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North Alton, IL

65°F
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North Alton

Illinois

65°
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North Alton, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Monthly

Air Quality Health & Activities

May

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
26
Sun through high clouds
59°
44°
27
Plenty of sun
60°
45°
28
Times of clouds and sun
63°
46°
29
Times of clouds and sun
67°
46°
30
Mostly cloudy
71°
50°
1
Sunny
67°
45°
2
Sunny
65°
47°
3
Plenty of sunshine
67°
50°
4
Partly sunny
71°
47°
5
Cloudy with a little rain
67°
54°
6
Cloudy with afternoon rain
71°
58°
7
Cloudy with a shower in spots
75°
57°
8
Rain
69°
55°
9
Cloudy, a couple of showers
66°
53°
10
Mostly sunny
68°
49°
11
Cloudy, a shower and t-storm
66°
48°
12
Brilliant sunshine
66°
48°
13
Mostly sunny
67°
50°
14
Cloudy with a little rain
68°
54°
15
Sunshine
69°
51°
16
Times of clouds and sun
70°
58°
17
Rain in the afternoon
75°
54°
18
Mostly sunny and less humid
70°
51°
19
Mostly sunny
69°
51°
20
Mostly sunny
70°
52°
21
A thunderstorm in the area
73°
62°
22
A thunderstorm in spots
78°
63°
23
A shower and t-storm; humid
79°
61°
24
Showers around in the p.m.
72°
60°
25
Humid with plenty of sunshine
79°
64°
26
Mostly sunny and humid
81°
64°
27
Mostly cloudy and less humid
81°
59°
28
Sunshine
73°
56°
29
Mostly sunny and warmer
84°
62°
30
A couple of thunderstorms
84°
62°
31
Humid with showers around
83°
58°
1
Mostly sunny
82°
57°
2
Plenty of sunshine
83°
58°
3
Plenty of sunshine
81°
59°
4
An afternoon t-storm or two
77°
63°
5
A morning thunderstorm or two
79°
62°
6
Humid with showers around
81°
65°

Temperature Graph

°F
90° 80° 70° 60° 50° May
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

May Weather in North Alton

North Alton's May 2026 forecast shows daily high temperatures ranging from 59° to 84°, with overnight lows between 44° and 65°. The average high for May is 73° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in North Alton. See also: June | July | August.

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July 2026

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