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As of 11:42 CDT

Weather in Alton, IL

74°Current weather

Alton, Thursday, 29 October, 11:42

Clear. Feels like 74°. High 77°, low 57°.

Pressure30.15 inHg
Wind9.2 mph S
Humidity58%
Visibility6.2 mi
Dew point58°

10-day forecast for Alton, IL: 36° to 77°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

76°
Best day: Friday, October 30
66° · 0.55 in
Worst day: Wednesday, November 4

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

Fri, 3076° / 60°0.02Light rain
MorningPartly cloudy61°feels 61°
AfternoonOvercast75°feels 75°
EveningOvercast68°feels 69°
OvernightMostly clear62°feels 63°
76 °Light rain

Alton, Friday, 30 October

Light rain. High 76°, low 60°.

Pressure30.24 inHg
Wind8.5 mph SE
Humidity72%
Visibility6.2 mi
Dew point60°
Sat, 3166° / 59°0Overcast
MorningOvercast60°feels 60°
AfternoonOvercast66°feels 65°
EveningOvercast61°feels 60°
OvernightOvercast60°feels 60°
66 °Overcast

Alton, Saturday, 31 October

Overcast. High 66°, low 59°.

Pressure30.27 inHg
Wind5.9 mph SE
Humidity66%
Visibility6.2 mi
Dew point54°
Sun, 0167° / 58°0.11Light rain
MorningLight rain58°feels 58°
AfternoonLight rain66°feels 66°
EveningOvercast64°feels 64°
OvernightOvercast59°feels 59°
67 °Light rain

Alton, Sunday, 1 November

Light rain. High 67°, low 58°.

Pressure30.27 inHg
Wind9.8 mph SE
Humidity76%
Visibility6.2 mi
Dew point58°
Mon, 0266° / 59°0Overcast
MorningOvercast60°feels 60°
AfternoonOvercast65°feels 65°
EveningOvercast65°feels 65°
OvernightOvercast61°feels 61°
66 °Overcast

Alton, Monday, 2 November

Overcast. High 66°, low 59°.

Pressure30.06 inHg
Wind14.1 mph S
Humidity80%
Visibility—
Dew point58°
Tue, 0374° / 63°0Overcast
MorningOvercast66°feels 66°
AfternoonOvercast72°feels 72°
EveningOvercast69°feels 69°
OvernightOvercast66°feels 66°
74 °Overcast

Alton, Tuesday, 3 November

Overcast. High 74°, low 63°.

Pressure29.88 inHg
Wind16.3 mph S
Humidity63%
Visibility—
Dew point58°
Wed, 0466° / 60°0.55Rain
MorningRain63°feels 63°
AfternoonRain62°feels 62°
EveningRain62°feels 62°
OvernightRain60°feels 61°
66 °Rain

Alton, Wednesday, 4 November

Rain. High 66°, low 60°.

Pressure29.74 inHg
Wind12.2 mph SE
Humidity89%
Visibility—
Dew point59°
Thu, 0560° / 53°0.06Light rain
MorningLight rain58°feels 58°
AfternoonLight rain59°feels 59°
EveningLight rain54°feels 53°
OvernightLight rain54°feels 53°
60 °Light rain

Alton, Thursday, 5 November

Light rain. High 60°, low 53°.

Pressure29.62 inHg
Wind11.9 mph W
Humidity79%
Visibility—
Dew point54°
Fri, 0652° / 45°0Overcast
MorningOvercast50°feels 44°
AfternoonOvercast49°feels 44°
EveningOvercast47°feels 43°
OvernightOvercast46°feels 43°
52 °Overcast

Alton, Friday, 6 November

Overcast. High 52°, low 45°.

Pressure29.85 inHg
Wind13.9 mph NW
Humidity82%
Visibility—
Dew point45°
Sat, 0753° / 36°0Clear
MorningClear40°feels 36°
AfternoonClear50°feels 47°
EveningClear45°feels 42°
OvernightClear41°feels 37°
53 °Clear

Alton, Saturday, 7 November

Clear. High 53°, low 36°.

Pressure30.24 inHg
Wind8 mph N
Humidity41%
Visibility—
Dew point26°

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.