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As of 06:09 CST

Weather in Alton, IL

48°Current weather

Alton, Wednesday, 11 November, 06:09

Clear. Feels like 46°. High 70°, low 46°.

Pressure29.91 inHg
Wind4.7 mph SW
Humidity95%
Visibility6.2 mi
Dew point46°

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.

70°
Best day: Wednesday, November 11
60° · 0.13 in
Worst day: Friday, November 20

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

Thu, 1253° / 38°0Overcast
MorningClear48°feels 44°
AfternoonOvercast47°feels 41°
EveningOvercast41°feels 33°
OvernightPartly cloudy47°feels 42°
53 °Overcast

Alton, Thursday, 12 November

Overcast. High 53°, low 38°.

Pressure30.00 inHg
Wind13 mph NW
Humidity54%
Visibility6.2 mi
Dew point32°
Fri, 1344° / 33°0Overcast
MorningOvercast38°feels 31°
AfternoonOvercast44°feels 38°
EveningClear36°feels 31°
OvernightClear36°feels 29°
44 °Overcast

Alton, Friday, 13 November

Overcast. High 44°, low 33°.

Pressure30.12 inHg
Wind12 mph N
Humidity62%
Visibility6.2 mi
Dew point25°
Sat, 1446° / 30°0Clear
MorningClear35°feels 32°
AfternoonPartly cloudy46°feels 46°
EveningOvercast38°feels 38°
OvernightClear31°feels 27°
46 °Clear

Alton, Saturday, 14 November

Clear. High 46°, low 30°.

Pressure30.27 inHg
Wind2.9 mph NW
Humidity57%
Visibility6.2 mi
Dew point25°
Sun, 1550° / 32°0Clear
MorningClear37°feels 34°
AfternoonClear47°feels 46°
EveningClear41°feels 39°
OvernightOvercast34°feels 34°
50 °Clear

Alton, Sunday, 15 November

Clear. High 50°, low 32°.

Pressure30.39 inHg
Wind4.3 mph SE
Humidity51%
Visibility—
Dew point29°
Mon, 1653° / 34°0Mostly clear
MorningMostly clear38°feels 38°
AfternoonMostly clear50°feels 47°
EveningMostly clear44°feels 41°
OvernightMostly clear40°feels 37°
53 °Mostly clear

Alton, Monday, 16 November

Mostly clear. High 53°, low 34°.

Pressure30.47 inHg
Wind5.6 mph E
Humidity49%
Visibility—
Dew point30°
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°.

Pressure30.39 inHg
Wind6.5 mph SE
Humidity40%
Visibility—
Dew point26°
Wed, 1857° / 37°0Mostly clear
MorningMostly clear42°feels 37°
AfternoonMostly clear53°feels 50°
EveningMostly clear47°feels 44°
OvernightMostly clear43°feels 38°
57 °Mostly clear

Alton, Wednesday, 18 November

Mostly clear. High 57°, low 37°.

Pressure30.27 inHg
Wind11.4 mph SE
Humidity37%
Visibility—
Dew point26°
Thu, 1959° / 44°0Overcast
MorningOvercast50°feels 46°
AfternoonOvercast58°feels 56°
EveningOvercast54°feels 52°
OvernightOvercast51°feels 48°
59 °Overcast

Alton, Thursday, 19 November

Overcast. High 59°, low 44°.

Pressure30.06 inHg
Wind13.4 mph S
Humidity46%
Visibility—
Dew point37°
Fri, 2060° / 53°0.13Light rain
MorningLight rain55°feels 53°
AfternoonLight rain58°feels 56°
EveningLight rain59°feels 57°
OvernightLight rain57°feels 55°
60 °Light rain

Alton, Friday, 20 November

Light rain. High 60°, low 53°.

Pressure29.91 inHg
Wind14 mph S
Humidity56%
Visibility—
Dew point41°

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.