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As of 08:26 CDT

Weather in Alton, IL

56°Current weather

Alton, Monday, 26 October, 08:26

Overcast. Feels like 56°. High 77°, low 53°.

Pressure30.33 inHg
Wind3.1 mph SW
Humidity91%
Visibility6.2 mi
Dew point53°

Two-week outlook for Alton, IL: week one averages a high of 73.1° and week two 66.1°, so week two runs 6.9° cooler than week one. Around 0.4 inches of precipitation are expected over the 14 days, across 4 wet days. The nearest weekend, October 31: 70°, with precipitation.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 26 – November 1)73.1°56°0.2 in / 3 d—
2nd (November 2 – November 8)66.1°49.9°0.2 in / 1 d—

Weekend weather

Sat, October 31
Light rain
70°59°
0.04 in
Sun, November 1
Light rain
65°61°
0.16 in
Sat, November 7
Clear
55°42°
no precip.
Sun, November 8
Mostly clear
60°40°
no precip.
Tue, 2774° / 51°0Overcast
74 °Overcast

Alton, Tuesday, 27 October

Overcast. High 74°, low 51°.

Pressure30.24 inHg
Wind5.7 mph S
Humidity60%
Visibility6.2 mi
Dew point52°
Wed, 2873° / 54°0Clear
73 °Clear

Alton, Wednesday, 28 October

Clear. High 73°, low 54°.

Pressure30.21 inHg
Wind6.2 mph S
Humidity56%
Visibility6.2 mi
Dew point53°
Thu, 2977° / 56°0.04Light rain
77 °Light rain

Alton, Thursday, 29 October

Light rain. High 77°, low 56°.

Pressure30.15 inHg
Wind5.8 mph SW
Humidity57%
Visibility6.2 mi
Dew point57°
Fri, 3075° / 58°0.01Light rain
75 °Light rain

Alton, Friday, 30 October

Light rain. High 75°, low 58°.

Pressure30.18 inHg
Wind7.7 mph E
Humidity66%
Visibility—
Dew point58°
Sat, 3170° / 59°0.04Light rain
70 °Light rain

Alton, Saturday, 31 October

Light rain. High 70°, low 59°.

Pressure30.15 inHg
Wind4.7 mph SE
Humidity63%
Visibility—
Dew point55°
Sun, 0165° / 61°0.16Light rain
65 °Light rain

Alton, Sunday, 1 November

Light rain. High 65°, low 61°.

Pressure30.00 inHg
Wind7 mph N
Humidity83%
Visibility—
Dew point60°
Mon, 0272° / 60°0.02Light rain
72 °Light rain

Alton, Monday, 2 November

Light rain. High 72°, low 60°.

Pressure29.88 inHg
Wind13.4 mph S
Humidity66%
Visibility—
Dew point55°
Tue, 0365° / 53°0.16Light rain
65 °Light rain

Alton, Tuesday, 3 November

Light rain. High 65°, low 53°.

Pressure29.83 inHg
Wind20.1 mph W
Humidity39%
Visibility—
Dew point35°
Wed, 0463° / 45°0Overcast
63 °Overcast

Alton, Wednesday, 4 November

Overcast. High 63°, low 45°.

Pressure29.97 inHg
Wind15.7 mph W
Humidity25%
Visibility—
Dew point22°
Thu, 0574° / 55°0.01Light rain
74 °Light rain

Alton, Thursday, 5 November

Light rain. High 74°, low 55°.

Pressure29.80 inHg
Wind10.1 mph SW
Humidity38%
Visibility—
Dew point43°
Fri, 0672° / 55°0.02Light rain
72 °Light rain

Alton, Friday, 6 November

Light rain. High 72°, low 55°.

Pressure29.68 inHg
Wind18.1 mph NW
Humidity46%
Visibility—
Dew point46°
Sat, 0755° / 42°0Clear
55 °Clear

Alton, Saturday, 7 November

Clear. High 55°, low 42°.

Pressure29.88 inHg
Wind13.9 mph NW
Humidity37%
Visibility—
Dew point26°
Sun, 0860° / 40°0Mostly clear
60 °Mostly clear

Alton, Sunday, 8 November

Mostly clear. High 60°, low 40°.

Pressure30.09 inHg
Wind6.8 mph SE
Humidity45%
Visibility—
Dew point34°

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.