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As of 12:42 CST

Weather in Alton, IL

68°Current weather

Alton, Tuesday, 10 November, 12:42

Clear. Feels like 67°. High 68°, low 45°.

Pressure30.06 inHg
Wind2 mph E
Humidity61%
Visibility6.2 mi
Dew point54°

10-day forecast for Alton, IL: 29° to 68°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

68°
Best day: Tuesday, November 10
44°
Worst day: Friday, November 13

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

Wed, 1168° / 45°0Overcast
MorningOvercast57°feels 57°
AfternoonPartly cloudy66°feels 65°
EveningClear50°feels 48°
OvernightClear47°feels 46°
68 °Overcast

Alton, Wednesday, 11 November

Overcast. High 68°, low 45°.

Pressure29.80 inHg
Wind13.7 mph W
Humidity65%
Visibility6.2 mi
Dew point50°
Thu, 1250° / 40°0Overcast
MorningClear45°feels 40°
AfternoonOvercast50°feels 44°
EveningOvercast42°feels 36°
OvernightPartly cloudy46°feels 42°
50 °Overcast

Alton, Thursday, 12 November

Overcast. High 50°, low 40°.

Pressure29.97 inHg
Wind13.8 mph NW
Humidity52%
Visibility6.2 mi
Dew point32°
Fri, 1344° / 34°0Overcast
MorningOvercast39°feels 31°
AfternoonOvercast44°feels 39°
EveningClear36°feels 32°
OvernightClear36°feels 30°
44 °Overcast

Alton, Friday, 13 November

Overcast. High 44°, low 34°.

Pressure30.12 inHg
Wind11.3 mph N
Humidity57%
Visibility6.2 mi
Dew point22°
Sat, 1446° / 29°0Mostly clear
MorningClear35°feels 35°
AfternoonMostly clear44°feels 44°
EveningMostly clear39°feels 38°
OvernightClear31°feels 28°
46 °Mostly clear

Alton, Saturday, 14 November

Mostly clear. High 46°, low 29°.

Pressure30.24 inHg
Wind0.4 mph S
Humidity56%
Visibility6.2 mi
Dew point27°
Sun, 1549° / 33°0Overcast
MorningOvercast40°feels 36°
AfternoonOvercast47°feels 44°
EveningOvercast42°feels 38°
OvernightOvercast39°feels 35°
49 °Overcast

Alton, Sunday, 15 November

Overcast. High 49°, low 33°.

Pressure30.36 inHg
Wind7.4 mph SE
Humidity52%
Visibility—
Dew point30°
Mon, 1652° / 35°0Overcast
MorningOvercast39°feels 35°
AfternoonOvercast49°feels 46°
EveningOvercast44°feels 41°
OvernightOvercast40°feels 36°
52 °Overcast

Alton, Monday, 16 November

Overcast. High 52°, low 35°.

Pressure30.50 inHg
Wind7.6 mph E
Humidity41%
Visibility—
Dew point25°
Tue, 1754° / 36°0Clear
MorningClear40°feels 37°
AfternoonClear51°feels 47°
EveningClear45°feels 42°
OvernightClear41°feels 37°
54 °Clear

Alton, Tuesday, 17 November

Clear. High 54°, low 36°.

Pressure30.45 inHg
Wind6.4 mph SE
Humidity40%
Visibility—
Dew point26°
Wed, 1856° / 36°0Clear
MorningClear41°feels 37°
AfternoonClear52°feels 49°
EveningClear47°feels 43°
OvernightClear43°feels 39°
56 °Clear

Alton, Wednesday, 18 November

Clear. High 56°, low 36°.

Pressure30.36 inHg
Wind9.4 mph SE
Humidity39%
Visibility—
Dew point27°
Thu, 1960° / 41°0Overcast
MorningOvercast45°feels 41°
AfternoonOvercast56°feels 53°
EveningOvercast52°feels 50°
OvernightOvercast48°feels 45°
60 °Overcast

Alton, Thursday, 19 November

Overcast. High 60°, low 41°.

Pressure30.30 inHg
Wind10.5 mph SE
Humidity38%
Visibility—
Dew point29°

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.