Current weather conditions and 15 day weather forecast for Forest 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.
| 19 September 2026 Saturday 15.7 ° C / 60.2°F ![]() Light rain shower |
Feels Like : 13.9 ° C / 57°F Humidity : % 91 Pressure : 1018 mb Wind Speed : 15.8 kmph / 9.8 miles from ESE ![]() Visibility : 10 km Precipitation (rainfall) : 0.8 mm Cloud (%) : 100 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19 September 2026 Saturday | Light rain shower |
14.6 ° C (58.2°F) |
18.9 ° C (66°F) |
16.5 ° C (61.7°F) |
% 94 | 93% | 1.2 | Sunrise:06:36 AM Sunset: 06:55 PM |
Moonrise:03:42 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday | Light rain shower |
15 ° C (59°F) |
17.8 ° C (64.1°F) |
16.4 ° C (61.4°F) |
% 96 | 94% | 1.2 | Sunrise:06:37 AM Sunset: 06:53 PM |
Moonrise:04:18 PM Moonset: 12:25 AM Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Light rain shower |
11.8 ° C (53.3°F) |
15.3 ° C (59.6°F) |
13.2 ° C (55.8°F) |
% 89 | 91% | 0.5 | Sunrise:06:38 AM Sunset: 06:51 PM |
Moonrise:04:48 PM Moonset: 01:28 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday | Overcast |
12.2 ° C (53.9°F) |
16.1 ° C (61°F) |
13.4 ° C (56.2°F) |
% 71 | 34% | 3 | Sunrise:06:39 AM Sunset: 06:50 PM |
Moonrise:05:12 PM Moonset: 02:32 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Overcast |
13.3 ° C (55.9°F) |
16.3 ° C (61.3°F) |
14.7 ° C (58.4°F) |
% 76 | 22% | 4 | Sunrise:06:40 AM Sunset: 06:48 PM |
Moonrise:05:34 PM Moonset: 03:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Sunny |
11.6 ° C (52.8°F) |
14.7 ° C (58.4°F) |
13.3 ° C (55.9°F) |
% 83 | 16% | 4 | Sunrise:06:41 AM Sunset: 06:46 PM |
Moonrise:05:53 PM Moonset: 04:38 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday | Sunny |
11.8 ° C (53.2°F) |
18.1 ° C (64.5°F) |
14.5 ° C (58.1°F) |
% 75 | 9% | 5 | Sunrise:06:42 AM Sunset: 06:44 PM |
Moonrise:06:12 PM Moonset: 05:41 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Sunny |
13.2 ° C (55.7°F) |
19.9 ° C (67.8°F) |
15.9 ° C (60.6°F) |
% 69 | 8% | 5 | Sunrise:06:44 AM Sunset: 06:43 PM |
Moonrise:06:31 PM Moonset: 06:44 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday | Sunny |
14.1 ° C (57.3°F) |
20.6 ° C (69.1°F) |
17.1 ° C (62.8°F) |
% 67 | 8% | 6 | Sunrise:06:45 AM Sunset: 06:41 PM |
Moonrise:06:52 PM Moonset: 07:49 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Overcast |
15.8 ° C (60.4°F) |
20.3 ° C (68.5°F) |
17 ° C (62.7°F) |
% 78 | 50% | 5 | Sunrise:06:46 AM Sunset: 06:39 PM |
Moonrise:07:16 PM Moonset: 08:56 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday | Patchy rain nearby |
13.3 ° C (55.9°F) |
15.6 ° C (60.1°F) |
14.5 ° C (58.2°F) |
% 94 | 81% | 4 | Sunrise:06:47 AM Sunset: 06:37 PM |
Moonrise:07:45 PM Moonset: 10:06 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday | Patchy rain nearby |
12 ° C (53.7°F) |
13.5 ° C (56.3°F) |
12.7 ° C (54.9°F) |
% 92 | 88% | 3 | Sunrise:06:48 AM Sunset: 06:36 PM |
Moonrise:08:21 PM Moonset: 11:17 AM Moon Phase ( Waning Gibbous ) |
|
| 01 October 2026 Thursday | Patchy rain nearby |
12 ° C (53.7°F) |
15.8 ° C (60.4°F) |
13.3 ° C (55.9°F) |
% 92 | 88% | 4 | Sunrise:06:49 AM Sunset: 06:34 PM |
Moonrise:09:07 PM Moonset: 12:28 PM Moon Phase ( Last Quarter ) |
|
| 02 October 2026 Friday | Patchy rain nearby |
13.5 ° C (56.3°F) |
16.6 ° C (61.8°F) |
15.1 ° C (59.1°F) |
% 90 | 55% | 4 | Sunrise:06:50 AM Sunset: 06:32 PM |
Moonrise:10:05 PM Moonset: 01:33 PM Moon Phase ( Last Quarter ) |
|