National Weather Service Forecast for: Alton AL
Issued by: National Weather Service Birmingham, AL
Updated: 11:31 pm CST Dec 17, 2025
 
Overnight

Overnight: A 40 percent chance of rain after 3am. Cloudy, with a low around 44. Calm wind becoming southeast around 5 mph.
Chance Rain

 Thursday

Thursday: Rain. High near 61. Southeast wind 5 to 15 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Rain

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Low around 36. South wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Showers then
Mostly Clear

 Friday

Friday: Sunny, with a high near 50. Northwest wind 5 to 10 mph.
Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 31. Calm wind.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 60.
Sunny

 Saturday
Night
Saturday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 44.
Partly Cloudy
then Slight
Chance
Showers
 Sunday

Sunday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 61.
Slight Chance
Showers then
Mostly Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 37.
Mostly Clear
Lo 44 °F Hi 61 °F Lo 36 °F Hi 50 °F Lo 31 °F Hi 60 °F Lo 44 °F Hi 61 °F Lo 37 °F

 

Overnight
 
 A 40 percent chance of rain after 3am. Cloudy, with a low around 44. Calm wind becoming southeast around 5 mph.
Thursday
 
 Rain. High near 61. Southeast wind 5 to 15 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Low around 36. South wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 Sunny, with a high near 50. Northwest wind 5 to 10 mph.
Friday Night
 
 Mostly clear, with a low around 31. Calm wind.
Saturday
 
 Sunny, with a high near 60.
Saturday Night
 
 A 20 percent chance of showers after midnight. Partly cloudy, with a low around 44.
Sunday
 
 A 20 percent chance of showers before noon. Mostly sunny, with a high near 61.
Sunday Night
 
 Mostly clear, with a low around 37.
Monday
 
 Mostly sunny, with a high near 58.
Monday Night
 
 Mostly cloudy, with a low around 41.
Tuesday
 
 Partly sunny, with a high near 64.
Tuesday Night
 
 Partly cloudy, with a low around 47.
Wednesday
 
 Partly sunny, with a high near 67.

 

Forecast from NOAA-NWS for Alton AL.