Grayslake weather — 10-day forecast

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

Now

Reading from 20:00 · NOAA HRRR model

26 °C

Clear sky

Feels like 28 °C

11.0 km/hforce 2

Next 12 h

  • 2025°
  • 20:05Sunset
  • 2124°
  • 2224°
  • 2323°
  • 0022°
  • 0122°
  • 0222°
  • 0321°
  • 0422°
  • 0521°
  • 05:53Sunrise
  • 0620°
  • 0721°
  • 0821°11 %

25°20:00 20°06:00

Humidity
72 %
Dew point
21 °C
Gusts
21.6 km/h
Clouds
1 %
Pressure
1,014 hPa
Storm
likely

Grid point 0.5 km away · 3.0 km grid · elevation 242 m

Air quality

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

Reading from 19:00
37
Fair

Index set by Ozone

Ozone
93.2µg/m³
PM2.5
13.5µg/m³
PM10
14.4µg/m³
Nitrogen dioxide
7.5µg/m³
Sulphur dioxide
1.5µg/m³
Carbon monoxide
196.0µg/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.

19° → 30°

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

  • Today

    Mainly clear22 %

    29°

    23°

  • Sat

    Mainly clear18 %

    29°

    20°

  • Sun

    Light drizzle100 %

    30°

    19°

  • Mon

    Thunderstorm100 %

    27°

    22°

  • Tue

    Light drizzle100 %

    26°

    21°

  • Wed

    Mainly clear76 %

    26°

    21°

  • Thu

    Overcast

    26°

    19°

  • Fri

    Light drizzle1 mm

    24°

    21°

  • Sat

    Thunderstorm2 mm

    27°

    21°

  • Sun

    Mainly clear

    28°

    20°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV7high
Sunrise
05:52
Daylight
14 h 13
Sunset
20:05

Radiation · 11.0 MJ/m²

Sea state

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

0.2 mperiod 3 s 131°

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

Data: ECMWF

Today in Grayslake the mean temperature will be 26.6 °C — +3.9 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)

Grayslake climate — normals and trends