10-day forecast for Alton, MO: 26° to 70°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
67°
Best day: Friday, November 20
47°
Worst day: Friday, November 13
Tap any day below to see morning, afternoon, evening and overnight.
Sat, 1450° / 26°0
Morning34°feels 31°
Afternoon49°feels 49°
Evening36°feels 36°
Overnight29°feels 25°
50 °
Alton, Saturday, 14 November
Overcast. High 50°, low 26°.
Pressure30.30 inHg
Wind2.5 mph E
Humidity53%
Visibility6.2 mi
Dew point26°
Sun, 1552° / 28°0
Morning36°feels 31°
Afternoon52°feels 49°
Evening39°feels 36°
Overnight31°feels 27°
52 °
Alton, Sunday, 15 November
Overcast. High 52°, low 28°.
Pressure30.45 inHg
Wind5.4 mph SE
Humidity47%
Visibility6.2 mi
Dew point29°
Mon, 1656° / 32°0
Morning38°feels 34°
Afternoon56°feels 53°
Evening41°feels 39°
Overnight34°feels 30°
56 °
Alton, Monday, 16 November
Clear. High 56°, low 32°.
Pressure30.50 inHg
Wind3.2 mph SE
Humidity42%
Visibility6.2 mi
Dew point31°
Tue, 1756° / 34°0
Morning41°feels 41°
Afternoon55°feels 53°
Evening44°feels 42°
Overnight36°feels 33°
56 °
Alton, Tuesday, 17 November
Clear. High 56°, low 34°.
Pressure30.47 inHg
Wind4.9 mph SE
Humidity45%
Visibility6.2 mi
Dew point34°
Wed, 1862° / 37°0
Morning43°feels 41°
Afternoon58°feels 56°
Evening51°feels 49°
Overnight47°feels 44°
62 °
Alton, Wednesday, 18 November
Clear. High 62°, low 37°.
Pressure30.33 inHg
Wind9.1 mph SE
Humidity49%
Visibility—
Dew point37°
Thu, 1964° / 47°0.01
Morning50°feels 48°
Afternoon57°feels 56°
Evening55°feels 54°
Overnight55°feels 54°
64 °
Alton, Thursday, 19 November
Light rain. High 64°, low 47°.
Pressure30.27 inHg
Wind7 mph S
Humidity76%
Visibility—
Dew point48°
Fri, 2067° / 50°0
Morning55°feels 54°
Afternoon64°feels 64°
Evening56°feels 55°
Overnight53°feels 52°
67 °
Alton, Friday, 20 November
Partly cloudy. High 67°, low 50°.
Pressure30.30 inHg
Wind9.3 mph SE
Humidity59%
Visibility—
Dew point49°
Sat, 2170° / 52°0.06
Morning57°feels 55°
Afternoon67°feels 66°
Evening65°feels 64°
Overnight60°feels 60°
70 °
Alton, Saturday, 21 November
Light rain. High 70°, low 52°.
Pressure29.91 inHg
Wind16.9 mph S
Humidity43%
Visibility—
Dew point42°
Sun, 2258° / 44°0.02
Morning48°feels 45°
Afternoon55°feels 52°
Evening47°feels 45°
Overnight44°feels 41°
58 °
Alton, Sunday, 22 November
Light rain. High 58°, low 44°.
Pressure30.09 inHg
Wind8 mph N
Humidity41%
Visibility—
Dew point31°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Alton, MO around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.