Issaquah weather — 10-day forecast

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

Now

Reading from 20:00 · NOAA HRRR model

10 °C

Overcast

Feels like 8 °C

3.6 km/hforce 1

Next 12 h

  • 209°
  • 219°11 %
  • 228°13 %
  • 238°14 %
  • 008°13 %
  • 018°12 %
  • 028°13 %
  • 038°12 %
  • 048°11 %
  • 057°10 %
  • 067°11 %
  • 078°10 %
  • 07:33Sunrise
  • 088°

↑ 9°20:00↓ 7°05:00

Humidity
84 %
Dew point
7 °C
Gusts
7.9 km/h
Clouds
100 %
Pressure
1,015 hPa ↓

Grid point 1.5 km away · 3.0 km grid · elevation 148 m

Air quality

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

Reading from 17:00
18
Good

Index set by Ozone

Ozone
44.2µg/m³
PM2.5
7.9µg/m³
PM10
9.6µg/m³
Nitrogen dioxide
10.1µg/m³
Sulphur dioxide
2.7µg/m³
Carbon monoxide
152.0µg/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

10 days

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

1° → 18°

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

  • Today

    Partly cloudy

    14°

    8°

  • Mon

    Overcast

    16°

    7°

  • Tue

    Mainly clear

    17°

    6°

  • Wed

    Mainly clear

    18°

    4°

  • Thu

    Light drizzle78 %

    13°

    6°

  • Fri

    Partly cloudy

    13°

    4°

  • Sat

    Light rain18 mm

    8°

    6°

  • Sun

    Light rain17 mm

    7°

    6°

  • Mon

    Clear sky0 mm

    11°

    3°

  • Tue

    Clear sky

    9°

    1°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV0low
Sunrise
07:32
Daylight
10 h 43
Sunset
18:15

Radiation · 0.5 MJ/m²

Sea state

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

0.2 mperiod 2 s 349°

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

Data: ECMWF

Today in Issaquah the mean temperature will be 10.0 °C — +0.2 °C against the normal for 18 October, measured from 1940 to 2026. (1,290 obs.)

Issaquah climate — normals and trends →