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As of 12:12 CDT

Weather in Alton, IL

70°Current weather

Alton, Friday, 30 October, 12:12

Clear. Feels like 70°. High 74°, low 57°.

Pressure30.24 inHg
Wind11.5 mph E
Humidity73%
Visibility6.2 mi
Dew point61°

Two-week outlook for Alton, IL: week one averages a high of 69° and week two 54.2°, so week two runs 14.8° cooler than week one. Around 1.6 inches of precipitation are expected over the 14 days, across 4 wet days. The nearest weekend, October 31: 71°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 30 – November 5)69°58.9°0.9 in / 2 d—
2nd (November 6 – November 12)54.2°44.2°0.7 in / 2 d—

Weekend weather

Sat, October 31
Overcast
71°62°
no precip.
Sun, November 1
Light rain
70°59°
0.02 in
Sat, November 7
Mostly clear
60°46°
no precip.
Sun, November 8
Overcast
57°44°
no precip.
Sat, 3171° / 62°0Overcast
71 °Overcast

Alton, Saturday, 31 October

Overcast. High 71°, low 62°.

Pressure30.30 inHg
Wind5.1 mph SE
Humidity56%
Visibility6.2 mi
Dew point49°
Sun, 0170° / 59°0.02Light rain
70 °Light rain

Alton, Sunday, 1 November

Light rain. High 70°, low 59°.

Pressure30.30 inHg
Wind8.9 mph SE
Humidity68%
Visibility6.2 mi
Dew point55°
Mon, 0270° / 58°0Overcast
70 °Overcast

Alton, Monday, 2 November

Overcast. High 70°, low 58°.

Pressure30.09 inHg
Wind11.7 mph SE
Humidity71%
Visibility6.2 mi
Dew point56°
Tue, 0370° / 65°0.13Light rain
70 °Light rain

Alton, Tuesday, 3 November

Light rain. High 70°, low 65°.

Pressure29.88 inHg
Wind15 mph S
Humidity77%
Visibility6.2 mi
Dew point62°
Wed, 0464° / 58°0.73Rain
64 °Rain

Alton, Wednesday, 4 November

Rain. High 64°, low 58°.

Pressure29.71 inHg
Wind10.3 mph NW
Humidity80%
Visibility—
Dew point56°
Thu, 0564° / 55°0Overcast
64 °Overcast

Alton, Thursday, 5 November

Overcast. High 64°, low 55°.

Pressure29.71 inHg
Wind11.8 mph NW
Humidity75%
Visibility—
Dew point54°
Fri, 0661° / 49°0Overcast
61 °Overcast

Alton, Friday, 6 November

Overcast. High 61°, low 49°.

Pressure29.91 inHg
Wind10.2 mph N
Humidity55%
Visibility—
Dew point43°
Sat, 0760° / 46°0Mostly clear
60 °Mostly clear

Alton, Saturday, 7 November

Mostly clear. High 60°, low 46°.

Pressure30.09 inHg
Wind7.9 mph N
Humidity49%
Visibility—
Dew point38°
Sun, 0857° / 44°0Overcast
57 °Overcast

Alton, Sunday, 8 November

Overcast. High 57°, low 44°.

Pressure30.21 inHg
Wind11.8 mph E
Humidity41%
Visibility—
Dew point30°
Mon, 0948° / 45°0.05Light rain
48 °Light rain

Alton, Monday, 9 November

Light rain. High 48°, low 45°.

Pressure30.03 inHg
Wind14.3 mph E
Humidity74%
Visibility—
Dew point38°
Tue, 1047° / 43°0.69Rain
47 °Rain

Alton, Tuesday, 10 November

Rain. High 47°, low 43°.

Pressure29.88 inHg
Wind13.3 mph NW
Humidity82%
Visibility—
Dew point40°
Wed, 1153° / 44°0Overcast
53 °Overcast

Alton, Wednesday, 11 November

Overcast. High 53°, low 44°.

Pressure30.00 inHg
Wind10.2 mph N
Humidity54%
Visibility—
Dew point35°
Thu, 1254° / 39°0Overcast
54 °Overcast

Alton, Thursday, 12 November

Overcast. High 54°, low 39°.

Pressure29.88 inHg
Wind11.3 mph SE
Humidity43%
Visibility—
Dew point29°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Alton, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.