Alton Weather Forecast 15 Days, Weather in Alton Today
Current weather conditions and 15 day weather forecast for Alton, Indiana, 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 Alton
| 20 December 2025 Saturday 13.2 ° C / 55.8°F  Sunny |
Feels Like : 11.1 ° C / 52°F Humidity : % 27 Pressure : 1010 mb Wind Speed : 24.5 kmph / 15.2 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Alton, IN, USA
Weather Forecast for next 15 Days for Alton 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 Alton, Indiana 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 20 December 2025 Saturday | Sunny |
-1.5 ° C (29.3°F) |
12 ° C (53.6°F) |
4.2 ° C (39.6°F) |
% 69 | 0% | 0.4 | Sunrise:07:58 AM Sunset: 05:29 PM |
Moonrise:08:48 AM Moonset: 05:49 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Partly Cloudy |
-2.2 ° C (28°F) |
2.6 ° C (36.7°F) |
0.4 ° C (32.7°F) |
% 79 | 0% | 0.4 | Sunrise:07:59 AM Sunset: 05:29 PM |
Moonrise:09:33 AM Moonset: 06:50 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Overcast |
-1.9 ° C (28.6°F) |
9.4 ° C (48.9°F) |
3.2 ° C (37.7°F) |
% 63 | 0% | 0.3 | Sunrise:07:59 AM Sunset: 05:30 PM |
Moonrise:10:11 AM Moonset: 07:54 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Moderate rain |
7.2 ° C (45°F) |
11.5 ° C (52.6°F) |
9.7 ° C (49.5°F) |
% 94 | 82% | 0.1 | Sunrise:08:00 AM Sunset: 05:30 PM |
Moonrise:10:43 AM Moonset: 08:59 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Patchy rain nearby |
11.2 ° C (52.2°F) |
15 ° C (59°F) |
12.4 ° C (54.4°F) |
% 98 | 87% | 0 | Sunrise:08:00 AM Sunset: 05:31 PM |
Moonrise:11:11 AM Moonset: 10:04 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Overcast |
14.4 ° C (57.8°F) |
19.6 ° C (67.3°F) |
16.8 ° C (62.2°F) |
% 85 | 0% | 4 | Sunrise:08:00 AM Sunset: 05:31 PM |
Moonrise:11:36 AM Moonset: 11:09 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Overcast |
13.5 ° C (56.4°F) |
19.3 ° C (66.7°F) |
16.1 ° C (61.1°F) |
% 85 | 0% | 4 | Sunrise:08:01 AM Sunset: 05:32 PM |
Moonrise:12:00 PM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Patchy rain nearby |
15.1 ° C (59.3°F) |
18.5 ° C (65.4°F) |
16.7 ° C (62°F) |
% 94 | 80% | 4 | Sunrise:08:01 AM Sunset: 05:33 PM |
Moonrise:12:24 PM Moonset: 12:15 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Moderate rain |
9.9 ° C (49.9°F) |
14.5 ° C (58.1°F) |
13 ° C (55.3°F) |
% 95 | 89% | 3 | Sunrise:08:01 AM Sunset: 05:34 PM |
Moonrise:12:49 PM Moonset: 01:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
1.7 ° C (35.1°F) |
7.2 ° C (44.9°F) |
6 ° C (42.7°F) |
% 85 | 79% | 2 | Sunrise:08:02 AM Sunset: 05:34 PM |
Moonrise:01:19 PM Moonset: 02:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
-0.5 ° C (31.1°F) |
5.2 ° C (41.3°F) |
1.5 ° C (34.7°F) |
% 76 | 0% | 2 | Sunrise:08:02 AM Sunset: 05:35 PM |
Moonrise:01:54 PM Moonset: 03:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-1.4 ° C (29.5°F) |
7.6 ° C (45.7°F) |
2.1 ° C (35.8°F) |
% 78 | 0% | 2 | Sunrise:08:02 AM Sunset: 05:36 PM |
Moonrise:02:38 PM Moonset: 05:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Sunny |
-0.5 ° C (31.2°F) |
11 ° C (51.8°F) |
4.5 ° C (40°F) |
% 83 | 0% | 2 | Sunrise:08:02 AM Sunset: 05:37 PM |
Moonrise:03:34 PM Moonset: 06:24 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Sunny |
3.1 ° C (37.5°F) |
11.5 ° C (52.7°F) |
7.4 ° C (45.4°F) |
% 83 | 0% | 3 | Sunrise:08:02 AM Sunset: 05:37 PM |
Moonrise:04:41 PM Moonset: 07:35 AM Moon Phase ( Waxing Gibbous ) |
|
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