Av. high : Average high in ºF - Av.low : Average low in ºF - Av. precip. : Average precipitation in inch - Days precip. : Days with precipitation - Hours sun. : Hours of sunshine
Hi : Average high in ºF - Lo : Average low in ºF - Pre. : Average precipitation in inch - DP : Days with precipitation - Sun : Hours of sunshine
Alton Climate Graph - Illinois Climate Chart
Daily normals Alton - Illinois - January
Day
High
ºF
Low
ºF
Prec/mo
inch
Prec/yr
inch
Snow/mo
inch
Snow/yr
inch
1 Jan
39.6
23.6
0.08
0.08
0.00
0.00
2 Jan
39.5
23.5
0.20
0.20
0.00
0.00
3 Jan
39.5
23.4
0.28
0.28
0.00
0.00
4 Jan
39.4
23.3
0.35
0.35
0.00
0.00
5 Jan
39.4
23.3
0.47
0.47
0.00
0.00
6 Jan
39.3
23.2
0.55
0.55
0.00
0.00
7 Jan
39.3
23.1
0.63
0.63
0.00
0.00
8 Jan
39.3
23.1
0.71
0.71
0.00
0.00
9 Jan
39.3
23.0
0.79
0.79
0.00
0.00
10 Jan
39.3
22.9
0.87
0.87
0.00
0.00
11 Jan
39.3
22.9
0.94
0.94
0.00
0.00
12 Jan
39.3
22.9
1.02
1.02
0.00
0.00
13 Jan
39.3
22.8
1.10
1.10
0.00
0.00
14 Jan
39.3
22.8
1.18
1.18
0.00
0.00
15 Jan
39.4
22.8
1.26
1.26
0.00
0.00
16 Jan
39.4
22.7
1.34
1.34
0.00
0.00
17 Jan
39.5
22.7
1.42
1.42
0.00
0.00
18 Jan
39.5
22.7
1.50
1.50
0.00
0.00
19 Jan
39.6
22.7
1.57
1.57
0.00
0.00
20 Jan
39.6
22.7
1.65
1.65
0.00
0.00
21 Jan
39.7
22.7
1.73
1.73
0.00
0.00
22 Jan
39.8
22.8
1.77
1.77
0.00
0.00
23 Jan
39.9
22.8
1.85
1.85
0.00
0.00
24 Jan
40.0
22.8
1.93
1.93
0.00
0.00
25 Jan
40.1
22.9
2.01
2.01
0.00
0.00
26 Jan
40.2
22.9
2.09
2.09
0.00
0.00
27 Jan
40.3
23.0
2.17
2.17
0.00
0.00
28 Jan
40.5
23.1
2.20
2.20
0.00
0.00
29 Jan
40.6
23.2
2.28
2.28
0.00
0.00
30 Jan
40.7
23.3
2.36
2.36
0.00
0.00
31 Jan
40.9
23.4
2.40
2.40
0.00
0.00
Weather history Alton - December 2019
Day
High
ºF
Low
ºF
Precip.
inch
Snow
inch
Snow d.
inch
01 Dec
52.0
39.9
0.63
-
-
02 Dec
39.9
33.1
0.00
-
-
03 Dec
37.0
28.9
0.00
-
-
04 Dec
46.0
28.0
0.00
-
-
05 Dec
51.1
28.0
0.00
0.00
0.0
06 Dec
59.0
34.0
0.00
-
-
07 Dec
59.0
28.9
0.00
-
-
09 Dec
59.0
-
0.07
-
-
10 Dec
52.0
21.9
0.00
-
-
11 Dec
52.0
21.0
0.00
-
-
12 Dec
43.0
21.9
0.00
-
-
13 Dec
50.0
-
0.00
-
-
14 Dec
50.0
-
0.00
-
-
15 Dec
50.0
21.9
0.04
-
-
16 Dec
-
-
-
4.02
3.0
17 Dec
27.0
25.0
0.23
-
-
18 Dec
30.9
21.9
0.00
-
3.0
19 Dec
30.9
21.9
0.00
-
-
20 Dec
42.1
23.0
0.00
-
-
21 Dec
45.0
30.9
0.00
-
-
22 Dec
51.1
30.9
0.00
-
-
23 Dec
51.1
30.0
0.00
0.00
-
24 Dec
57.0
30.9
0.00
0.00
0.0
25 Dec
57.0
32.0
0.00
0.00
0.0
26 Dec
64.9
42.1
0.00
-
-
27 Dec
66.0
37.9
0.00
0.00
0.0
Past weather Alton
Dec 19
Normal
Average high temperature Av. high temp.
48.9 ºF
43 ºF
Average low temperature Av. low temp.
28.8 ºF
27 ºF
Total precipitation Total precip.
0.97 inch
2.98 inch
Total snowfall Total snowfall
- inch
0 inch
Highest max temperature Highest max temp.
66.0 ºF
-
Lowest max temperature Lowest max temp.
27.0 ºF
-
Highest min temperature Highest min temp.
42.1 ºF
-
Lowest min temperature Lowest min temp.
21.0 ºF
-
Past weather December 2019 incomplete - Missing data
Geo Alton - Illinois
Country
United States
State
Illinois
County
Madison
City
Alton
Zip code
62002
Longitude
-90.18 dec. degr.
Latitude
38.89 dec. degr.
Altitude - Elevation
495ft
ICAO
-
IATA
-
Date and Time Alton - Illinois
Local Time
02:50 PM
Sunrise
07:12 AM
Sunset
05:13 PM
Day / Night
Day
Timezone
Chicago -6:00
Timezone DB
America/Chicago
Map of Alton - Illinois
Alton weather averages
Annual high temperature
66ºF
Annual low temperature
47ºF
Average annual precip.
41.3 inch
Share
Station Data
Monthly averages Alton Longitude: -90.1843, Latitude: 38.8906 Average weather Alton, IL - 62002
Monthly: 1981-2010 normals History: 2007-2019
Abbreviations
Average precipitation in : Av. precipitation in Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...