Duncan Weather Forecast 15 Days, Weather in Duncan Today
Current weather conditions and 15 day weather forecast for Duncan, 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 Duncan
| 15 December 2025 Monday -1 ° C / 30.2°F  Sunny |
Feels Like : -5.9 ° C / 21.4°F Humidity : % 69 Pressure : 1018 mb Wind Speed : 16.2 kmph / 10.1 miles from WSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Duncan, IL, USA
Weather Forecast for next 15 Days for Duncan 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 Duncan, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday | Sunny |
-19.7 ° C (-3.5°F) |
1.1 ° C (34°F) |
-9.2 ° C (15.4°F) |
% 74 | 0% | 0.4 | Sunrise:07:22 AM Sunset: 04:35 PM |
Moonrise:03:21 AM Moonset: 01:34 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Mist |
-10.5 ° C (13.1°F) |
4.2 ° C (39.6°F) |
-3.7 ° C (25.4°F) |
% 92 | 0% | 0.4 | Sunrise:07:23 AM Sunset: 04:35 PM |
Moonrise:04:24 AM Moonset: 02:00 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Freezing fog |
-2.6 ° C (27.3°F) |
-0.4 ° C (31.3°F) |
-1.2 ° C (29.8°F) |
% 96 | 0% | 0.3 | Sunrise:07:23 AM Sunset: 04:35 PM |
Moonrise:05:28 AM Moonset: 02:32 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Moderate rain |
-8.5 ° C (16.6°F) |
9.9 ° C (49.8°F) |
1.8 ° C (35.2°F) |
% 79 | 72% | 0.2 | Sunrise:07:24 AM Sunset: 04:36 PM |
Moonrise:06:29 AM Moonset: 03:12 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Partly Cloudy |
-10.4 ° C (13.3°F) |
-3.9 ° C (25°F) |
-7.3 ° C (18.8°F) |
% 60 | 0% | 0 | Sunrise:07:24 AM Sunset: 04:36 PM |
Moonrise:07:27 AM Moonset: 03:59 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Patchy rain nearby |
-1.7 ° C (28.9°F) |
6.1 ° C (43°F) |
1.6 ° C (34.9°F) |
% 67 | 65% | 1 | Sunrise:07:25 AM Sunset: 04:37 PM |
Moonrise:08:18 AM Moonset: 04:55 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Sunny |
-7.4 ° C (18.7°F) |
-2.3 ° C (27.8°F) |
-4.8 ° C (23.4°F) |
% 82 | 0% | 2 | Sunrise:07:26 AM Sunset: 04:37 PM |
Moonrise:09:02 AM Moonset: 05:58 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-7.2 ° C (19°F) |
4.5 ° C (40.2°F) |
-0.9 ° C (30.4°F) |
% 71 | 0% | 2 | Sunrise:07:26 AM Sunset: 04:38 PM |
Moonrise:09:39 AM Moonset: 07:04 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Sunny |
2.3 ° C (36.2°F) |
8.2 ° C (46.7°F) |
4.6 ° C (40.3°F) |
% 73 | 0% | 2 | Sunrise:07:26 AM Sunset: 04:38 PM |
Moonrise:10:09 AM Moonset: 08:11 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Sunny |
-3.5 ° C (25.8°F) |
1.3 ° C (34.3°F) |
-0.4 ° C (31.2°F) |
% 68 | 0% | 2 | Sunrise:07:27 AM Sunset: 04:39 PM |
Moonrise:10:34 AM Moonset: 09:18 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Light freezing rain |
-5.6 ° C (21.9°F) |
-0.5 ° C (31.1°F) |
-2.8 ° C (27°F) |
% 43 | 60% | 1 | Sunrise:07:27 AM Sunset: 04:40 PM |
Moonrise:10:57 AM Moonset: 10:25 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Cloudy |
-11.2 ° C (11.8°F) |
-3.4 ° C (25.9°F) |
-5.4 ° C (22.3°F) |
% 58 | 0% | 1 | Sunrise:07:28 AM Sunset: 04:40 PM |
Moonrise:11:19 AM Moonset: 11:34 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Light freezing rain |
-13.2 ° C (8.3°F) |
-8.1 ° C (17.5°F) |
-10.8 ° C (12.6°F) |
% 52 | 80% | 1 | Sunrise:07:28 AM Sunset: 04:41 PM |
Moonrise:11:40 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Patchy moderate snow |
-10.5 ° C (13.2°F) |
-2.6 ° C (27.3°F) |
-6 ° C (21.3°F) |
% 81 | 73% | 1 | Sunrise:07:28 AM Sunset: 04:42 PM |
Moonrise:12:03 PM Moonset: 12:44 AM Moon Phase ( Waxing Gibbous ) |
|
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