What is the high temperature today in Round Lake, IL?

The National Weather Service forecast for today calls for a high near 66°F. Mostly Cloudy.

Will it rain in Round Lake, IL 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 Round Lake, IL?

The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 3 to Nov 5) come from the NOAA National Blend of Models, with highs of 56°F to 60°F and up to a 57% chance of precipitation. Model guidance this far out often changes.

What time is sunrise and sunset in Round Lake, IL today?

Sunrise is about 7:19 AM CDT and sunset is about 5:52 PM CDT (calculated for the center of the area, within a few minutes).

What is the normal October weather in Round Lake, IL?

At Mundelein 4 Wsw, the 1991 to 2020 normal high in October is 61°F and the normal low is 42°F.

Checked Oct 27, 2026

Round Lake, IL Weather

Current conditions, hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Round Lake, IL current weather

59°F

Mostly Cloudy

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

H 66° / L 50°

No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/27/2026, 9:20 AM CDT

Hourly forecast

NWS, updated 9:20 AM

Now59°
12 PM61°
1 PM63°
2 PM65°
3 PM66°
4 PM66°
5 PM64°
6 PM61°
7 PM60°12%
8 PM58°12%
9 PM58°12%
10 PM58°
11 PM57°
Wed12 AM56°
1 AM56°
2 AM55°
3 AM53°
4 AM52°
5 AM51°
6 AM51°
7 AM50°
8 AM52°
9 AM57°
10 AM61°
11 AM66°
12 PM68°
1 PM70°
2 PM71°
3 PM72°
4 PM71°
5 PM69°
6 PM65°
7 PM64°
8 PM59°
9 PM58°
10 PM58°
11 PM57°
Thu12 AM57°
1 AM57°18%
2 AM57°18%
3 AM57°18%
4 AM56°18%
5 AM55°18%
6 AM55°18%
7 AM55°31%
8 AM57°31%
9 AM60°31%
10 AM63°31%

10-day forecast

Tap a day for details

Today10/2712% chance of precipitationLow 50°High 66°
Today: Mostly cloudy. High near 66, with temperatures falling to around 64 in the afternoon. Southeast wind 5 to 10 mph.
Tonight: Mostly cloudy, with a low around 50. South southeast wind around 5 mph.
Mostly Cloudy
Wed10/2818% chance of precipitationLow 55°High 72°
Wednesday: Mostly sunny. High near 72, with temperatures falling to around 69 in the afternoon. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night: A slight chance of rain showers between 1am and 4am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Mostly Sunny
Thu10/2934% chance of precipitationLow 46°High 71°
Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 71. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night: A chance of rain showers before 7pm. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
Chance Showers And Thunderstorms
Fri10/3049% chance of precipitationLow 51°High 67°
Friday: A chance of rain showers after 1pm. Partly sunny, with a high near 67.
Friday Night: A chance of rain showers before 1am, then a chance of showers and thunderstorms. Cloudy, with a low around 51.
Partly Sunny then Chance Rain Showers
Sat10/3149% chance of precipitationLow 52°High 68°
Saturday: A chance of showers and thunderstorms. Cloudy, with a high near 68.
Saturday Night: A chance of rain showers. Mostly cloudy, with a low around 52.
Chance Showers And Thunderstorms
Sun11/141% chance of precipitationLow 52°High 69°
Sunday: A chance of rain showers. Mostly cloudy, with a high near 69.
Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 52.
Chance Rain Showers
Mon11/262% chance of precipitationLow 48°High 67°
Monday: Rain showers likely. Mostly cloudy, with a high near 67.
Monday Night: Rain showers likely. Mostly cloudy, with a low around 48.
Rain Showers Likely
Model blend
Tue11/3Model blend57% chance of precipitationLow 42°High 60°
Tuesday: Chance of rain. High near 60°. Low that night near 42°. About 0.92 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Wed11/4Model blend46% chance of precipitationLow 39°High 58°
Wednesday: Chance of rain. High near 58°. Low that night near 39°. About 0.10 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Thu11/5Model blend27% chance of precipitationLow 38°High 56°
Thursday: Mostly cloudy, slight chance of rain. High near 56°. Low that night near 38°. About 0.01 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 42.339, -88.097 from the NWS LOT office, updated 10/27/2026, 9:20 AM CDT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KUGN (Waukegan Rgnl, 13 mi), model run 10/27/2026, 3:00 AM 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

Now59°Mostly Cloudy0%10 mph
12 PM61°Mostly Cloudy0%10 mph
1 PM63°Mostly Cloudy0%10 mph
2 PM65°Mostly Cloudy0%10 mph
3 PM66°Mostly Cloudy0%10 mph
4 PM66°Mostly Cloudy5%10 mph

Hourly details

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

Line: temperature °F. Bars: chance of precipitation.

