10-Day Weather Forecast for Alton, IL - The Weather Channel | weather.com (2024)

Tue 23 | Day

Cloudy with occasional rain during the afternoon. Thunder possible. High 66F. Winds WSW at 10 to 20 mph. Chance of rain 80%.

• Humidity54%

• UV Index3 of 11

• Sunrise6:12 am

• Sunset7:45 pm

Tue 23 | Night

Mostly clear. Low near 45F. Winds NW at 5 to 10 mph.

• Humidity79%

• UV Index0 of 11

• Moonrise7:47 pm

  Full Moon

• Moonset5:54 am

Wed 24 | Day

Mostly sunny skies. High 68F. Winds N at 5 to 10 mph.

• Humidity50%

• UV Index8 of 11

• Sunrise6:10 am

• Sunset7:46 pm

Wed 24 | Night

Generally fair. Low 44F. Winds ENE at 5 to 10 mph.

• Humidity66%

• UV Index0 of 11

• Moonrise8:51 pm

  Full Moon

• Moonset6:19 am

Thu 25 | Day

Partly cloudy. High 71F. Winds ESE at 10 to 15 mph.

• Humidity48%

• UV Index8 of 11

• Sunrise6:09 am

• Sunset7:47 pm

Thu 25 | Night

Cloudy with occasional light rain after midnight. Low 54F. Winds ESE at 10 to 15 mph. Chance of rain 80%.

• Humidity58%

• UV Index0 of 11

• Moonrise9:57 pm

  Waning Gibbous

• Moonset6:47 am

Fri 26 | Day

Becoming windy with showers and thunderstorms likely. Potential for severe thunderstorms. High 76F. Winds SSE at 20 to 30 mph. Chance of rain 100%.

• Humidity72%

• UV Index3 of 11

• Sunrise6:08 am

• Sunset7:48 pm

Fri 26 | Night

Thunderstorms likely in the evening. Then a chance of scattered thunderstorms later on. Low near 65F. Winds S at 15 to 25 mph. Chance of rain 70%.

• Humidity76%

• UV Index0 of 11

• Moonrise11:03 pm

  Waning Gibbous

• Moonset7:21 am

Sat 27 | Day

Partly cloudy and windy. A stray shower or thunderstorm is possible. High 83F. Winds SSW at 20 to 30 mph.

• Humidity59%

• UV Index7 of 11

• Sunrise6:06 am

• Sunset7:49 pm

Sat 27 | Night

Variably cloudy with scattered thunderstorms. Low 68F. Winds S at 10 to 20 mph. Chance of rain 40%.

• Humidity66%

• UV Index0 of 11

• Moonrise--

  Waning Gibbous

• Moonset8:05 am

Sun 28 | Day

Windy with scattered thunderstorms. Potential for severe thunderstorms. High 81F. Winds S at 20 to 30 mph. Chance of rain 50%.

• Humidity60%

• UV Index5 of 11

• Sunrise6:05 am

• Sunset7:50 pm

Sun 28 | Night

Showers and thunderstorms likely. Low around 60F. Winds SSW at 15 to 25 mph. Chance of rain 80%.

• Humidity75%

• UV Index0 of 11

• Moonrise12:07 am

  Waning Gibbous

• Moonset8:58 am

Mon 29 | Day

Showers in the morning, then partly cloudy in the afternoon. High around 75F. Winds WSW at 10 to 20 mph. Chance of rain 50%.

• Humidity61%

• UV Index8 of 11

• Sunrise6:04 am

• Sunset7:51 pm

Mon 29 | Night

Cloudy with a few showers. Low 53F. Winds WNW at 10 to 15 mph. Chance of rain 30%.

• Humidity78%

• UV Index0 of 11

• Moonrise1:03 am

  Waning Gibbous

• Moonset10:00 am

Tue 30 | Day

Mostly sunny. High 77F. Winds WNW at 10 to 15 mph.

• Humidity54%

• UV Index8 of 11

• Sunrise6:03 am

• Sunset7:52 pm

Tue 30 | Night

Mostly clear. Low 57F. Winds S at 5 to 10 mph.

• Humidity72%

• UV Index0 of 11

• Moonrise1:52 am

  Waning Gibbous

• Moonset11:10 am

Wed 01 | Day

Partly cloudy skies during the morning hours will give way to occasional showers in the afternoon. High 81F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

• Humidity54%

• UV Index8 of 11

• Sunrise6:02 am

• Sunset7:53 pm

Wed 01 | Night

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 58F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

• Humidity69%

• UV Index0 of 11

• Moonrise2:33 am

  Last Quarter

• Moonset12:23 pm

Thu 02 | Day

Intervals of clouds and sunshine. High 79F. Winds SW at 10 to 15 mph.

• Humidity54%

• UV Index6 of 11

• Sunrise6:00 am

• Sunset7:54 pm

Thu 02 | Night

Overcast with rain showers at times. Low 56F. Winds S at 5 to 10 mph. Chance of rain 50%.

• Humidity69%

• UV Index0 of 11

• Moonrise3:06 am

  Waning Crescent

• Moonset1:37 pm

Fri 03 | Day

Showers in the morning, then partly cloudy in the afternoon. High 77F. Winds WSW at 10 to 20 mph. Chance of rain 50%.

• Humidity54%

• UV Index8 of 11

• Sunrise5:59 am

• Sunset7:55 pm

Fri 03 | Night

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 56F. Winds SW at 10 to 15 mph. Chance of rain 40%.

• Humidity68%

• UV Index0 of 11

• Moonrise3:35 am

  Waning Crescent

• Moonset2:52 pm

Sat 04 | Day

Rain showers early with mostly cloudy conditions later in the day. High 77F. Winds WNW at 10 to 20 mph. Chance of rain 40%.

• Humidity55%

• UV Index8 of 11

• Sunrise5:58 am

• Sunset7:56 pm

Sat 04 | Night

Mostly cloudy skies early with showers developing late. Low 56F. NW winds shifting to SSW at 10 to 15 mph. Chance of rain 40%.

• Humidity69%

• UV Index0 of 11

• Moonrise4:02 am

  Waning Crescent

• Moonset4:06 pm

Sun 05 | Day

Rain showers early with mostly cloudy conditions later in the day. High 78F. Winds SW at 10 to 15 mph. Chance of rain 40%.

• Humidity55%

• UV Index8 of 11

• Sunrise5:57 am

• Sunset7:57 pm

Sun 05 | Night

Partly cloudy skies early giving way to a few showers after midnight. Low 57F. Winds SSW at 5 to 10 mph. Chance of rain 30%.

• Humidity70%

• UV Index0 of 11

• Moonrise4:28 am

  Waning Crescent

• Moonset5:20 pm

Mon 06 | Day

Rain showers early with some sunshine later in the day. High 79F. Winds SW at 10 to 20 mph. Chance of rain 40%.

• Humidity55%

• UV Index8 of 11

• Sunrise5:56 am

• Sunset7:58 pm

Mon 06 | Night

A few clouds from time to time. Low 58F. Winds S at 10 to 15 mph.

• Humidity68%

• UV Index0 of 11

• Moonrise4:54 am

  Waning Crescent

• Moonset6:36 pm

Tue 07 | Day

Sunshine and clouds mixed. High near 80F. Winds SW at 10 to 15 mph.

• Humidity51%

• UV Index8 of 11

• Sunrise5:55 am

• Sunset7:59 pm

Tue 07 | Night

Increasing clouds with showers arriving sometime after midnight. Low 58F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

• Humidity66%

• UV Index0 of 11

• Moonrise5:23 am

  New Moon

• Moonset7:53 pm