Weather WorldHigh Lake, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
High Lake Weather Forecast
| LATE THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  | |  |  | | | | | | |
| Mostly Sunny | Clearing | Patchy Fog | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM CDT Mon Oct 19 2026 
High Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
High Lake Weather Map
High Lake Quick Facts
High Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 615 PM CDT Mon Oct 19 2026
Key Messages
- Shallow fog may develop in northeastern Illinois early Tuesday morning. Any fog would dissipate a few hours after sunrise.
- An extended period of dry and above to much above average temperatures is expected through the next 7 days.
Discussion
... Issued at 1223 PM CDT Mon Oct 19 2026
The only item of note is a threat for shallow fog overnight into tomorrow morning near Lake Michigan where a modestly more moist environment will advect inland. Otherwise, no significant weather is expected ...