TueNow59° 0% Sky 74%10
12 PM61° 0% Sky 72%10
1 PM63° 0% Sky 71%10
2 PM65° 0% Sky 72%10
3 PM66° 0% Sky 74%10
4 PM66° 5% Sky 76%10
5 PM64° 5% Sky 77%5
6 PM61° 5% Sky 79%5
7 PM60° 12% Sky 82%5
8 PM58° 12% Sky 78%5
9 PM58° 12% Sky 75%5
10 PM58° 0% Sky 72%5
11 PM57° 0% Sky 72%5
Wed 10/2812 AM56° 0% Sky 72%5
1 AM56° 0% Sky 74%5
2 AM55° 0% Sky 77%5
3 AM53° 0% Sky 79%5
4 AM52° 0% Sky 67%5
5 AM51° 0% Sky 54%5
6 AM51° 0% Sky 49%5
7 AM50° 0% Sky 44%5
8 AM52° 0% Sky 38%5
9 AM57° 0% Sky 33%5
10 AM61° 0% Sky 33%5
11 AM66° 0% Sky 27%5g12
12 PM68° 0% Sky 27%10
1 PM70° 0% Sky 31%10
2 PM71° 0% Sky 18%10g16
3 PM72° 0% Sky 14%10g16
4 PM71° 0% Sky 24%10g16
5 PM69° 0% Sky 13%10
6 PM65° 0% Sky 21%10
7 PM64° 2% Sky 26%10
8 PM59° 2% Sky 25%10g15
9 PM58° 2% Sky 24%10g16
10 PM58° 2% Sky 26%10g18
11 PM57° 2% Sky 32%10g18
Thu 10/2912 AM57° 2% Sky 39%10g20
1 AM57° 18% Sky 47%10g20
2 AM57° 18% Sky 49%10g21
3 AM57° 18% Sky 52%10g21
4 AM56° 18% Sky 54%15g21
5 AM55° 18% Sky 56%10g21
6 AM55° 18% Sky 57%10g20
7 AM55° 31% Sky 59%10g18
8 AM57° 31% Sky 57%10g17
9 AM60° 31% Sky 55%10g17
10 AM63° 31% Sky 53%10g16
11 AM66° 31% Sky 57%10g16
12 PM69° 31% Sky 60%10g16
1 PM71° 34% Sky 65%10g16
2 PM71° 34% Sky 63%10g16
3 PM71° 34% Sky 62%10g15
4 PM71° 34% Sky 62%10
5 PM70° 34% Sky 61%5g12
6 PM67° 34% Sky 60%5
7 PM62° 0% Sky 60%5
8 PM60° 0% Sky 60%5
9 PM57° 0% Sky 60%5
10 PM55° 0% Sky 60%5
11 PM53° 0% Sky 60%0g6
Fri 10/3012 AM52° 0% Sky 60%0g6
1 AM50° 2% Sky 49%0g6
2 AM49° 2% Sky 51%0g6
3 AM48° 2% Sky 53%0g6
4 AM47° 2% Sky 55%0g6
5 AM46° 2% Sky 55%0g6
6 AM46° 2% Sky 56%0g6
7 AM47° 12% Sky 56%0g6
8 AM50° 12% Sky 59%5
9 AM55° 12% Sky 62%5
10 AM59° 12% Sky 65%5
11 AM62° 12% Sky 63%5
12 PM65° 12% Sky 62%5g10
1 PM66° 28% Sky 60%5g10
2 PM67° 28% Sky 65%5g10
3 PM66° 28% Sky 71%5g12
4 PM64° 28% Sky 76%5g10
5 PM63° 28% Sky 80%5g10
6 PM60° 28% Sky 83%5g10
7 PM60° 41% Sky 87%5
8 PM58° 41% Sky 87%5
9 PM56° 41% Sky 87%0g6
10 PM55° 41% Sky 87%0g6
11 PM55° 41% Sky 87%0g6
Sat 10/3112 AM55° 41% Sky 87%0g6
1 AM55° 49% Sky 94%0g6
2 AM54° 49% Sky 94%0g6
3 AM54° 49% Sky 94%0g6
4 AM53° 49% Sky 94%0g6
5 AM52° 49% Sky 94%0g5
6 AM52° 49% Sky 94%0g5
7 AM52° 38% Sky 93%0g5
8 AM54° 38% Sky 93%0g5
9 AM56° 38% Sky 93%0g6
10 AM59° 38% Sky 93%5
11 AM62° 38% Sky 93%5
12 PM64° 38% Sky 93%5
1 PM66° 20% Sky 83%5
2 PM67° 20% Sky 83%5
3 PM68° 20% Sky 83%5
4 PM67° 20% Sky 83%5
5 PM66° 20% Sky 83%5
6 PM64° 20% Sky 83%5
7 PM62° 24% Sky 83%5
8 PM60° 24% Sky 83%5
9 PM58° 24% Sky 83%5
10 PM56° 24% Sky 83%0g7
11 PM55° 24% Sky 83%0g7
Sun 11/112 AM55° 24% Sky 83%0g6
1 AM55° 32% Sky 79%0g5
1 AM55° 32% Sky 79%0g5
2 AM54° 32% Sky 79%0g5
3 AM54° 32% Sky 79%0g6
4 AM54° 32% Sky 79%0g5
5 AM53° 32% Sky 79%0g5
6 AM54° 41% Sky 83%0g5
7 AM56° 41% Sky 83%0g5
8 AM58° 41% Sky 83%5
9 AM61° 41% Sky 83%5
10 AM63° 41% Sky 83%5
11 AM66° 41% Sky 83%5
12 PM67° 30% Sky 65%5
1 PM68° 30% Sky 65%5
2 PM69° 30% Sky 65%5
3 PM68° 30% Sky 65%5
4 PM67° 30% Sky 65%5
5 PM65° 30% Sky 65%5
6 PM63° 25% Sky 75%0g5
7 PM61° 25% Sky 75%0g5
8 PM59° 25% Sky 75%0
9 PM57° 25% Sky 75%0
10 PM56° 25% Sky 75%0
11 PM56° 25% Sky 75%0
Mon 11/212 AM56° 21% Sky 69%0
1 AM55° 21% Sky 69%0
2 AM54° 21% Sky 69%0
3 AM54° 21% Sky 69%0
4 AM54° 21% Sky 69%0
5 AM53° 21% Sky 69%0g5
6 AM54° 30% Sky 78%0g5
7 AM56° 30% Sky 78%5
8 AM58° 30% Sky 78%5
9 AM60° 30% Sky 78%5
10 AM62° 30% Sky 78%5
11 AM64° 30% Sky 78%5g10
12 PM65° 56% Sky 73%5g12
1 PM66° 56% Sky 73%5g14
2 PM67° 56% Sky 73%10g15
3 PM66° 56% Sky 73%10g16
4 PM65° 56% Sky 73%10g15
5 PM63° 56% Sky 73%10g15
6 PM61° 60% Sky 83%10
7 PM59° 60% Sky 83%10
8 PM57° 60% Sky 83%10g15

