Somerset Weather Forecast 15 Days, Weather in Somerset Today
Current weather conditions and 15 day weather forecast for Somerset, 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 Somerset
| 17 December 2025 Wednesday 7.8 ° C / 46°F  Clear |
Feels Like : 4.4 ° C / 39.9°F Humidity : % 38 Pressure : 1017 mb Wind Speed : 22 kmph / 13.6 miles from SSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Somerset, IL, USA
Weather Forecast for next 15 Days for Somerset 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 Somerset, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 December 2025 Wednesday |  Partly Cloudy |
1.7 ° C (35.1°F) |
10.7 ° C (51.3°F) |
6.1 ° C (42.9°F) |
% 75 | 0% | 0.4 | Sunrise:07:07 AM Sunset: 04:40 PM |
Moonrise:05:09 AM Moonset: 02:38 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Heavy rain |
2.7 ° C (36.9°F) |
10.2 ° C (50.4°F) |
8.5 ° C (47.3°F) |
% 95 | 88% | 0.1 | Sunrise:07:07 AM Sunset: 04:40 PM |
Moonrise:06:09 AM Moonset: 03:19 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Cloudy |
-2.8 ° C (27°F) |
3.1 ° C (37.6°F) |
0.4 ° C (32.7°F) |
% 68 | 0% | 0.4 | Sunrise:07:08 AM Sunset: 04:41 PM |
Moonrise:07:07 AM Moonset: 04:07 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
0.2 ° C (32.4°F) |
11.3 ° C (52.3°F) |
5 ° C (41°F) |
% 63 | 0% | 0.4 | Sunrise:07:09 AM Sunset: 04:41 PM |
Moonrise:07:58 AM Moonset: 05:03 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Sunny |
0.3 ° C (32.6°F) |
8.8 ° C (47.8°F) |
2.8 ° C (37.1°F) |
% 67 | 0% | 0 | Sunrise:07:09 AM Sunset: 04:42 PM |
Moonrise:08:43 AM Moonset: 06:04 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Overcast |
-0.9 ° C (30.5°F) |
2.3 ° C (36.1°F) |
1 ° C (33.9°F) |
% 55 | 0% | 1 | Sunrise:07:10 AM Sunset: 04:42 PM |
Moonrise:09:22 AM Moonset: 07:08 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy rain nearby |
2.6 ° C (36.7°F) |
9.2 ° C (48.5°F) |
6.5 ° C (43.7°F) |
% 84 | 89% | 2 | Sunrise:07:10 AM Sunset: 04:43 PM |
Moonrise:09:54 AM Moonset: 08:12 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
11.6 ° C (52.9°F) |
18.2 ° C (64.8°F) |
15.6 ° C (60.1°F) |
% 92 | 85% | 4 | Sunrise:07:10 AM Sunset: 04:43 PM |
Moonrise:10:22 AM Moonset: 09:17 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
16.7 ° C (62°F) |
22.6 ° C (72.7°F) |
19.1 ° C (66.3°F) |
% 81 | 72% | 4 | Sunrise:07:11 AM Sunset: 04:44 PM |
Moonrise:10:47 AM Moonset: 10:21 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Overcast |
16.9 ° C (62.5°F) |
19.5 ° C (67°F) |
18 ° C (64.4°F) |
% 86 | 0% | 4 | Sunrise:07:11 AM Sunset: 04:44 PM |
Moonrise:11:12 AM Moonset: 11:27 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Patchy rain nearby |
6.8 ° C (44.3°F) |
17.9 ° C (64.2°F) |
15 ° C (59.1°F) |
% 84 | 88% | 4 | Sunrise:07:12 AM Sunset: 04:45 PM |
Moonrise:11:36 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
3 ° C (37.3°F) |
13.2 ° C (55.8°F) |
7.5 ° C (45.5°F) |
% 56 | 0% | 3 | Sunrise:07:12 AM Sunset: 04:46 PM |
Moonrise:12:02 PM Moonset: 12:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
3.8 ° C (38.9°F) |
12.7 ° C (54.9°F) |
7.5 ° C (45.5°F) |
% 52 | 0% | 3 | Sunrise:07:12 AM Sunset: 04:47 PM |
Moonrise:12:31 PM Moonset: 01:46 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
6.5 ° C (43.7°F) |
16.7 ° C (62.1°F) |
10.3 ° C (50.5°F) |
% 54 | 0% | 4 | Sunrise:07:12 AM Sunset: 04:47 PM |
Moonrise:01:07 PM Moonset: 03:00 AM Moon Phase ( Waxing Gibbous ) |
|
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