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 22:00 · NOAA HRRR model

22 °C

Mainly clear

Feels like 24 °C

8.4 km/hforce 2

Next 12 h

  • 2222°
  • 2321°
  • 0021°13 %
  • 0121°15 %
  • 0220°15 %
  • 0319°15 %
  • 0418°15 %
  • 0518°14 %
  • 05:38Sunrise
  • 0618°14 %
  • 0719°13 %
  • 0818°15 %
  • 0918°15 %
  • 1017°15 %

22°22:00 17°10:00

Humidity
96 %
Dew point
21 °C
Gusts
14.1 km/h
Clouds
15 %
Pressure
1,016 hPa
Storm
likely

Grid point 1.3 km away · 3.0 km grid · elevation 2 m

Air quality

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

Reading from 20:00
38
Fair

Index set by Ozone

Ozone
94.4µg/m³
PM2.5
3.4µg/m³
PM10
3.8µg/m³
Nitrogen dioxide
4.7µg/m³
Sulphur dioxide
0.5µg/m³
Carbon monoxide
212.0µg/m³
Dust (AOD)
0.00

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

10 days

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

16° → 31°

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

  • Today

    Mainly clear40 %

    25°

    19°

  • Sat

    Partly cloudy84 %

    21°

    17°

  • Sun

    Mainly clear84 %

    31°

    18°

  • Mon

    Mainly clear30 %

    25°

    20°

  • Tue

    Light rain42 %

    22°

    20°

  • Wed

    Overcast42 %

    24°

    20°

  • Thu

    Light drizzle0 mm

    21°

    19°

  • Fri

    Light drizzle1 mm

    28°

    20°

  • Sat

    Mainly clear

    25°

    17°

  • Sun

    Clear sky0 mm

    24°

    16°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV8high
Sunrise
05:37
Daylight
14 h 20
Sunset
19:57

Radiation · 9.4 MJ/m²

Sea state

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

0.3 mperiod 8 s 141°

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 21.6 °C — +2.1 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)

Portland climate — normals and trends