Temperature °F · chance of precipitation · amount in inches (T = trace) · sky cover · wind and gusts (g) in mph

NWS hourly forecast updated 10/27/2026, 9:20 AM CDT

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

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

Drought

By county

Lake County, week of 10/20/2026

No drought or abnormal dryness in this county.

Beaches nearby

EPA BEACON beaches

Frequently asked questions

What is the high temperature today in Round Lake, IL?: The National Weather Service forecast for today calls for a high near 66°F. Mostly Cloudy.
Will it rain in Round Lake, IL 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 Round Lake, IL?: The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 3 to Nov 5) come from the NOAA National Blend of Models, with highs of 56°F to 60°F and up to a 57% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Round Lake, IL today?: Sunrise is about 7:19 AM CDT and sunset is about 5:52 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Round Lake, IL?: At Mundelein 4 Wsw, the 1991 to 2020 normal high in October is 61°F and the normal low is 42°F.

Sun and moon

Local time, center of the area

Sunrise: 7:19 AM
Sunset: 5:52 PM
Daylight: 10 hr 33 min
Moon: Waning Gibbous 97% lit

First light (civil dawn): 6:51 AM
Last light (civil dusk): 6:21 PM
Moonrise: 6:23 PM
Moonset: 9:14 AM

Normal October weather

Climate

Normal October high 61°, low 42°, precipitation 3.20 in for the month. 1991 to 2020 normals at Mundelein 4 Wsw, 6 mi away.

Other places nearby

Data sources

National Weather Service APINOAA
National Blend of Models (NBM) text guidanceNOAA National Weather Service
Convective Outlooks and Storm ReportsNOAA Storm Prediction Center
Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center
National Water Prediction ServiceNOAA National Weather Service
WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center
UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA
AirNowU.S. Environmental Protection Agency
NWS HeatRisk (experimental)NOAA National Weather Service
U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA
BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency
U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information
Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services
NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University
GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research

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About this data

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