.8 10.4 9.3 9
Sunshine mean duration (h) 5.4 7.5 7 8.2 11.2 12.2 12.7 11.3 9 7.8 7.5 5.6
Precipitation (mm) 51 75 85 113 46 54 80 106 92 89 34 52
Sunny days 12 16 13 17 20 21 15 16 14 13 22 15
Rainy days 12 8 9 13 11 9 16 15 16 16 6 13
Snow days 7 4 9 2 2 3

Portland - weather forecast by months

January February March April May June July August September October November December

Best time to visit Portland:

The best time to visit Portland during the most sunny months:

  • June — 12.2(h)
  • July — 12.7(h)
  • August — 11.3(h)

Months with the longest average daylight duration in Portland:

  • June — 15.3(h)

The largest precipitation sum in Portland is at

  • April — 113(mm)
  • August — 106(mm)
  • September — 92(mm)

Weather forecast in the closest to Portland admin centers