Current Conditions
Round Lake Beach, Illinois
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
| Day | Condition | High (°F) | Low (°F) | Precip (mm) | Cloud Cover (%) | Wind (mph) | |
|---|---|---|---|---|---|---|---|
| Light Rain | High 76°F24°C | Low 71°F21°C | Precip 0.19 in4.8 mm89% | Cloud 80% | Wind E 4 mph7 km/h | Thursday: 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 Rain | High 77°F25°C | Low 72°F22°C | Precip 0.19 in4.7 mm54% | Cloud 93% | Wind E 7 mph11 km/h | Friday: 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 Rain | High 80°F26°C | Low 73°F23°C | Precip 0.38 in9.7 mm62% | Cloud 90% | Wind SSE 6 mph10 km/h | Saturday: 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 Rain | High 81°F27°CFeels 86°F30°C | Low 73°F23°C | Precip 0.22 in5.6 mm43% | Cloud 83% | Wind WNW 8 mph13 km/h | Sunday: 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. | |
| Showers | High 77°F25°C | Low 68°F20°C | Precip 0.04 in1 mm25% | Cloud 59% | Wind NNE 6 mph10 km/h | Monday: 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. | |
| Drizzle | High 82°F28°C | Low 66°F19°C | Precip 0.02 in0.6 mm12% | Cloud 59% | Wind SSW 6 mph10 km/h | Tuesday: 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 Rain | High 81°F27°C | Low 71°F22°C | Precip 0.31 in7.9 mm41% | Cloud 74% | Wind SW 8 mph13 km/h | Wednesday: 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 13 | 76°F24°C | 71°F21°C | 0.19 in4.8 mm· 89% | 80% | Light Rain | E 4 mph7 km/h | |
DayOvercast 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. NightMostly 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. | |||||||
| FridayAug 14 | 77°F25°C | 72°F22°C | 0.19 in4.7 mm· 54% | 93% | Light Rain | E 7 mph11 km/h | |
DayOvercast 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. NightOvercast, 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. | |||||||
| SaturdayAug 15 | 80°F26°C | 73°F23°C | 0.38 in9.7 mm· 62% | 90% | Light Rain | SSE 6 mph10 km/h | |
DayOvercast 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. NightOvercast, 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. | |||||||
| SundayAug 16 | 81°F27°C Feels 86°F30°C | 73°F23°C | 0.22 in5.6 mm· 43% | 83% | Light Rain | WNW 8 mph13 km/h | |
DayOvercast 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. NightOvercast, with a low around 73°F23°C. Breezy from the WNW at 8 mph12 km/h. 43% chance of light rain throughout the night. | |||||||
| MondayAug 17 | 77°F25°C | 68°F20°C | 0.04 in1 mm· 25% | 59% | Showers | NNE 6 mph10 km/h | |
DayMostly 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. NightMostly 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. | |||||||
| TuesdayAug 18 | 82°F28°C | 66°F19°C | 0.02 in0.6 mm· 12% | 59% | Drizzle | SSW 6 mph10 km/h | |
DayMostly 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. NightMostly 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. | |||||||
| WednesdayAug 19 | 81°F27°C | 71°F22°C | 0.31 in7.9 mm· 41% | 74% | Light Rain | SW 8 mph13 km/h | |
DayMostly 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. NightMostly 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. | |||||||
| ThursdayAug 20 | 77°F25°C | 68°F20°C | 0.14 in3.6 mm· 19% | 55% | Showers | N 8 mph12 km/h | |
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the N at 8 mph13 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the N at 7 to 8 mph12 to 12 km/h. 18% chance of showers throughout the night. | |||||||
| FridayAug 21 | 79°F26°C | 66°F19°C | 0.09 in2.3 mm· 19% | 46% | Showers | WSW 7 mph11 km/h | |
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. 19% chance of showers throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the SW at 7 mph11 km/h. 13% chance of drizzle throughout the night. | |||||||
| SaturdayAug 22 | 80°F27°C | 67°F19°C | 0.09 in2.4 mm· 16% | 45% | Showers | SW 7 mph12 km/h | |
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the WSW at 8 mph12 km/h. 16% chance of showers throughout the day. NightPartly cloudy, with a low around 67°F20°C. Breezy from the SW at 7 mph11 km/h. 14% chance of drizzle throughout the night. | |||||||
| SundayAug 23 | 79°F26°C | 67°F19°C | 0.09 in2.2 mm· 19% | 42% | Drizzle | W 8 mph13 km/h | |
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 67°F19°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the W at 8 mph12 km/h. 13% chance of drizzle throughout the night. | |||||||
| MondayAug 24 | 79°F26°C | 66°F19°C | 0.06 in1.4 mm· 10% | 38% | Drizzle | NNW 8 mph12 km/h | |
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the NNW at 8 mph13 km/h. NightPartly cloudy, with a low around 67°F19°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 10% chance of drizzle throughout the night. | |||||||
| TuesdayAug 25 | 79°F26°C | 66°F19°C | 0.03 in0.7 mm· 9% | 37% | Clear | SSW 7 mph11 km/h | |
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. NightPartly cloudy, with a low around 66°F19°C. Breezy from the S at 7 mph11 km/h. | |||||||
| WednesdayAug 26 | 79°F26°C | 66°F19°C | 0.05 in1.2 mm· 10% | 37% | Drizzle | W 7 mph12 km/h | |
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the W at 8 mph12 km/h. NightPartly cloudy, with a low around 67°F19°C. Breezy from the SSE at 7 mph11 km/h. 10% chance of drizzle throughout the night. | |||||||
| ThursdayAug 27 | 77°F25°C | 65°F18°C | 0.04 in1.1 mm· 12% | 45% | Drizzle | NE 8 mph12 km/h | |
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 65°F18°C. Breezy from the NE at 8 mph12 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the NE at 7 to 8 mph12 to 12 km/h. 10% chance of drizzle overnight. | |||||||
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.
WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →
Access WeatherMesh forecasts programmatically via our API. API Documentation →
Coordinates: 42.3717°N, 88.0901°W·Elevation: 233m·Timezone: America/Chicago·Population: 27,852