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Island Lake, IL 60042 Weather

Tonight: Mostly Clear, low 39°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Island Lake, IL 60042 current weather

50°F

Clear

Forecast for this hour. No recent report from a nearby station.

H -- / L 39°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/29/2026, 7:31 PM PT

Hourly forecast

NWS, updated 10/29/2026, 7:31 PM PT

  1. Now50°
  2. 10 PM49°
  3. 11 PM49°
  4. 12 AM47°Fri
  5. 1 AM45°
  6. 2 AM44°
  7. 3 AM43°
  8. 4 AM42°
  9. 5 AM40°
  10. 6 AM39°
  11. 7 AM40°
  12. 8 AM43°
  13. 9 AM47°
  14. 10 AM52°
  15. 11 AM56°
  16. 12 PM58°
  17. 1 PM59°13%
  18. 2 PM59°13%
  19. 3 PM58°13%
  20. 4 PM57°13%
  21. 5 PM55°13%
  22. 6 PM54°13%
  23. 7 PM50°19%
  24. 8 PM49°19%
  25. 9 PM48°19%
  26. 10 PM48°19%
  27. 11 PM47°19%
  28. 12 AM47°19%Sat
  29. 1 AM47°47%
  30. 2 AM47°47%
  31. 3 AM47°47%
  32. 4 AM48°47%
  33. 5 AM48°47%
  34. 6 AM47°47%
  35. 7 AM47°74%
  36. 8 AM46°74%
  37. 9 AM49°74%
  38. 10 AM54°74%
  39. 11 AM57°74%
  40. 12 PM58°74%
  41. 1 PM59°36%
  42. 2 PM59°36%
  43. 3 PM60°36%
  44. 4 PM60°36%
  45. 5 PM58°36%
  46. 6 PM57°36%
  47. 7 PM55°23%
  48. 8 PM53°23%

10-day forecast

Tap a day for details

  • Today10/29Low 39°High

    Tonight: Mostly clear, with a low around 39. North northwest wind around 0 mph.

    Mostly Clear
  • Fri10/3047% chance of precipitationLow 46°High 59°

    Friday: Partly sunny. High near 59, with temperatures falling to around 55 in the afternoon. Northeast wind 0 to 5 mph, with gusts as high as 10 mph.

    Friday Night: A chance of rain showers after 7pm. Cloudy. Low around 46, with temperatures rising to around 48 overnight. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Partly Sunny
  • Sat10/3174% chance of precipitationLow 47°High 60°

    Saturday: Rain showers likely. Cloudy, with a high near 60. Southeast wind 5 to 10 mph. Chance of precipitation is 70%.

    Saturday Night: A chance of rain showers before 10pm. Cloudy, with a low around 47. East southeast wind 0 to 5 mph, with gusts as high as 10 mph. Chance of precipitation is 40%.

    Rain Showers Likely
  • Sun11/120% chance of precipitationLow 51°High 67°

    Sunday: A slight chance of rain showers after noon. Partly sunny, with a high near 67. Chance of precipitation is 20%.

    Sunday Night: A slight chance of rain showers. Mostly cloudy, with a low around 51.

    Partly Sunny then Slight Chance Rain Showers
  • Mon11/263% chance of precipitationLow 56°High 65°

    Monday: A chance of rain showers. Mostly cloudy, with a high near 65.

    Monday Night: Rain showers likely. Mostly cloudy, with a low around 56.

    Chance Rain Showers
  • Tue11/366% chance of precipitationLow 56°High 70°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 70.

    Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 56.

    Rain Showers Likely
  • Wed11/463% chance of precipitationLow 49°High 67°

    Wednesday: Rain showers likely. Mostly cloudy, with a high near 67.

    Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 49.

    Rain Showers Likely
  • Thu11/542% chance of precipitationLow High 62°

    Thursday: A chance of rain showers. Mostly cloudy, with a high near 62.

    Chance Rain Showers
  • Fri11/6Model blend32% chance of precipitationLow 41°High 59°

    Friday: Chance of rain. High near 59°. Low that night near 41°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend24% chance of precipitationLow 40°High 58°

    Saturday: Mostly cloudy, slight chance of rain. High near 58°. Low that night near 40°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 42.281, -88.202 from the NWS LOT office, updated 10/29/2026, 7:31 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KPWK (Chicago Exec, 19 mi), model run 10/29/2026, 3:00 PM CDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now50°Clear0%0 mph
  2. 10 PM49°Clear0%0 mph
  3. 11 PM49°Clear0%0 mph
  4. 12 AM47°Clear0%0 mph
  5. 1 AM45°Clear0%0 mph
  6. 2 AM44°Clear0%0 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

Will it rain in Island Lake, IL 60042 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Island Lake, IL 60042?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 6 to Nov 7) come from the NOAA National Blend of Models, with highs of 58°F to 59°F and up to a 32% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Island Lake, IL 60042 today?
Sunrise is about 7:22 AM CDT and sunset is about 5:50 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Island Lake, IL 60042?
At Mc Henry -Wg Stratton L&d, the 1991 to 2020 normal high in October is 63°F and the normal low is 40°F.

Nearby hazards

Illinois hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (North and West Suburbs (Chicago))
GoodPM2.5
AQI forecast tomorrow (North and West Suburbs (Chicago))
GoodPM2.5

UV index guide · Air quality

Drought

By county

McHenry County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:22 AM
Sunset
5:50 PM
Daylight
10 hr 28 min
Moon
Waning Gibbous 83% lit
First light (civil dawn)
6:53 AM
Last light (civil dusk)
6:19 PM
Moonrise
8:12 PM
Moonset
11:42 AM

Normal October weather

Climate

Normal October high 63°, low 40°, precipitation 3.21 in for the month. 1991 to 2020 normals at Mc Henry -Wg Stratton L&d, 3 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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