Current Conditions

Round Lake, Illinois

76°F24°C
Light Rain

Wind

ESE 3 mph5 km/h

Humidity

81%

Cloud Cover

100%

As of Thursday, August 13, 2026 at 1:42 PM CDT

Today's Outlook

Day

Overcast and warm, with a high of 76°F24°C. Breezy from the E at 4 to 7 mph7 to 11 km/h. 64% chance of light rain in the afternoon. Heavy, humid air.

Night

Overcast, with a low around 73°F23°C. Light wind from the E around 5 mph8 km/h. 57% chance of light rain throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Light RainHigh 76°F24°CLow 71°F22°CPrecip 0.08 in2.1 mm64%Cloud 97%Wind E 5 mph7 km/hThursday: Overcast and warm, with a high of 76°F24°C. Breezy from the E at 4 to 7 mph7 to 11 km/h. 64% chance of light rain in the afternoon. Heavy, humid air. Thursday Night: Overcast, with a low around 73°F23°C. Light wind from the E around 5 mph8 km/h. 57% chance of light rain throughout the night.
Light RainHigh 76°F24°CLow 71°F22°CPrecip 0.33 in8.4 mm76%Cloud 95%Wind ENE 7 mph11 km/hFriday: Overcast and warm, with a high of 76°F24°C. Breezy from the E at 7 to 8 mph12 to 13 km/h. 76% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 72°F22°C. Breezy from the ENE at 7 mph11 km/h. 52% chance of light rain throughout the night.
RainHigh 78°F25°CLow 72°F22°CPrecip 0.43 in10.8 mm70%Cloud 92%Wind SE 6 mph10 km/hSaturday: Overcast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the SSE at 7 mph11 km/h. 70% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 72°F22°C. Light wind from the SE around 6 mph9 km/h. 30% chance of light rain throughout the night.
Light RainHigh 83°F28°CFeels 88°F31°CLow 74°F23°CPrecip 0.3 in7.7 mm55%Cloud 84%Wind WNW 7 mph12 km/hSunday: Overcast and warm, with a high of 83°F28°C and morning low of 74°F23°C. Breezy from the WNW at 8 mph12 km/h. 43% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 74°F23°C. Breezy from the WNW at 7 to 8 mph11 to 13 km/h. 55% chance of light rain throughout the night.
DrizzleHigh 77°F25°CLow 68°F20°CPrecip 0.04 in1.1 mm27%Cloud 58%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 N at 6 to 7 mph10 to 11 km/h. 15% chance of drizzle around midday. Monday Night: Partly cloudy, with a low around 69°F21°C. Breezy from the NNE at 6 to 9 mph10 to 14 km/h. 27% chance of drizzle overnight.
DrizzleHigh 81°F27°CLow 66°F19°CPrecip 0.02 in0.4 mm18%Cloud 58%Wind SW 7 mph12 km/hTuesday: 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 9 mph12 to 15 km/h. Tuesday Night: Mostly cloudy, with a low around 66°F19°C. Breezy from the SSW at 7 to 9 mph11 to 15 km/h. 18% chance of drizzle in the evening.
Light RainHigh 78°F26°CLow 70°F21°CPrecip 0.28 in7.2 mm52%Cloud 70%Wind WSW 9 mph15 km/hWednesday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 70°F21°C. Breezy from the WSW at 9 to 10 mph15 to 15 km/h. 52% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 50% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1376°F24°C71°F22°C0.08 in2.1 mm· 64%97%Light RainE 5 mph7 km/h
FridayAug 1476°F24°C71°F22°C0.33 in8.4 mm· 76%95%Light RainENE 7 mph11 km/h
SaturdayAug 1578°F25°C72°F22°C0.43 in10.8 mm· 70%92%RainSE 6 mph10 km/h
SundayAug 1683°F28°C
Feels 88°F31°C
74°F23°C0.3 in7.7 mm· 55%84%Light RainWNW 7 mph12 km/h
MondayAug 1777°F25°C68°F20°C0.04 in1.1 mm· 27%58%DrizzleNNE 6 mph10 km/h
TuesdayAug 1881°F27°C66°F19°C0.02 in0.4 mm· 18%58%DrizzleSW 7 mph12 km/h
WednesdayAug 1978°F26°C70°F21°C0.28 in7.2 mm· 52%70%Light RainWSW 9 mph15 km/h
ThursdayAug 2074°F23°C65°F18°C0.08 in2.1 mm· 11%47%DrizzleN 8 mph13 km/h
FridayAug 2176°F24°C63°F17°C0.07 in1.8 mm· 11%50%DrizzleSE 6 mph10 km/h
SaturdayAug 2279°F26°C66°F19°C0.1 in2.6 mm· 18%48%ShowersS 6 mph10 km/h
SundayAug 2380°F27°C67°F19°C0.02 in0.6 mm· 9%40%ClearSW 7 mph12 km/h
MondayAug 2481°F27°C67°F20°C0.03 in0.8 mm· 7%41%Partly CloudySSW 8 mph12 km/h
TuesdayAug 2581°F27°C68°F20°C0.04 in1 mm· 9%46%Partly CloudySSE 7 mph12 km/h
WednesdayAug 2680°F27°C68°F20°C0.07 in1.8 mm· 14%50%DrizzleE 7 mph12 km/h
ThursdayAug 2778°F26°C67°F19°C0.05 in1.2 mm· 13%47%DrizzleNE 8 mph12 km/h

Nearby Cities

About This Forecast

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Coordinates: 42.3534°N, 88.0934°W·Elevation: 243m·Timezone: America/Chicago·Population: 18,461