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As of 23:21 CST

Weather in Alton, IL

45°Current weather

Alton, Sunday, 8 November, 23:21

Clear. Feels like 45°. High 66°, low 35°.

Pressure30.09 inHg
Wind0 mph N
Humidity93%
Visibility6.2 mi
Dew point47°

Two-week outlook for Alton, IL: week one averages a high of 58.2° and week two 59.7°, so week two runs 1.5° warmer than week one. Around 0.4 inches of precipitation are expected over the 14 days, across 2 wet days. The nearest weekend, November 8: 66°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (November 8 – November 14)58.2°38.8°0.0 in / 0 d—
2nd (November 15 – November 21)59.7°45.6°0.3 in / 2 d—

Weekend weather

Sun, November 8
Clear
66°35°
no precip.
Sat, November 14
Clear
50°32°
no precip.
Sun, November 15
Clear
58°38°
no precip.
Sat, November 21
Rain
55°46°
0.27 in
Mon, 0968° / 39°0Clear
68 °Clear

Alton, Monday, 9 November

Clear. High 68°, low 39°.

Pressure30.15 inHg
Wind3.8 mph SW
Humidity54%
Visibility6.2 mi
Dew point46°
Tue, 1066° / 44°0Clear
66 °Clear

Alton, Tuesday, 10 November

Clear. High 66°, low 44°.

Pressure30.09 inHg
Wind3.6 mph W
Humidity61%
Visibility6.2 mi
Dew point50°
Wed, 1165° / 47°0.02Light rain
65 °Light rain

Alton, Wednesday, 11 November

Light rain. High 65°, low 47°.

Pressure29.83 inHg
Wind11.2 mph W
Humidity68%
Visibility6.2 mi
Dew point54°
Thu, 1252° / 41°0Overcast
52 °Overcast

Alton, Thursday, 12 November

Overcast. High 52°, low 41°.

Pressure29.94 inHg
Wind12.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point34°
Fri, 1341° / 35°0Overcast
41 °Overcast

Alton, Friday, 13 November

Overcast. High 41°, low 35°.

Pressure30.12 inHg
Wind12.3 mph N
Humidity64%
Visibility—
Dew point29°
Sat, 1450° / 32°0Clear
50 °Clear

Alton, Saturday, 14 November

Clear. High 50°, low 32°.

Pressure30.24 inHg
Wind6.4 mph NW
Humidity52%
Visibility—
Dew point27°
Sun, 1558° / 38°0Clear
58 °Clear

Alton, Sunday, 15 November

Clear. High 58°, low 38°.

Pressure30.06 inHg
Wind6.6 mph E
Humidity32%
Visibility—
Dew point24°
Mon, 1661° / 42°0Overcast
61 °Overcast

Alton, Monday, 16 November

Overcast. High 61°, low 42°.

Pressure30.15 inHg
Wind9.7 mph SE
Humidity41%
Visibility—
Dew point33°
Tue, 1768° / 52°0Overcast
68 °Overcast

Alton, Tuesday, 17 November

Overcast. High 68°, low 52°.

Pressure30.24 inHg
Wind11.4 mph SE
Humidity49%
Visibility—
Dew point44°
Wed, 1859° / 53°0.07Light rain
59 °Light rain

Alton, Wednesday, 18 November

Light rain. High 59°, low 53°.

Pressure30.18 inHg
Wind8.2 mph SE
Humidity77%
Visibility—
Dew point51°
Thu, 1961° / 46°0Partly cloudy
61 °Partly cloudy

Alton, Thursday, 19 November

Partly cloudy. High 61°, low 46°.

Pressure30.24 inHg
Wind7.2 mph NW
Humidity24%
Visibility—
Dew point21°
Fri, 2055° / 44°0Overcast
55 °Overcast

Alton, Friday, 20 November

Overcast. High 55°, low 44°.

Pressure30.24 inHg
Wind8.4 mph SE
Humidity36%
Visibility—
Dew point26°
Sat, 2155° / 46°0.27Rain
55 °Rain

Alton, Saturday, 21 November

Rain. High 55°, low 46°.

Pressure30.27 inHg
Wind12.5 mph NE
Humidity64%
Visibility—
Dew point41°

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.