Alum Creek · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Alum Creek & 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
32°
Wed, Sep 9
Coldest night
12°
Tue, Sep 15
Days with precip
4 / 14
of 14 forecast days
Nicest day
Tue, Sep 15
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 12 – Sun 13 Sep
29° 13°
18% precip chance
Sat 19 – Sun 20 Sep
31° 16°
typical range
Sat 26 – Sun 27 Sep
28° 15°
typical range
Sat 3 – Sun 4 Oct
22° 10°
typical range
30 days — Alum Creek
14 forecast + 16 climatology
Sun · Today Sunny
29°19°6%⌄
Wind8 mph N
Gusts27 mph
UV index8 – High
Precip chance6%
Sunrise07:01
Sunset19:49
Mon · Tomorrow Sunny
28°17°7%⌄
Wind9 mph E
Gusts15 mph
UV index7 – High
Precip chance7%
Sunrise07:02
Sunset19:48
Tuesday 8/9 Mostly cloudy
29°17°11%⌄
Wind6 mph SW
Gusts9 mph
UV index7 – High
Precip chance11%
Sunrise07:02
Sunset19:46
Wednesday 9/9 Sunny
32°19°5%⌄
Wind10 mph W
Gusts29 mph
UV index8 – High
Precip chance5%
Sunrise07:03
Sunset19:45
Thursday 10/9 Showers
31°20°5.0 mm⌄
Wind11 mph SW
Gusts31 mph
UV index8 – Very high
Precip chance72%
Sunrise07:04
Sunset19:43
Friday 11/9 Showers
24°15°2.9 mm⌄
Wind7 mph N
Gusts19 mph
UV index6 – High
Precip chance76%
Sunrise07:05
Sunset19:42
Saturday 12/9 Partly cloudy
25°13°18%⌄
Wind6 mph SE
Gusts16 mph
UV index6 – High
Precip chance18%
Sunrise07:06
Sunset19:40
Sunday 13/9 Sunny
29°19°8%⌄
Wind8 mph SW
Gusts24 mph
UV index7 – High
Precip chance8%
Sunrise07:07
Sunset19:39
Monday 14/9 Sunny
25°16°1.3 mm⌄
Wind9 mph N
Gusts28 mph
UV index6 – High
Precip chance58%
Sunrise07:08
Sunset19:37
Tuesday 15/9 Sunny
23°12°3%⌄
Wind8 mph NE
Gusts18 mph
UV index6 – High
Precip chance3%
Sunrise07:09
Sunset19:35
Wednesday 16/9 Sunny
28°13°6%⌄
Wind5 mph NE
Gusts14 mph
UV index7 – High
Precip chance6%
Sunrise07:09
Sunset19:34
Thursday 17/9 Mostly cloudy
29°16°15%⌄
Wind7 mph W
Gusts11 mph
UV index7 – High
Precip chance15%
Sunrise07:10
Sunset19:32
Friday 18/9 Mostly cloudy
28°22°0.6 mm⌄
Wind7 mph SW
Gusts10 mph
UV index6 – High
Precip chance53%
Sunrise07:11
Sunset19:31
Saturday 19/9 Mostly cloudy
31°21°5.2 mm⌄
Wind3 mph E
Gusts14 mph
UV index7 – High
Precip chance82%
Sunrise07:12
Sunset19:29
Sunday 20/9 Rain (climatological)
27°16°3.9 mm⌄
Day≈24–30°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
29°18°3.0 mm⌄
Day≈26–32°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
26°16°20%⌄
Day≈23–29°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
24°15°20%⌄
Day≈21–27°
Night≈12–18°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
25°15°3.0 mm⌄
Day≈22–28°
Night≈12–18°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
28°17°20%⌄
Day≈25–31°
Night≈14–20°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
31°19°2.9 mm⌄
Day≈28–34°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
20°11°20%⌄
Day≈17–23°
Night≈8–14°
Precip≈1.3 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Rain (climatological)
20°10°2.3 mm⌄
Day≈17–23°
Night≈7–13°
Precip≈1.3 in / October
(climatological)Typical range for these dates · 1991–2020
Saturday 3/10 Partly cloudy (climatological)
20°10°20%⌄
Day≈17–23°
Night≈7–13°
Precip≈1.3 in / October
(climatological)Typical range for these dates · 1991–2020
Sunday 4/10 Partly cloudy (climatological)
22°12°20%⌄
Day≈19–25°
Night≈9–15°
Precip≈1.3 in / October
(climatological)Typical range for these dates · 1991–2020
Monday 5/10 Rain (climatological)
23°12°2.8 mm⌄
Day≈20–26°
Night≈9–15°
Precip≈1.3 in / October
(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 Alum Creek, 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.