Current Conditions

Round Lake Beach, Illinois

74°F23°C
Light Rain

Wind

E 4 mph6 km/h

Humidity

90%

Cloud Cover

20%

As of Wednesday, August 12, 2026 at 8:58 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 71°F21°C. Light wind from the E around 4 mph6 km/h. 55% chance of showers in the evening.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Light RainHigh 76°F24°CLow 71°F21°CPrecip 0.19 in4.8 mm89%Cloud 80%Wind E 4 mph7 km/hThursday: Overcast and warm, with a high of 76°F24°C. Light wind from the ESE around 5 mph7 km/h. 89% chance of light rain around midday. Humid. Thursday Night: Mostly cloudy, with a low around 71°F21°C. Light wind from the E around 4 mph6 km/h. 55% chance of showers in the evening.
Light RainHigh 77°F25°CLow 72°F22°CPrecip 0.19 in4.7 mm54%Cloud 93%Wind E 7 mph11 km/hFriday: Overcast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the E at 7 to 8 mph12 to 13 km/h. 46% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 6 mph10 km/h. 54% chance of light rain throughout the night.
Light RainHigh 80°F26°CLow 73°F23°CPrecip 0.38 in9.7 mm62%Cloud 90%Wind SSE 6 mph10 km/hSaturday: Overcast and warm, with a high of 80°F26°C and morning low of 73°F23°C. Breezy from the SSE at 7 mph11 km/h. 62% chance of light rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 73°F23°C. Light wind from the SE around 6 mph10 km/h. 41% chance of light rain throughout the night.
Light RainHigh 81°F27°CFeels 86°F30°CLow 73°F23°CPrecip 0.22 in5.6 mm43%Cloud 83%Wind WNW 8 mph13 km/hSunday: Overcast and warm, with a high of 81°F27°C and morning low of 75°F24°C. Breezy from the WNW at 8 to 9 mph13 to 15 km/h. 35% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 73°F23°C. Breezy from the WNW at 8 mph12 km/h. 43% chance of light rain throughout the night.
ShowersHigh 77°F25°CLow 68°F20°CPrecip 0.04 in1 mm25%Cloud 59%Wind NNE 6 mph10 km/hMonday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the NNE at 7 to 8 mph11 to 12 km/h. 16% chance of drizzle. Monday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the NNE at 6 to 9 mph10 to 14 km/h. 25% chance of showers overnight.
DrizzleHigh 82°F28°CLow 66°F19°CPrecip 0.02 in0.6 mm12%Cloud 59%Wind SSW 6 mph10 km/hTuesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Breezy from the SW at 7 to 8 mph11 to 14 km/h. Tuesday Night: Mostly cloudy, with a low around 66°F19°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h. 12% chance of drizzle in the evening.
Light RainHigh 81°F27°CLow 71°F22°CPrecip 0.31 in7.9 mm41%Cloud 74%Wind SW 8 mph13 km/hWednesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 71°F22°C. Breezy from the WSW at 8 to 9 mph14 to 14 km/h. 41% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 37% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1376°F24°C71°F21°C0.19 in4.8 mm· 89%80%Light RainE 4 mph7 km/h
FridayAug 1477°F25°C72°F22°C0.19 in4.7 mm· 54%93%Light RainE 7 mph11 km/h
SaturdayAug 1580°F26°C73°F23°C0.38 in9.7 mm· 62%90%Light RainSSE 6 mph10 km/h
SundayAug 1681°F27°C
Feels 86°F30°C
73°F23°C0.22 in5.6 mm· 43%83%Light RainWNW 8 mph13 km/h
MondayAug 1777°F25°C68°F20°C0.04 in1 mm· 25%59%ShowersNNE 6 mph10 km/h
TuesdayAug 1882°F28°C66°F19°C0.02 in0.6 mm· 12%59%DrizzleSSW 6 mph10 km/h
WednesdayAug 1981°F27°C71°F22°C0.31 in7.9 mm· 41%74%Light RainSW 8 mph13 km/h
ThursdayAug 2077°F25°C68°F20°C0.14 in3.6 mm· 19%55%ShowersN 8 mph12 km/h
FridayAug 2179°F26°C66°F19°C0.09 in2.3 mm· 19%46%ShowersWSW 7 mph11 km/h
SaturdayAug 2280°F27°C67°F19°C0.09 in2.4 mm· 16%45%ShowersSW 7 mph12 km/h
SundayAug 2379°F26°C67°F19°C0.09 in2.2 mm· 19%42%DrizzleW 8 mph13 km/h
MondayAug 2479°F26°C66°F19°C0.06 in1.4 mm· 10%38%DrizzleNNW 8 mph12 km/h
TuesdayAug 2579°F26°C66°F19°C0.03 in0.7 mm· 9%37%ClearSSW 7 mph11 km/h
WednesdayAug 2679°F26°C66°F19°C0.05 in1.2 mm· 10%37%DrizzleW 7 mph12 km/h
ThursdayAug 2777°F25°C65°F18°C0.04 in1.1 mm· 12%45%DrizzleNE 8 mph12 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