National Weather Service Forecast for: Alton AL
Issued by: National Weather Service Birmingham, AL
Updated: 1:26 pm CDT May 4, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 78. South wind 5 to 10 mph.
Mostly Sunny

 Tonight

Tonight: Mostly clear, with a low around 52. South wind around 5 mph becoming calm in the evening.
Mostly Clear

 Tuesday

Tuesday: Mostly sunny, with a high near 77. South wind 5 to 15 mph.
Mostly Sunny

 Tuesday
Night
Tuesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. South wind around 10 mph, with gusts as high as 20 mph.
Mostly Cloudy
then Slight
Chance
Showers
 Wednesday

Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. South wind 10 to 15 mph. Chance of precipitation is 60%.
Chance
Showers then
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 61. Chance of precipitation is 100%.
Heavy Rain

 Thursday

Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Showers
Likely

 Thursday
Night
Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Chance
Showers

 Friday

Friday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.
Slight Chance
Showers
Hi 78 °F Lo 52 °F Hi 77 °F Lo 61 °F Hi 80 °F Lo 61 °F Hi 71 °F Lo 48 °F Hi 71 °F

 

This Afternoon
 
 Mostly sunny, with a high near 78. South wind 5 to 10 mph.
Tonight
 
 Mostly clear, with a low around 52. South wind around 5 mph becoming calm in the evening.
Tuesday
 
 Mostly sunny, with a high near 77. South wind 5 to 15 mph.
Tuesday Night
 
 A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
 
 A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. South wind 10 to 15 mph. Chance of precipitation is 60%.
Wednesday Night
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 61. Chance of precipitation is 100%.
Thursday
 
 Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Thursday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Friday
 
 A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.
Friday Night
 
 Partly cloudy, with a low around 52.
Saturday
 
 Mostly sunny, with a high near 77.
Saturday Night
 
 Partly cloudy, with a low around 57.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Alton AL.