Crystal Lake Weather Forecast 15 Days, Weather in Crystal Lake Today
Current weather conditions and 15 day weather forecast for Crystal Lake, 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 Crystal Lake
| 13 May 2026 Wednesday 16.1 ° C / 61°F  Partly cloudy |
Feels Like : 16.1 ° C / 61°F Humidity : % 42 Pressure : 1016 mb Wind Speed : 19.4 kmph / 12.1 miles from NNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Crystal Lake, IL, USA
Weather Forecast for next 15 Days for Crystal Lake 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 Crystal Lake, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 May 2026 Wednesday | Partly Cloudy |
8.2 ° C (46.8°F) |
16.3 ° C (61.3°F) |
12.4 ° C (54.3°F) |
% 59 | 0% | 5.3 | Sunrise:05:34 AM Sunset: 08:06 PM |
Moonrise:03:28 AM Moonset: 04:36 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday |  Sunny |
4.3 ° C (39.8°F) |
17.7 ° C (63.8°F) |
11 ° C (51.8°F) |
% 63 | 0% | 7.5 | Sunrise:05:33 AM Sunset: 08:07 PM |
Moonrise:03:52 AM Moonset: 05:53 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday |  Moderate rain |
9.2 ° C (48.5°F) |
20.7 ° C (69.2°F) |
14.7 ° C (58.4°F) |
% 79 | 85% | 0.4 | Sunrise:05:32 AM Sunset: 08:08 PM |
Moonrise:04:19 AM Moonset: 07:15 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday |  Patchy rain nearby |
15.6 ° C (60.2°F) |
28.3 ° C (82.9°F) |
20.4 ° C (68.7°F) |
% 75 | 83% | 5 | Sunrise:05:31 AM Sunset: 08:09 PM |
Moonrise:04:53 AM Moonset: 08:37 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Patchy rain nearby |
15.6 ° C (60.2°F) |
26.7 ° C (80°F) |
20 ° C (68°F) |
% 85 | 84% | 5 | Sunrise:05:30 AM Sunset: 08:10 PM |
Moonrise:05:37 AM Moonset: 09:57 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Moderate rain |
19.1 ° C (66.3°F) |
27.2 ° C (80.9°F) |
22.8 ° C (73°F) |
% 81 | 78% | 5 | Sunrise:05:29 AM Sunset: 08:11 PM |
Moonrise:06:33 AM Moonset: 11:06 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday |  Overcast |
10.9 ° C (51.6°F) |
17.7 ° C (63.8°F) |
14.8 ° C (58.6°F) |
% 72 | 0% | 3 | Sunrise:05:29 AM Sunset: 08:12 PM |
Moonrise:07:43 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Sunny |
7 ° C (44.5°F) |
13.7 ° C (56.6°F) |
10.6 ° C (51.2°F) |
% 73 | 0% | 4 | Sunrise:05:28 AM Sunset: 08:13 PM |
Moonrise:09:00 AM Moonset: 12:01 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
6.3 ° C (43.3°F) |
20 ° C (67.9°F) |
13.4 ° C (56.1°F) |
% 65 | 0% | 4 | Sunrise:05:27 AM Sunset: 08:14 PM |
Moonrise:10:18 AM Moonset: 12:43 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Partly Cloudy |
11.2 ° C (52.1°F) |
23.2 ° C (73.8°F) |
17.2 ° C (62.9°F) |
% 71 | 0% | 5 | Sunrise:05:26 AM Sunset: 08:15 PM |
Moonrise:11:34 AM Moonset: 01:16 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Sunny |
14.8 ° C (58.6°F) |
25.9 ° C (78.6°F) |
20.1 ° C (68.1°F) |
% 69 | 0% | 6 | Sunrise:05:25 AM Sunset: 08:16 PM |
Moonrise:12:45 PM Moonset: 01:42 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Patchy rain nearby |
20.1 ° C (68.2°F) |
26.1 ° C (79°F) |
23 ° C (73.5°F) |
% 80 | 81% | 5 | Sunrise:05:24 AM Sunset: 08:16 PM |
Moonrise:01:54 PM Moonset: 02:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday | Moderate rain |
18.4 ° C (65.1°F) |
28.2 ° C (82.7°F) |
22.7 ° C (72.9°F) |
% 85 | 88% | 5 | Sunrise:05:24 AM Sunset: 08:17 PM |
Moonrise:02:59 PM Moonset: 02:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 May 2026 Tuesday | Moderate rain |
17.5 ° C (63.5°F) |
22.5 ° C (72.4°F) |
20.5 ° C (68.8°F) |
% 94 | 89% | 5 | Sunrise:05:23 AM Sunset: 08:18 PM |
Moonrise:04:03 PM Moonset: 02:43 AM Moon Phase ( Waxing Gibbous ) |
|
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