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As of 17:36 CDT

Weather in Alton, IL

73°Current weather

Alton, Saturday, 24 October, 17:36

Clear. Feels like 72°. High 75°, low 48°.

Pressure30.30 inHg
Wind5.7 mph SE
Humidity45%
Visibility6.2 mi
Dew point50°

10-day forecast for Alton, IL: 44° to 78°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

78°
Best day: Friday, October 30
53° · 0.1 in
Worst day: Monday, November 2

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

Sun, 2576° / 48°0Overcast
MorningOvercast51°feels 50°
AfternoonOvercast75°feels 75°
EveningOvercast60°feels 59°
OvernightOvercast53°feels 52°
76 °Overcast

Alton, Sunday, 25 October

Overcast. High 76°, low 48°.

Pressure30.42 inHg
Wind3.3 mph S
Humidity56%
Visibility6.2 mi
Dew point52°
Mon, 2672° / 52°0Overcast
MorningOvercast56°feels 55°
AfternoonOvercast72°feels 71°
EveningClear61°feels 60°
OvernightOvercast55°feels 54°
72 °Overcast

Alton, Monday, 26 October

Overcast. High 72°, low 52°.

Pressure30.33 inHg
Wind3.6 mph SW
Humidity56%
Visibility6.2 mi
Dew point53°
Tue, 2771° / 54°0Overcast
MorningOvercast55°feels 54°
AfternoonOvercast71°feels 70°
EveningOvercast61°feels 60°
OvernightOvercast56°feels 55°
71 °Overcast

Alton, Tuesday, 27 October

Overcast. High 71°, low 54°.

Pressure30.24 inHg
Wind7.2 mph S
Humidity58%
Visibility6.2 mi
Dew point52°
Wed, 2875° / 54°0Clear
MorningClear57°feels 56°
AfternoonClear74°feels 73°
EveningClear65°feels 65°
OvernightPartly cloudy57°feels 56°
75 °Clear

Alton, Wednesday, 28 October

Clear. High 75°, low 54°.

Pressure30.18 inHg
Wind6.8 mph S
Humidity58%
Visibility6.2 mi
Dew point54°
Thu, 2977° / 56°0Overcast
MorningOvercast62°feels 61°
AfternoonOvercast74°feels 73°
EveningOvercast66°feels 66°
OvernightOvercast62°feels 62°
77 °Overcast

Alton, Thursday, 29 October

Overcast. High 77°, low 56°.

Pressure30.18 inHg
Wind6.4 mph S
Humidity52%
Visibility—
Dew point54°
Fri, 3078° / 58°0Overcast
MorningOvercast63°feels 62°
AfternoonOvercast75°feels 74°
EveningOvercast70°feels 69°
OvernightOvercast67°feels 65°
78 °Overcast

Alton, Friday, 30 October

Overcast. High 78°, low 58°.

Pressure30.15 inHg
Wind9.5 mph S
Humidity35%
Visibility—
Dew point44°
Sat, 3172° / 65°0.04Light rain
MorningLight rain67°feels 66°
AfternoonLight rain70°feels 69°
EveningLight rain68°feels 67°
OvernightLight rain65°feels 64°
72 °Light rain

Alton, Saturday, 31 October

Light rain. High 72°, low 65°.

Pressure30.00 inHg
Wind16.3 mph S
Humidity38%
Visibility—
Dew point43°
Sun, 0178° / 60°0.03Light rain
MorningLight rain67°feels 66°
AfternoonLight rain74°feels 73°
EveningLight rain66°feels 66°
OvernightLight rain61°feels 60°
78 °Light rain

Alton, Sunday, 1 November

Light rain. High 78°, low 60°.

Pressure29.74 inHg
Wind17.7 mph NW
Humidity57%
Visibility—
Dew point57°
Mon, 0253° / 44°0.1Light rain
MorningLight rain46°feels 38°
AfternoonLight rain47°feels 40°
EveningLight rain49°feels 42°
OvernightLight rain49°feels 42°
53 °Light rain

Alton, Monday, 2 November

Light rain. High 53°, low 44°.

Pressure29.71 inHg
Wind22.7 mph W
Humidity63%
Visibility—
Dew point35°

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.