Round Lake Park Weather Forecast 15 Days, Weather in Round Lake Park Today
Current weather conditions and 15 day weather forecast for Round Lake Park, Illinois, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Round Lake Park
| 12 May 2026 Tuesday 22.2 ° C / 72°F  Sunny |
Feels Like : 23.6 ° C / 74.5°F Humidity : % 40 Pressure : 1008 mb Wind Speed : 28.1 kmph / 17.4 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Round Lake Park, IL, USA
Weather Forecast for next 15 Days for Round Lake Park including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Round Lake Park, Illinois state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 12 May 2026 Tuesday |  Patchy rain nearby |
2.8 ° C (37°F) |
26.9 ° C (80.4°F) |
14.6 ° C (58.4°F) |
% 54 | 81% | 5 | Sunrise:05:34 AM Sunset: 08:04 PM |
Moonrise:03:06 AM Moonset: 03:22 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday |  Cloudy |
6.9 ° C (44.5°F) |
10.9 ° C (51.5°F) |
9.6 ° C (49.4°F) |
% 72 | 0% | 3.9 | Sunrise:05:33 AM Sunset: 08:05 PM |
Moonrise:03:27 AM Moonset: 04:34 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
4.3 ° C (39.7°F) |
17.4 ° C (63.3°F) |
10.1 ° C (50.2°F) |
% 65 | 0% | 7.5 | Sunrise:05:32 AM Sunset: 08:06 PM |
Moonrise:03:50 AM Moonset: 05:52 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Patchy rain nearby |
8.4 ° C (47.2°F) |
20.2 ° C (68.3°F) |
14.5 ° C (58.1°F) |
% 79 | 88% | 0.4 | Sunrise:05:31 AM Sunset: 08:07 PM |
Moonrise:04:17 AM Moonset: 07:14 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
13.4 ° C (56.2°F) |
27.9 ° C (82.2°F) |
20.6 ° C (69°F) |
% 58 | 0% | 6 | Sunrise:05:30 AM Sunset: 08:08 PM |
Moonrise:04:52 AM Moonset: 08:37 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday |  Partly Cloudy |
15.9 ° C (60.6°F) |
28.1 ° C (82.6°F) |
21.4 ° C (70.5°F) |
% 68 | 0% | 6 | Sunrise:05:29 AM Sunset: 08:09 PM |
Moonrise:05:36 AM Moonset: 09:56 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Patchy rain nearby |
17.2 ° C (63°F) |
27.5 ° C (81.5°F) |
22.5 ° C (72.6°F) |
% 80 | 85% | 5 | Sunrise:05:28 AM Sunset: 08:10 PM |
Moonrise:06:32 AM Moonset: 11:06 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday |  Moderate rain |
9.5 ° C (49.1°F) |
23.3 ° C (73.9°F) |
19.2 ° C (66.6°F) |
% 81 | 85% | 4 | Sunrise:05:27 AM Sunset: 08:11 PM |
Moonrise:07:41 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday |  Overcast |
14 ° C (57.1°F) |
19 ° C (66.3°F) |
16.4 ° C (61.5°F) |
% 85 | 0% | 4 | Sunrise:05:26 AM Sunset: 08:12 PM |
Moonrise:08:58 AM Moonset: 12:01 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Patchy rain nearby |
14.5 ° C (58.2°F) |
23.7 ° C (74.7°F) |
19 ° C (66.2°F) |
% 81 | 87% | 4 | Sunrise:05:25 AM Sunset: 08:13 PM |
Moonrise:10:17 AM Moonset: 12:42 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Patchy rain nearby |
12.5 ° C (54.5°F) |
23.3 ° C (73.9°F) |
17.5 ° C (63.5°F) |
% 77 | 87% | 4 | Sunrise:05:25 AM Sunset: 08:14 PM |
Moonrise:11:33 AM Moonset: 01:15 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
18.1 ° C (64.6°F) |
25.5 ° C (77.9°F) |
20.9 ° C (69.7°F) |
% 89 | 86% | 5 | Sunrise:05:24 AM Sunset: 08:15 PM |
Moonrise:12:44 PM Moonset: 01:41 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Sunny |
13.4 ° C (56.1°F) |
21 ° C (69.9°F) |
17.1 ° C (62.8°F) |
% 73 | 0% | 5 | Sunrise:05:23 AM Sunset: 08:16 PM |
Moonrise:01:52 PM Moonset: 02:02 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday | Sunny |
11.9 ° C (53.4°F) |
20.4 ° C (68.8°F) |
16 ° C (60.7°F) |
% 69 | 0% | 5 | Sunrise:05:22 AM Sunset: 08:16 PM |
Moonrise:02:58 PM Moonset: 02:22 AM Moon Phase ( Waxing Gibbous ) |
|
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