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 00:00 · NOAA HRRR model

17 °C

Overcast

Feels like 15 °C

11.3 km/hforce 2

Next 12 h

  • 0017°
  • 0117°
  • 0216°
  • 0316°
  • 0416°
  • 0516°
  • 0616°
  • 0717°
  • 07:32Sunrise
  • 0817°
  • 0918°
  • 1021°
  • 1123°
  • 1225°

↓ 16°05:00↑ 25°12:00

Humidity
60 %
Dew point
10 °C
Gusts
19.7 km/h
Clouds
100 %
Pressure
1,024 hPa

Grid point 1.3 km away · 3.0 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
29
Fair

Index set by Ozone

Ozone
73.2µg/m³
PM2.5
7.3µg/m³
PM10
8.8µg/m³
Nitrogen dioxide
4.0µg/m³
Sulphur dioxide
0.7µg/m³
Carbon monoxide
124.0µg/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° → 29°

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

  • Today

    Overcast

    22°

    18°

  • Mon

    Light rain1 mm

    27°

    16°

  • Tue

    Clear sky10 %

    29°

    19°

  • Wed

    Partly cloudy22 %

    28°

    18°

  • Thu

    Mainly clear22 %

    28°

    20°

  • Fri

    Overcast

    28°

    19°

  • Sat

    Overcast

    29°

    23°

  • Sun

    Light drizzle1 mm

    26°

    22°

  • Mon

    Light drizzle2 mm

    27°

    23°

  • Tue

    Overcast

    26°

    20°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV0low
Sunrise
07:32
Daylight
11 h 25
Sunset
18:57

Radiation · 0.0 MJ/m²

Sea state

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

0.2 mperiod 8 s 86°

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 19.6 °C — -3.4 °C against the normal for 18 October, measured from 1940 to 2026. (1,290 obs.)

Portland climate — normals and trends →