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As of 11:52 CST

Weather in Alton, IL

58°Current weather

Alton, Sunday, 8 November, 11:52

Clear. Feels like 57°. High 60°, low 35°.

Pressure30.12 inHg
Wind7.5 mph W
Humidity71%
Visibility6.2 mi
Dew point49°

10-day forecast for Alton, IL: 30° to 70°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

66°
Best day: Tuesday, November 10
45°
Worst day: Friday, November 13

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 0965° / 37°0Clear
MorningOvercast45°feels 43°
AfternoonClear65°feels 64°
EveningClear44°feels 42°
OvernightClear41°feels 37°
65 °Clear

Alton, Monday, 9 November

Clear. High 65°, low 37°.

Pressure30.18 inHg
Wind3 mph SW
Humidity53%
Visibility6.2 mi
Dew point44°
Tue, 1066° / 46°0Clear
MorningClear50°feels 47°
AfternoonClear66°feels 65°
EveningClear53°feels 52°
OvernightClear49°feels 46°
66 °Clear

Alton, Tuesday, 10 November

Clear. High 66°, low 46°.

Pressure30.09 inHg
Wind3.8 mph W
Humidity61%
Visibility6.2 mi
Dew point50°
Wed, 1163° / 48°0Overcast
MorningOvercast52°feels 52°
AfternoonOvercast63°feels 62°
EveningPartly cloudy53°feels 51°
OvernightClear49°feels 47°
63 °Overcast

Alton, Wednesday, 11 November

Overcast. High 63°, low 48°.

Pressure29.83 inHg
Wind13.7 mph W
Humidity68%
Visibility6.2 mi
Dew point52°
Thu, 1248° / 42°0Overcast
MorningPartly cloudy46°feels 40°
AfternoonOvercast48°feels 42°
EveningOvercast44°feels 39°
OvernightOvercast46°feels 41°
48 °Overcast

Alton, Thursday, 12 November

Overcast. High 48°, low 42°.

Pressure29.97 inHg
Wind12.8 mph NW
Humidity51%
Visibility—
Dew point31°
Fri, 1345° / 33°0Clear
MorningClear36°feels 31°
AfternoonClear43°feels 38°
EveningClear38°feels 34°
OvernightClear34°feels 30°
45 °Clear

Alton, Friday, 13 November

Clear. High 45°, low 33°.

Pressure30.06 inHg
Wind9.1 mph N
Humidity59%
Visibility—
Dew point29°
Sat, 1449° / 30°0Clear
MorningClear34°feels 29°
AfternoonClear46°feels 41°
EveningClear43°feels 40°
OvernightClear39°feels 35°
49 °Clear

Alton, Saturday, 14 November

Clear. High 49°, low 30°.

Pressure30.09 inHg
Wind8.9 mph W
Humidity37%
Visibility—
Dew point19°
Sun, 1563° / 39°0Mostly clear
MorningMostly clear44°feels 41°
AfternoonMostly clear58°feels 55°
EveningMostly clear54°feels 52°
OvernightMostly clear49°feels 47°
63 °Mostly clear

Alton, Sunday, 15 November

Mostly clear. High 63°, low 39°.

Pressure30.00 inHg
Wind8.9 mph W
Humidity45%
Visibility—
Dew point35°
Mon, 1665° / 47°0Overcast
MorningOvercast52°feels 51°
AfternoonOvercast62°feels 61°
EveningOvercast58°feels 56°
OvernightOvercast55°feels 54°
65 °Overcast

Alton, Monday, 16 November

Overcast. High 65°, low 47°.

Pressure30.03 inHg
Wind7.1 mph SE
Humidity57%
Visibility—
Dew point46°
Tue, 1770° / 54°0.04Light rain
MorningLight rain60°feels 60°
AfternoonLight rain68°feels 68°
EveningLight rain62°feels 62°
OvernightLight rain59°feels 59°
70 °Light rain

Alton, Tuesday, 17 November

Light rain. High 70°, low 54°.

Pressure29.94 inHg
Wind11.7 mph SE
Humidity65%
Visibility—
Dew point55°

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, IL 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.