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As of 04:36 CST

Weather in Alton, IL

50°Current weather

Alton, Wednesday, 11 November, 04:36

Partly cloudy. Feels like 50°. High 70°, low 46°.

Pressure29.94 inHg
Wind4.5 mph SW
Humidity92%
Visibility6.2 mi
Dew point48°

Two-week outlook for Alton, IL: week one averages a high of 52.7° and week two 48.5°, so week two runs 4.3° cooler than week one. Around 0.5 inches of precipitation are expected over the 14 days, across 3 wet days. The nearest weekend, November 14: 46°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (November 11 – November 17)52.7°35.5°0.0 in / 0 d—
2nd (November 18 – November 24)48.5°34.9°0.5 in / 3 d—

Weekend weather

Sat, November 14
Clear
46°30°
no precip.
Sun, November 15
Clear
50°32°
no precip.
Sat, November 21
Rain
56°43°
0.22 in
Sun, November 22
Snow
40°29°
0.12 in
Thu, 1253° / 38°0Overcast
53 °Overcast

Alton, Thursday, 12 November

Overcast. High 53°, low 38°.

Pressure30.00 inHg
Wind13 mph NW
Humidity54%
Visibility6.2 mi
Dew point32°
Fri, 1344° / 33°0Overcast
44 °Overcast

Alton, Friday, 13 November

Overcast. High 44°, low 33°.

Pressure30.12 inHg
Wind12 mph N
Humidity62%
Visibility6.2 mi
Dew point25°
Sat, 1446° / 30°0Clear
46 °Clear

Alton, Saturday, 14 November

Clear. High 46°, low 30°.

Pressure30.27 inHg
Wind2.9 mph NW
Humidity57%
Visibility6.2 mi
Dew point25°
Sun, 1550° / 32°0Clear
50 °Clear

Alton, Sunday, 15 November

Clear. High 50°, low 32°.

Pressure30.39 inHg
Wind4.3 mph SE
Humidity51%
Visibility—
Dew point29°
Mon, 1653° / 34°0Mostly clear
53 °Mostly clear

Alton, Monday, 16 November

Mostly clear. High 53°, low 34°.

Pressure30.47 inHg
Wind5.6 mph E
Humidity49%
Visibility—
Dew point30°
Tue, 1754° / 36°0Clear
54 °Clear

Alton, Tuesday, 17 November

Clear. High 54°, low 36°.

Pressure30.39 inHg
Wind6.5 mph SE
Humidity40%
Visibility—
Dew point26°
Wed, 1857° / 37°0Mostly clear
57 °Mostly clear

Alton, Wednesday, 18 November

Mostly clear. High 57°, low 37°.

Pressure30.27 inHg
Wind11.4 mph SE
Humidity37%
Visibility—
Dew point26°
Thu, 1959° / 44°0Overcast
59 °Overcast

Alton, Thursday, 19 November

Overcast. High 59°, low 44°.

Pressure30.06 inHg
Wind13.4 mph S
Humidity46%
Visibility—
Dew point37°
Fri, 2060° / 53°0.13Light rain
60 °Light rain

Alton, Friday, 20 November

Light rain. High 60°, low 53°.

Pressure29.91 inHg
Wind14 mph S
Humidity56%
Visibility—
Dew point41°
Sat, 2156° / 43°0.22Rain
56 °Rain

Alton, Saturday, 21 November

Rain. High 56°, low 43°.

Pressure29.68 inHg
Wind15.3 mph S
Humidity71%
Visibility—
Dew point43°
Sun, 2240° / 29°0.12Snow
40 °Snow

Alton, Sunday, 22 November

Snow. High 40°, low 29°.

Pressure30.12 inHg
Wind17.1 mph NW
Humidity62%
Visibility—
Dew point25°
Mon, 2330° / 21°0Overcast
30 °Overcast

Alton, Monday, 23 November

Overcast. High 30°, low 21°.

Pressure30.30 inHg
Wind20.6 mph NW
Humidity52%
Visibility—
Dew point9°
Tue, 2437° / 18°0Clear
37 °Clear

Alton, Tuesday, 24 November

Clear. High 37°, low 18°.

Pressure30.42 inHg
Wind9.9 mph S
Humidity21%
Visibility—
Dew point-4°

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.