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As of 02:17 CST

Weather in Alton, IL

50°Current weather

Alton, Thursday, 5 November, 02:17

Clear. Feels like 46°. High 62°, low 48°.

Pressure29.83 inHg
Wind9.2 mph SW
Humidity93%
Visibility6.2 mi
Dew point47°

10-day forecast for Alton, IL: 36° to 67°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

67°
Best day: Saturday, November 14
54° · 0.04 in
Worst day: Friday, November 6

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

Fri, 0654° / 40°0.04Light rain
MorningOvercast51°feels 49°
AfternoonOvercast53°feels 50°
EveningMostly clear45°feels 42°
OvernightOvercast52°feels 51°
54 °Light rain

Alton, Friday, 6 November

Light rain. High 54°, low 40°.

Pressure30.18 inHg
Wind8.7 mph N
Humidity61%
Visibility6.2 mi
Dew point39°
Sat, 0752° / 36°0Overcast
MorningMostly clear40°feels 38°
AfternoonOvercast52°feels 50°
EveningClear44°feels 44°
OvernightClear38°feels 35°
52 °Overcast

Alton, Saturday, 7 November

Overcast. High 52°, low 36°.

Pressure30.30 inHg
Wind3.6 mph NW
Humidity49%
Visibility6.2 mi
Dew point32°
Sun, 0863° / 40°0Mostly clear
MorningClear45°feels 41°
AfternoonOvercast62°feels 60°
EveningClear51°feels 50°
OvernightClear40°feels 38°
63 °Mostly clear

Alton, Sunday, 8 November

Mostly clear. High 63°, low 40°.

Pressure30.18 inHg
Wind7 mph W
Humidity58%
Visibility6.2 mi
Dew point44°
Mon, 0966° / 44°0Clear
MorningClear50°feels 49°
AfternoonClear62°feels 61°
EveningClear55°feels 54°
OvernightClear46°feels 46°
66 °Clear

Alton, Monday, 9 November

Clear. High 66°, low 44°.

Pressure30.18 inHg
Wind5.4 mph SW
Humidity65%
Visibility—
Dew point49°
Tue, 1064° / 44°0Clear
MorningClear49°feels 47°
AfternoonClear60°feels 58°
EveningClear55°feels 52°
OvernightClear51°feels 48°
64 °Clear

Alton, Tuesday, 10 November

Clear. High 64°, low 44°.

Pressure30.09 inHg
Wind6.3 mph W
Humidity52%
Visibility—
Dew point41°
Wed, 1159° / 45°0Mostly clear
MorningMostly clear49°feels 45°
AfternoonMostly clear58°feels 55°
EveningMostly clear49°feels 46°
OvernightMostly clear45°feels 41°
59 °Mostly clear

Alton, Wednesday, 11 November

Mostly clear. High 59°, low 45°.

Pressure30.18 inHg
Wind8.2 mph N
Humidity29%
Visibility—
Dew point25°
Thu, 1253° / 37°0Clear
MorningClear41°feels 37°
AfternoonClear51°feels 47°
EveningClear44°feels 40°
OvernightClear40°feels 36°
53 °Clear

Alton, Thursday, 12 November

Clear. High 53°, low 37°.

Pressure30.21 inHg
Wind11 mph N
Humidity42%
Visibility—
Dew point27°
Fri, 1358° / 36°0Partly cloudy
MorningPartly cloudy42°feels 38°
AfternoonPartly cloudy54°feels 51°
EveningPartly cloudy50°feels 47°
OvernightPartly cloudy45°feels 42°
58 °Partly cloudy

Alton, Friday, 13 November

Partly cloudy. High 58°, low 36°.

Pressure30.12 inHg
Wind7.3 mph W
Humidity37%
Visibility—
Dew point27°
Sat, 1467° / 43°0Clear
MorningClear48°feels 45°
AfternoonClear62°feels 60°
EveningClear58°feels 56°
OvernightClear53°feels 51°
67 °Clear

Alton, Saturday, 14 November

Clear. High 67°, low 43°.

Pressure30.00 inHg
Wind10.4 mph SW
Humidity42%
Visibility—
Dew point37°

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.