Portland weather — 10-day forecast

Temperature, rain, wind and feels-like in Portland, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 01:00 · Meteo-France AROME 1.3 km model

17 °C

Partly cloudy

Feels like 16 °C

11.0 km/hforce 2

Next 12 h

  • 0117°
  • 0217°
  • 0317°
  • 0417°
  • 0517°
  • 05:48Sunrise
  • 0617°
  • 0717°
  • 0817°
  • 0919°
  • 1018°
  • 1119°
  • 1219°
  • 1319°

17°05:00 19°13:00

Humidity
77 %
Dew point
13 °C
Gusts
17.9 km/h
Clouds
54 %
Pressure
1,022 hPa

Grid point 0.4 km away · 1.3 km grid · elevation 5 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 01:00
28
Fair

Index set by Ozone

Ozone
70.6µg/m³
PM2.5
9.5µg/m³
PM10
14.2µg/m³
Nitrogen dioxide
5.7µg/m³
Sulphur dioxide
1.4µg/m³
Carbon monoxide
98.0µg/m³
Dust (AOD)
0.01

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

9 days

Each day's extremes and the chance of rain, out to the end of the run.

17° → 29°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Overcast

    20°

    17°

  • Sun

    Clear sky

    22°

    18°

  • Mon

    Mainly clear

    21°

    18°

  • Tue

    Mainly clear

    22°

    20°

  • Wed

    Mainly clear

    24°

    21°

  • Thu

    Mainly clear

    27°

    17°

  • Fri

    Partly cloudy

    29°

    19°

  • Sat

    Light rain8 mm

    24°

    20°

  • Sun

    Light drizzle1 mm

    21°

    18°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV7high
Sunrise
05:48
Daylight
14 h 55
Sunset
20:43

Radiation · 21.5 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

0.2 mperiod 3 s 253°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in Portland the mean temperature will be 18.5 °C — +2.1 °C against the normal for 8 August, measured from 1940 to 2026. (1,290 obs.)

Portland climate — normals and trends