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As of 00:31 CST

Weather in Alton, IL

51°Current weather

Alton, Tuesday, 10 November, 00:31

Clear. Feels like 50°. High 70°, low 46°.

Pressure30.09 inHg
Wind1 mph W
Humidity85%
Visibility6.2 mi
Dew point47°

Two-week outlook for Alton, IL: week one averages a high of 54.1° and week two 55.2°, so week two runs 1.1° warmer than week one. Around 2.1 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 10 – November 16)54.1°37.4°0.0 in / 0 d—
2nd (November 17 – November 23)55.2°44.4°2.1 in / 3 d—

Weekend weather

Sat, November 14
Mostly clear
46°30°
no precip.
Sun, November 15
Overcast
49°32°
no precip.
Sat, November 21
Rain
53°51°
0.51 in
Sun, November 22
Rain
52°49°
1.56 in
Wed, 1168° / 46°0Overcast
68 °Overcast

Alton, Wednesday, 11 November

Overcast. High 68°, low 46°.

Pressure29.80 inHg
Wind12.4 mph W
Humidity68%
Visibility6.2 mi
Dew point50°
Thu, 1251° / 38°0Light rain
51 °Light rain

Alton, Thursday, 12 November

Light rain. High 51°, low 38°.

Pressure30.00 inHg
Wind13 mph NW
Humidity53%
Visibility6.2 mi
Dew point34°
Fri, 1343° / 35°0Overcast
43 °Overcast

Alton, Friday, 13 November

Overcast. High 43°, low 35°.

Pressure30.12 inHg
Wind11.7 mph N
Humidity62%
Visibility6.2 mi
Dew point24°
Sat, 1446° / 30°0Mostly clear
46 °Mostly clear

Alton, Saturday, 14 November

Mostly clear. High 46°, low 30°.

Pressure30.27 inHg
Wind5 mph N
Humidity58%
Visibility—
Dew point29°
Sun, 1549° / 32°0Overcast
49 °Overcast

Alton, Sunday, 15 November

Overcast. High 49°, low 32°.

Pressure30.33 inHg
Wind6.5 mph E
Humidity49%
Visibility—
Dew point27°
Mon, 1653° / 34°0Partly cloudy
53 °Partly cloudy

Alton, Monday, 16 November

Partly cloudy. High 53°, low 34°.

Pressure30.39 inHg
Wind7.1 mph E
Humidity33%
Visibility—
Dew point20°
Tue, 1755° / 36°0Clear
55 °Clear

Alton, Tuesday, 17 November

Clear. High 55°, low 36°.

Pressure30.45 inHg
Wind7.4 mph SE
Humidity40%
Visibility—
Dew point27°
Wed, 1858° / 37°0Clear
58 °Clear

Alton, Wednesday, 18 November

Clear. High 58°, low 37°.

Pressure30.39 inHg
Wind10.2 mph S
Humidity37%
Visibility—
Dew point27°
Thu, 1962° / 44°0Overcast
62 °Overcast

Alton, Thursday, 19 November

Overcast. High 62°, low 44°.

Pressure30.30 inHg
Wind10.6 mph S
Humidity44%
Visibility—
Dew point35°
Fri, 2052° / 50°0.04Light rain
52 °Light rain

Alton, Friday, 20 November

Light rain. High 52°, low 50°.

Pressure30.39 inHg
Wind6.4 mph S
Humidity68%
Visibility—
Dew point40°
Sat, 2153° / 51°0.51Rain
53 °Rain

Alton, Saturday, 21 November

Rain. High 53°, low 51°.

Pressure30.30 inHg
Wind12.4 mph E
Humidity93%
Visibility—
Dew point51°
Sun, 2252° / 49°1.56Rain
52 °Rain

Alton, Sunday, 22 November

Rain. High 52°, low 49°.

Pressure30.03 inHg
Wind16.3 mph E
Humidity92%
Visibility—
Dew point47°
Mon, 2354° / 44°0Overcast
54 °Overcast

Alton, Monday, 23 November

Overcast. High 54°, low 44°.

Pressure29.88 inHg
Wind14.8 mph W
Humidity63%
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.