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
| 17 December 2025 Wednesday 8.2 ° C / 46.8°F  Overcast |
Feels Like : 5.6 ° C / 42.1°F Humidity : % 30 Pressure : 1017 mb Wind Speed : 15.8 kmph / 9.8 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 December 2025 Wednesday |  Sunny |
1.9 ° C (35.4°F) |
12.7 ° C (54.9°F) |
6.3 ° C (43.4°F) |
% 65 | 0% | 0.4 | Sunrise:07:56 AM Sunset: 05:27 PM |
Moonrise:05:59 AM Moonset: 03:25 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Heavy rain |
5.9 ° C (42.6°F) |
10.2 ° C (50.4°F) |
8 ° C (46.4°F) |
% 89 | 82% | 0.1 | Sunrise:07:57 AM Sunset: 05:28 PM |
Moonrise:06:59 AM Moonset: 04:05 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate or heavy snow showers |
-2.7 ° C (27.1°F) |
-0.1 ° C (31.8°F) |
0.1 ° C (32.1°F) |
% 79 | 78% | 0.4 | Sunrise:07:58 AM Sunset: 05:28 PM |
Moonrise:07:56 AM Moonset: 04:54 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-2.2 ° C (28.1°F) |
9.8 ° C (49.7°F) |
2.7 ° C (36.8°F) |
% 70 | 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 | Sunny |
-2.7 ° C (27.1°F) |
7.2 ° C (45°F) |
0.9 ° C (33.6°F) |
% 79 | 0% | 0 | Sunrise:07:59 AM Sunset: 05:29 PM |
Moonrise:09:33 AM Moonset: 06:50 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Partly Cloudy |
-2.9 ° C (26.8°F) |
5.1 ° C (41.2°F) |
1 ° C (33.8°F) |
% 52 | 0% | 2 | Sunrise:07:59 AM Sunset: 05:30 PM |
Moonrise:10:11 AM Moonset: 07:54 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy rain nearby |
4.4 ° C (39.9°F) |
10.3 ° C (50.5°F) |
8.3 ° C (47°F) |
% 76 | 66% | 2 | 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 |
11.6 ° C (53°F) |
17.3 ° C (63.2°F) |
14.5 ° C (58.1°F) |
% 91 | 87% | 3 | Sunrise:08:00 AM Sunset: 05:31 PM |
Moonrise:11:11 AM Moonset: 10:04 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
15.3 ° C (59.6°F) |
16.9 ° C (62.5°F) |
16 ° C (60.8°F) |
% 92 | 71% | 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 | Partly Cloudy |
4.7 ° C (40.5°F) |
9.8 ° C (49.6°F) |
8.3 ° C (47°F) |
% 70 | 0% | 3 | 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 |
1.1 ° C (34°F) |
4.9 ° C (40.7°F) |
3.4 ° C (38.2°F) |
% 83 | 83% | 1 | Sunrise:08:01 AM Sunset: 05:33 PM |
Moonrise:12:24 PM Moonset: 12:15 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
-1.6 ° C (29°F) |
6.8 ° C (44.2°F) |
2.3 ° C (36.2°F) |
% 81 | 0% | 2 | Sunrise:08:01 AM Sunset: 05:34 PM |
Moonrise:12:49 PM Moonset: 01:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday |  Moderate rain |
1.4 ° C (34.4°F) |
9.7 ° C (49.4°F) |
6.8 ° C (44.3°F) |
% 92 | 86% | 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 | Patchy rain nearby |
7 ° C (44.6°F) |
11.7 ° C (53.1°F) |
9.6 ° C (49.3°F) |
% 89 | 87% | 2 | Sunrise:08:02 AM Sunset: 05:35 PM |
Moonrise:01:54 PM Moonset: 03:49 AM Moon Phase ( Waxing Gibbous ) |
|
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