Current Conditions

Round Lake Beach, Illinois

76°F24°C
Partly Cloudy

Wind

SSE 4 mph7 km/h

Humidity

41%

Cloud Cover

68%

As of Thursday, July 23, 2026 at 4:40 PM CDT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 76°F24°C. Light wind from the SSE around 3 mph5 km/h. Dry air.

Night

Overcast, with a low around 68°F20°C. Light wind from the SSE around 5 mph8 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ThursdayJul 23Partly CloudyHigh 76°F24°CLow 68°F20°CPrecip 0 in0 mmCloud 73%Wind SSE 4 mph7 km/hThursday: Mostly cloudy and warm, with a high of 76°F24°C. Light wind from the SSE around 3 mph5 km/h. Dry air. Thursday Night: Overcast, with a low around 68°F20°C. Light wind from the SSE around 5 mph8 km/h.
FridayJul 24Partly CloudyHigh 78°F26°CLow 64°F18°CPrecip 0 in0 mmCloud 59%Wind S 5 mph9 km/hFriday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 65°F18°C. Breezy from the S at 5 to 7 mph8 to 11 km/h. Friday Night: Mostly cloudy, with a low around 64°F18°C. Breezy from the S at 6 to 7 mph9 to 11 km/h.
SaturdayJul 25ClearHigh 81°F27°CLow 65°F18°CPrecip 0 in0 mmCloud 38%Wind SW 7 mph11 km/hSaturday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 66°F19°C. Breezy from the SW at 7 to 8 mph12 to 14 km/h. Saturday Night: Mostly clear, with a low around 65°F18°C. Breezy from the SW at 7 mph11 km/h.
SundayJul 26Partly CloudyHigh 88°F31°CFeels 94°F34°CLow 72°F22°CPrecip 0.02 in0.5 mm9%Cloud 65%Wind SW 6 mph10 km/hSunday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C. Breezy from the SW at 6 to 7 mph9 to 11 km/h. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the SW at 7 mph11 km/h.
MondayJul 27ShowersHigh 89°F31°CFeels 96°F36°CLow 75°F24°CPrecip 0.27 in6.9 mm39%Cloud 49%Wind SW 8 mph13 km/hMonday: Mostly cloudy and hot, with a high of 89°F31°C and morning low of 75°F24°C — feels like 97°F36°C. Breezy from the SW at 8 to 9 mph14 to 15 km/h. 39% chance of showers throughout the day. Heat risk in the afternoon. Monday Night: Partly cloudy, with a low around 76°F24°C. Breezy from the WSW at 8 mph12 km/h. 28% chance of showers throughout the night.
TuesdayJul 28DrizzleHigh 81°F27°CLow 71°F22°CPrecip 0.03 in0.8 mm17%Cloud 31%Wind NNE 9 mph15 km/hTuesday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the NNE at 10 mph16 km/h. Humid. Tuesday Night: Mostly clear, with a low around 71°F22°C. Breezy from the NNE at 8 to 9 mph13 to 15 km/h. 17% chance of drizzle overnight.
WednesdayJul 29ClearHigh 81°F27°CLow 67°F19°CPrecip 0.02 in0.4 mm7%Cloud 17%Wind NE 7 mph11 km/hWednesday: Mostly clear and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the NE at 7 to 8 mph11 to 12 km/h. Wednesday Night: Mostly clear, with a low around 67°F19°C. Breezy from the NE at 7 mph11 km/h.

15-Day Forecast

Day High (°F) Low (°F) Precip (mm) Cloud Cover (%) Condition Wind (mph)

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