Glen Ellyn · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Glen Ellyn & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
30°
Tue, Aug 25
Coldest night
12°
Fri, Sep 4
Days with precip
6 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
28° 18°
82% precip chance
Sat 5 – Sun 6 Sep
23° 14°
21% precip chance
Sat 12 – Sun 13 Sep
19° 11°
typical range
Sat 19 – Sun 20 Sep
20° 11°
typical range
30 days — Glen Ellyn
14 forecast + 16 climatology
Tue · Today Mostly cloudy
30°15°10%⌄
Wind6 mph S
Gusts15 mph
UV index7 – High
Precip chance10%
Sunrise06:10
Sunset19:37
Wed · Tomorrow Showers
26°18°1.4 mm⌄
Wind11 mph SW
Gusts21 mph
UV index7 – High
Precip chance60%
Sunrise06:11
Sunset19:36
Thursday 27/8 Sunny
27°18°17%⌄
Wind9 mph NW
Gusts20 mph
UV index7 – High
Precip chance17%
Sunrise06:12
Sunset19:34
Friday 28/8 Sunny
27°18°17%⌄
Wind7 mph NE
Gusts15 mph
UV index7 – High
Precip chance17%
Sunrise06:14
Sunset19:33
Saturday 29/8 Mostly cloudy
28°18°15.2 mm⌄
Wind12 mph SW
Gusts20 mph
UV index7 – High
Precip chance82%
Sunrise06:15
Sunset19:31
Sunday 30/8 Sunny
28°20°9.0 mm⌄
Wind9 mph SW
Gusts31 mph
UV index7 – High
Precip chance81%
Sunrise06:16
Sunset19:29
Monday 31/8 Thunderstorms
29°21°1.2 mm⌄
Wind12 mph SW
Gusts28 mph
UV index6 – High
Precip chance63%
Sunrise06:17
Sunset19:28
Tuesday 1/9 Sunny
25°20°0.6 mm⌄
Wind12 mph NW
Gusts27 mph
UV index6 – High
Precip chance38%
Sunrise06:18
Sunset19:26
Wednesday 2/9 Showers
19°15°0.8 mm⌄
Wind9 mph N
Gusts15 mph
UV index5 – Moderate
Precip chance42%
Sunrise06:19
Sunset19:24
Thursday 3/9 Mostly cloudy
17°12°8.6 mm⌄
Wind6 mph SW
Gusts15 mph
UV index4 – Moderate
Precip chance83%
Sunrise06:20
Sunset19:23
Friday 4/9 Showers
21°12°0.3 mm⌄
Wind9 mph NE
Gusts16 mph
UV index5 – Moderate
Precip chance37%
Sunrise06:21
Sunset19:21
Saturday 5/9 Partly cloudy
21°14°0.1 mm⌄
Wind10 mph NE
Gusts17 mph
UV index5 – Moderate
Precip chance21%
Sunrise06:22
Sunset19:19
Sunday 6/9 Sunny
23°16°7%⌄
Wind7 mph E
Gusts13 mph
UV index6 – High
Precip chance7%
Sunrise06:23
Sunset19:17
Monday 7/9 Showers
18°13°16.7 mm⌄
Wind6 mph S
Gusts18 mph
UV index3 – Moderate
Precip chance91%
Sunrise06:24
Sunset19:16
Tuesday 8/9 Rain (climatological)
20°13°11.8 mm⌄
Day≈17–23°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
21°13°20%⌄
Day≈18–24°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
23°14°20%⌄
Day≈20–26°
Night≈11–17°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
21°13°10.2 mm⌄
Day≈18–24°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
19°12°20%⌄
Day≈16–22°
Night≈9–15°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
17°11°20%⌄
Day≈14–20°
Night≈8–14°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
16°11°13.4 mm⌄
Day≈13–19°
Night≈8–14°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
20°13°20%⌄
Day≈17–23°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
23°15°20%⌄
Day≈20–26°
Night≈12–18°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
23°15°13.4 mm⌄
Day≈20–26°
Night≈12–18°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
22°14°20%⌄
Day≈19–25°
Night≈11–17°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
20°13°20%⌄
Day≈17–23°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
18°11°12.6 mm⌄
Day≈15–21°
Night≈8–14°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
19°12°20%⌄
Day≈16–22°
Night≈9–15°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
21°13°20%⌄
Day≈18–24°
Night≈10–16°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
22°14°13.0 mm⌄
Day≈19–25°
Night≈11–17°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for Glen Ellyn, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.