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Grayslake, IL Weather
Current conditions
Observed at Chicago / Wheeling, Pal-Waukee Airport · 22 min ago
Forecast
10-day-
Saturday
Mostly sunny, with a high near 67.
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Saturday Night
Mostly cloudy, with a low around 50.
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Sunday
Partly sunny, with a high near 69.
National Weather Service forecast updated 4 days ago.
Hourly
Hourly forecast- Now54°
- 10 AM57°
- 11 AM60°
- 12 PM62°
- 1 PM64°
- 2 PM65°
- 3 PM66°
- 4 PM66°
- 5 PM65°
- 6 PM63°
- 7 PM61°
- 8 PM59°
- 9 PM57°
- 10 PM56°
- 11 PM55°
- Sun12 AM54°
- 1 AM54°
- 2 AM53°
- 3 AM53°
- 4 AM52°
- 5 AM51°
- 6 AM50°
- 7 AM51°
- 8 AM53°
10-day forecast
Details- TonightOct 19Areas Of Fog41°
- TueOct 20Areas Of Fog then Sunny41°67°
- WedOct 21Areas Of Fog then Mostly Sunny45°71°
- ThuOct 22Sunny48°69°
- FriOct 23Sunny47°66°
- TodayOct 24Mostly Sunny50°67°
- SunOct 25Partly Sunny48°69°
- MonOct 26Mostly Sunny then Slight Chance Rain Showers15%64°
- TueOct 27Light showers0.11 in44°52°
- WedOct 28Cloudy40°51°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news in Illinois
More weather news- Capitol Fax.com - Your Illinois News Radar » Good morning!
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Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- SatModerate
- SunModerate
- MonModerate
Lake County, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyKenosha Wwtp, records since 1944. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Elgin 39 km
- Kenosha 32 km
- Waukegan 16 km
- Racine 47 km
- Arlington Heights 29 km
- Evanston 44 km
- Schaumburg 35 km
- Palatine 26 km
- Skokie 43 km
- Des Plaines 37 km
- Berwyn 59 km
- Mount Prospect 32 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 3 hrs ago
Key Messages
- Precipitation free, unseasonably warm weather will continue through this weekend, with temperatures continuing to generally run above average through next week.
- Chances for any meaningful rainfall are low through next workweek.
Discussion
Issued at 241 AM CDT Sat Oct 24 2026
There's not a lot to speak on for this weekend as our stretch of dry, mild weather continues. Temperatures early this morning are in the 40s and 50s with mostly clear skies now giving way to a high cloud deck filling in from the west. Some patchy fog is beginning to blossom around parts of SE WI and north-central IN. Patchy coverage is expected to spread into portions of our CWA prior to daybreak, primarily across parts of NW Indiana as well as in Lake Co, IL. While dense fog is not a widespread concern, localized pockets of some denser fog will certainly be possible through early morning, especially in Lake Co, IL. Otherwise, expect another pleasant late October day today with highs forecast in the lower 70s and a fair mix of mid-high clouds and sunshine.
Tomorrow is anticipated to be slightly warmer with lower to middle 70s in the forecast. A weakly-forced cold front will drop through the area from the north late Sunday into Monday. While we're not expecting any rain out of this, it will cool things off slightly for Monday and Tuesday. Monday, given that the front will be pushing north to south across our area into the daytime, is expected to see high temperatures range from the lower and middle 60s in our north to the 70 farther south. 60s and lower 70s will persist through the week with rain-free conditions favored through at least mid-week. A series of waves is then progged to traverse the region and possibly provide us with some rain late in the week and into next weekend.
Doom
Aviation
Issued at 609 AM CDT Sat Oct 24 2026
There are no significant aviation weather concerns anticipated through the period.
Surface high pressure will center over New England today into tonight as a cold front shifts eastward from the PLains into the Upper Midwest. Overall, this will result in light south- southeasterly surface winds across the terminal airspace today and tonight, before directions turn south-southwesterly during the day Sunday. VFR conditions will prevail through the period, though higher level cloud cover can be expected.
KJB
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.