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As of 03:50 CST

Weather in Alton, IL

30°Current weather

Alton, Saturday, 14 November, 03:50

Clear. Feels like 30°. High 47°, low 29°.

Pressure30.24 inHg
Wind1 mph NE
Humidity87%
Visibility6.2 mi
Dew point27°

10-day forecast for Alton, IL: 27° to 70°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

70°
Best day: Saturday, November 21
47°
Worst day: Saturday, November 14

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

Sun, 1553° / 27°0Partly cloudy
MorningPartly cloudy39°feels 36°
AfternoonPartly cloudy52°feels 49°
EveningClear38°feels 36°
OvernightMostly clear27°feels 27°
53 °Partly cloudy

Alton, Sunday, 15 November

Partly cloudy. High 53°, low 27°.

Pressure30.47 inHg
Wind1.3 mph S
Humidity51%
Visibility6.2 mi
Dew point31°
Mon, 1653° / 34°0Clear
MorningClear38°feels 36°
AfternoonClear53°feels 50°
EveningClear41°feels 38°
OvernightClear35°feels 35°
53 °Clear

Alton, Monday, 16 November

Clear. High 53°, low 34°.

Pressure30.53 inHg
Wind3.1 mph S
Humidity48%
Visibility6.2 mi
Dew point33°
Tue, 1754° / 36°0Clear
MorningClear39°feels 36°
AfternoonClear53°feels 51°
EveningClear43°feels 40°
OvernightClear38°feels 34°
54 °Clear

Alton, Tuesday, 17 November

Clear. High 54°, low 36°.

Pressure30.50 inHg
Wind5.8 mph S
Humidity55%
Visibility6.2 mi
Dew point37°
Wed, 1858° / 39°0Overcast
MorningOvercast44°feels 40°
AfternoonOvercast55°feels 53°
EveningOvercast50°feels 48°
OvernightClear40°feels 36°
58 °Overcast

Alton, Wednesday, 18 November

Overcast. High 58°, low 39°.

Pressure30.33 inHg
Wind9.8 mph SE
Humidity55%
Visibility—
Dew point38°
Thu, 1961° / 46°0Light rain
MorningLight rain53°feels 50°
AfternoonLight rain60°feels 58°
EveningLight rain55°feels 54°
OvernightLight rain50°feels 48°
61 °Light rain

Alton, Thursday, 19 November

Light rain. High 61°, low 46°.

Pressure30.27 inHg
Wind8.8 mph S
Humidity66%
Visibility—
Dew point47°
Fri, 2066° / 45°0Partly cloudy
MorningPartly cloudy50°feels 49°
AfternoonPartly cloudy63°feels 60°
EveningPartly cloudy60°feels 58°
OvernightPartly cloudy54°feels 52°
66 °Partly cloudy

Alton, Friday, 20 November

Partly cloudy. High 66°, low 45°.

Pressure30.27 inHg
Wind8.6 mph SE
Humidity35%
Visibility—
Dew point33°
Sat, 2170° / 53°0.02Light rain
MorningLight rain57°feels 56°
AfternoonLight rain67°feels 65°
EveningLight rain61°feels 60°
OvernightLight rain58°feels 57°
70 °Light rain

Alton, Saturday, 21 November

Light rain. High 70°, low 53°.

Pressure30.03 inHg
Wind18.9 mph S
Humidity49%
Visibility—
Dew point46°
Sun, 2253° / 43°0Clear
MorningClear45°feels 39°
AfternoonClear50°feels 47°
EveningClear46°feels 42°
OvernightClear43°feels 37°
53 °Clear

Alton, Sunday, 22 November

Clear. High 53°, low 43°.

Pressure30.18 inHg
Wind15.7 mph W
Humidity42%
Visibility—
Dew point28°
Mon, 2351° / 37°0Mostly clear
MorningMostly clear40°feels 33°
AfternoonMostly clear48°feels 43°
EveningMostly clear41°feels 36°
OvernightMostly clear37°feels 31°
51 °Mostly clear

Alton, Monday, 23 November

Mostly clear. High 51°, low 37°.

Pressure30.21 inHg
Wind14.8 mph NW
Humidity24%
Visibility—
Dew point13°

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.