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Past Weather in Alton, Illinois, USA — Yesterday and Last 2 Weeks

Currently: 53 °F. Passing clouds. (Weather station: Lambert-St. Louis International Airport, USA). See more current weather

Past Weather in Alton — Graph

°F
Time
Wind
(mph)
Temp
(°F)
50
54
58
62
66
70
74
78
82
86
Thu, May 8
Lo:61
12 am
Hi:61
4
Lo:59
6 am
Hi:61
6
Lo:64
12 pm
Hi:72
7
Lo:61
6 pm
Hi:70
7
Fri, May 9
Lo:52
12 am
Hi:61
7
Lo:52
6 am
Hi:66
9
Lo:68
12 pm
Hi:72
10
Lo:55
6 pm
Hi:70
2
Sat, May 10
Lo:52
12 am
Hi:54
2
Lo:52
6 am
Hi:72
3
Lo:73
12 pm
Hi:77
4
Lo:61
6 pm
Hi:73
2
Sun, May 11
Lo:57
12 am
Hi:61
7
Lo:57
6 am
Hi:75
6
Lo:75
12 pm
Hi:81
11
Lo:70
6 pm
Hi:79
7
Mon, May 12
Lo:64
12 am
Hi:70
4
Lo:64
6 am
Hi:70
5
Lo:68
12 pm
Hi:72
7
Lo:64
6 pm
Hi:70
7
Tue, May 13
Lo:63
12 am
Hi:66
2
Lo:64
6 am
Hi:73
2
Lo:75
12 pm
Hi:81
4
Lo:70
6 pm
Hi:79
7
Wed, May 14
Lo:63
12 am
Hi:70
5
Lo:64
6 am
Hi:81
10
Lo:82
12 pm
Hi:84
17
Lo:75
6 pm
Hi:82
11
Thu, May 15
Lo:73
12 am
Hi:75
9
Lo:73
6 am
Hi:88
11
Lo:84
12 pm
Hi:88
15
Lo:70
6 pm
Hi:84
13
Fri, May 16
Lo:63
12 am
Hi:70
4
Lo:66
6 am
Hi:82
9
Lo:64
12 pm
Hi:84
16
Lo:72
6 pm
Hi:81
14
Sat, May 17
Lo:63
12 am
Hi:70
14
Lo:61
6 am
Hi:70
17
Lo:72
12 pm
Hi:75
16
Lo:63
6 pm
Hi:73
7
Sun, May 18
Lo:61
12 am
Hi:63
3
Lo:61
6 am
Hi:72
6
Lo:73
12 pm
Hi:79
7
Lo:70
6 pm
Hi:75
9
Mon, May 19
Lo:68
12 am
Hi:70
7
Lo:70
6 am
Hi:79
12
Lo:81
12 pm
Hi:82
17
Lo:72
6 pm
Hi:82
13
Tue, May 20
Lo:66
12 am
Hi:72
11
Lo:66
6 am
Hi:79
11
Lo:79
12 pm
Hi:82
18
Lo:64
6 pm
Hi:79
14
Wed, May 21
Lo:57
12 am
Hi:64
12
Lo:59
6 am
Hi:68
19
Lo:70
12 pm
Hi:73
18
Lo:61
6 pm
Hi:72
10
Thu, May 22
Lo:52
12 am
Hi:61
7
Lo:55
6 am
Hi:64
13
Lo:66
12 pm
Hi:72
17
Lo:55
6 pm
Hi:64
7
Fri, May 23
Lo:52
12 am
Hi:54
1

Alton Temperature Yesterday

Maximum temperature yesterday: 71 °F (at 2:51 pm)
Minimum temperature yesterday: 52 °F (at 4:51 am)
Average temperature yesterday: 61 °F

High & Low Weather Summary for the Past Weeks

 TemperatureHumidityPressure
High88 °F (May 15, 12:51 pm)94% (May 13, 12:51 am)30.21 "Hg (May 13, 12:51 am)
Low51 °F (May 9, 5:51 am)24% (May 10, 2:51 pm)29.49 "Hg (May 16, 1:51 pm)
Average69 °F62%29.85 "Hg
* Reported May 8 5:23 am — May 23 5:51 am, Alton. Weather by CustomWeather, © 2025

Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records

Alton Weather History for the Previous 24 Hours

Scroll right to see more
 ConditionsComfort  
Time TempWeatherWind HumidityBarometerVisibility
5:51 am
Fri, May 23
51 °FPassing clouds.3 mph83%30.12 "Hg10 mi
4:51 am51 °FPassing clouds.No wind83%30.11 "Hg10 mi
3:51 am52 °FClear.No wind77%30.09 "Hg10 mi
2:51 am51 °FClear.No wind80%30.09 "Hg10 mi
1:51 am53 °FClear.No wind72%30.09 "Hg10 mi
12:51 am54 °FClear.3 mph72%30.10 "Hg10 mi
11:51 pm
Thu, May 22
56 °FPassing clouds.3 mph65%30.11 "Hg10 mi
10:51 pm57 °FClear.6 mph62%30.11 "Hg10 mi
9:51 pm57 °FPassing clouds.6 mph62%30.10 "Hg10 mi
8:51 pm59 °FPassing clouds.6 mph60%30.09 "Hg10 mi
7:51 pm62 °FScattered clouds.9 mph52%30.07 "Hg10 mi
6:51 pm64 °FBroken clouds.10 mph47%30.06 "Hg10 mi
5:51 pm66 °FPartly sunny.15 mph43%30.05 "Hg10 mi
4:51 pm70 °FBroken clouds.13 mph41%30.03 "Hg10 mi
3:51 pm71 °FPartly sunny.17 mph38%30.02 "Hg10 mi
2:51 pm71 °FPassing clouds.22 mph38%30.02 "Hg10 mi
1:51 pm68 °FPassing clouds.17 mph42%30.02 "Hg10 mi
12:51 pm68 °FPassing clouds.16 mph40%30.04 "Hg10 mi
11:51 am65 °FPassing clouds.15 mph45%30.06 "Hg10 mi
10:51 am64 °FPassing clouds.12 mph45%30.07 "Hg10 mi
9:51 am61 °FPassing clouds.15 mph50%30.07 "Hg10 mi
8:51 am58 °FPassing clouds.13 mph56%30.07 "Hg10 mi
7:51 am56 °FPassing clouds.13 mph60%30.06 "Hg10 mi
Weather by CustomWeather, © 2025

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