Current Conditions

Round Lake Beach, Illinois

59°F15°C
Partly Cloudy

Wind

ENE 10 mph17 km/h

Humidity

75%

Cloud Cover

48%

As of Tuesday, September 22, 2026 at 9:52 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 56°F14°C. Breezy from the ENE at 9 to 10 mph14 to 17 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 63°F17°CLow 56°F13°CPrecip 0 in0 mmCloud 63%Wind ENE 10 mph16 km/hWednesday: Mostly cloudy and mild, with a high of 63°F17°C and morning low of 56°F13°C. Breezy from the ENE at 11 to 12 mph17 to 19 km/h. Wednesday Night: Mostly cloudy, with a low around 56°F14°C. Breezy from the ENE at 9 to 10 mph14 to 17 km/h.
Partly CloudyHigh 64°F18°CLow 57°F14°CPrecip 0 in0 mmCloud 42%Wind ENE 7 mph12 km/hThursday: Partly cloudy and mild, with a high of 64°F18°C and morning low of 57°F14°C. Breezy from the ENE at 8 to 9 mph13 to 14 km/h. Thursday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the ENE at 6 to 8 mph10 to 12 km/h.
Partly CloudyHigh 65°F19°CLow 58°F15°CPrecip 0 in0.1 mm6%Cloud 79%Wind E 6 mph9 km/hFriday: Mostly cloudy and mild, with a high of 65°F19°C and morning low of 58°F15°C. Breezy from the E at 6 to 7 mph9 to 12 km/h. Friday Night: Mostly cloudy, with a low around 59°F15°C. Light wind from the E around 5 mph9 km/h.
Partly CloudyHigh 66°F19°CLow 56°F13°CPrecip 0.01 in0.2 mm4%Cloud 80%Wind E 6 mph9 km/hSaturday: Overcast and mild, with a high of 66°F19°C and morning low of 56°F13°C. Light wind from the ESE around 6 mph10 km/h. Saturday Night: Mostly cloudy, with a low around 58°F14°C. Light wind from the E around 5 mph9 km/h.
DrizzleHigh 68°F20°CLow 57°F14°CPrecip 0.03 in0.8 mm17%Cloud 69%Wind ENE 4 mph7 km/hSunday: Mostly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Light wind from the ENE around 4 mph7 km/h. 17% chance of drizzle in the morning. Sunday Night: Mostly cloudy, with a low around 58°F14°C. Light wind from the ENE around 4 mph7 km/h. 15% chance of drizzle overnight.
ClearHigh 71°F21°CLow 56°F13°CPrecip 0 in0 mmCloud 33%Wind NE 4 mph7 km/hMonday: Partly cloudy and warm, with a high of 71°F21°C and morning low of 56°F13°C. Light wind from the NE around 4 mph6 km/h. Monday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the ENE around 5 mph7 km/h.
Light RainHigh 71°F22°CLow 57°F14°CPrecip 0.06 in1.6 mm27%Cloud 76%Wind SSE 7 mph11 km/hTuesday: Overcast and warm, with a high of 71°F22°C and morning low of 57°F14°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 11% chance of drizzle in the afternoon. Tuesday Night: Mostly cloudy, with a low around 57°F14°C. Breezy from the SSE at 7 to 8 mph11 to 14 km/h. 27% chance of light rain in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2363°F17°C56°F13°C0 in0 mm· —63%Partly CloudyENE 10 mph16 km/h
ThursdaySep 2464°F18°C57°F14°C0 in0 mm· —42%Partly CloudyENE 7 mph12 km/h
FridaySep 2565°F19°C58°F15°C0 in0.1 mm· 6%79%Partly CloudyE 6 mph9 km/h
SaturdaySep 2666°F19°C56°F13°C0.01 in0.2 mm· 4%80%Partly CloudyE 6 mph9 km/h
SundaySep 2768°F20°C57°F14°C0.03 in0.8 mm· 17%69%DrizzleENE 4 mph7 km/h
MondaySep 2871°F21°C56°F13°C0 in0 mm· —33%ClearNE 4 mph7 km/h
TuesdaySep 2971°F22°C57°F14°C0.06 in1.6 mm· 27%76%Light RainSSE 7 mph11 km/h
WednesdaySep 3067°F19°C61°F16°C0.38 in9.7 mm· 37%82%Light RainS 9 mph15 km/h
ThursdayOct 167°F19°C58°F14°C0.2 in5 mm· 27%66%ShowersWNW 9 mph15 km/h
FridayOct 267°F20°C56°F13°C0.12 in3.1 mm· 19%60%ShowersWSW 8 mph14 km/h
SaturdayOct 367°F20°C57°F14°C0.11 in2.8 mm· 21%65%ShowersSW 9 mph14 km/h
SundayOct 465°F18°C56°F13°C0.16 in4 mm· 21%60%ShowersWSW 10 mph16 km/h
MondayOct 564°F18°C53°F12°C0.11 in2.9 mm· 20%54%ShowersW 10 mph16 km/h
TuesdayOct 665°F19°C52°F11°C0.06 in1.6 mm· 14%45%DrizzleW 9 mph15 km/h
WednesdayOct 764°F18°C51°F11°C0.09 in2.4 mm· 14%46%DrizzleWNW 10 mph15 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 42.3717°N, 88.0901°W·Elevation: 233m·Timezone: America/Chicago·Population: 27,852