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As of 10:00 CST

Weather in Alton, IL

58°Current weather

Alton, Wednesday, 4 November, 10:00

Overcast. Feels like 57°. High 62°, low 53°.

Pressure29.80 inHg
Wind10.4 mph W
Humidity87%
Visibility6.2 mi
Dew point53°

10-day forecast for Alton, IL: 36° to 64°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

64°
Best day: Monday, November 9
52°
Worst day: Saturday, November 7

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

Thu, 0562° / 48°0Clear
MorningClear51°feels 49°
AfternoonPartly cloudy62°feels 60°
EveningOvercast56°feels 55°
OvernightOvercast52°feels 51°
62 °Clear

Alton, Thursday, 5 November

Clear. High 62°, low 48°.

Pressure29.88 inHg
Wind10.8 mph W
Humidity52%
Visibility6.2 mi
Dew point42°
Fri, 0654° / 41°0Overcast
MorningOvercast51°feels 49°
AfternoonOvercast52°feels 50°
EveningMostly clear46°feels 42°
OvernightPartly cloudy51°feels 50°
54 °Overcast

Alton, Friday, 6 November

Overcast. High 54°, low 41°.

Pressure30.15 inHg
Wind9.7 mph N
Humidity60%
Visibility6.2 mi
Dew point40°
Sat, 0752° / 36°0Overcast
MorningClear40°feels 38°
AfternoonOvercast53°feels 50°
EveningPartly cloudy44°feels 44°
OvernightClear38°feels 35°
52 °Overcast

Alton, Saturday, 7 November

Overcast. High 52°, low 36°.

Pressure30.30 inHg
Wind3.8 mph N
Humidity49%
Visibility6.2 mi
Dew point33°
Sun, 0861° / 39°0Clear
MorningClear44°feels 41°
AfternoonClear56°feels 55°
EveningClear52°feels 50°
OvernightClear41°feels 39°
61 °Clear

Alton, Sunday, 8 November

Clear. High 61°, low 39°.

Pressure30.21 inHg
Wind7.3 mph SW
Humidity58%
Visibility—
Dew point40°
Mon, 0964° / 44°0Clear
MorningClear49°feels 49°
AfternoonClear61°feels 60°
EveningClear54°feels 53°
OvernightClear50°feels 49°
64 °Clear

Alton, Monday, 9 November

Clear. High 64°, low 44°.

Pressure30.21 inHg
Wind4.5 mph SW
Humidity65%
Visibility—
Dew point48°
Tue, 1064° / 43°0Clear
MorningClear49°feels 45°
AfternoonClear60°feels 58°
EveningClear53°feels 50°
OvernightClear48°feels 45°
64 °Clear

Alton, Tuesday, 10 November

Clear. High 64°, low 43°.

Pressure30.09 inHg
Wind8.5 mph N
Humidity36%
Visibility—
Dew point32°
Wed, 1159° / 41°0Overcast
MorningOvercast46°feels 43°
AfternoonOvercast56°feels 53°
EveningOvercast51°feels 48°
OvernightOvercast48°feels 45°
59 °Overcast

Alton, Wednesday, 11 November

Overcast. High 59°, low 41°.

Pressure30.21 inHg
Wind7.1 mph NE
Humidity37%
Visibility—
Dew point29°
Thu, 1257° / 45°0Overcast
MorningOvercast48°feels 46°
AfternoonOvercast55°feels 52°
EveningOvercast48°feels 46°
OvernightOvercast45°feels 43°
57 °Overcast

Alton, Thursday, 12 November

Overcast. High 57°, low 45°.

Pressure30.24 inHg
Wind6.6 mph NE
Humidity44%
Visibility—
Dew point33°
Fri, 1359° / 40°0Clear
MorningClear45°feels 41°
AfternoonClear55°feels 53°
EveningClear50°feels 47°
OvernightClear46°feels 44°
59 °Clear

Alton, Friday, 13 November

Clear. High 59°, low 40°.

Pressure30.21 inHg
Wind7.6 mph NW
Humidity42%
Visibility—
Dew point31°

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.