Colonial Park · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Colonial Park & 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
35°
Fri, Sep 11
Coldest night
10°
Wed, Sep 9
Days with precip
5 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
26° 12°
24% precip chance
Sat 12 – Sun 13 Sep
25° 12°
11% precip chance
Sat 19 – Sun 20 Sep
28° 16°
typical range
Sat 26 – Sun 27 Sep
28° 16°
typical range
30 days — Colonial Park
14 forecast + 16 climatology
Wed · Today Heavy rain
28°21°135.9 mm⌄
Wind11 mph E
Gusts20 mph
UV index4 – Moderate
Precip chance89%
Sunrise06:35
Sunset19:38
Thu · Tomorrow Fog
32°20°9.8 mm⌄
Wind9 mph W
Gusts19 mph
UV index8 – High
Precip chance88%
Sunrise06:36
Sunset19:36
Friday 4/9 Showers
30°21°6.4 mm⌄
Wind14 mph W
Gusts22 mph
UV index7 – High
Precip chance79%
Sunrise06:37
Sunset19:34
Saturday 5/9 Sunny
26°17°0.3 mm⌄
Wind9 mph N
Gusts24 mph
UV index7 – High
Precip chance24%
Sunrise06:38
Sunset19:33
Sunday 6/9 Sunny
24°12°9%⌄
Wind8 mph SE
Gusts19 mph
UV index6 – High
Precip chance9%
Sunrise06:39
Sunset19:31
Monday 7/9 Mostly cloudy
26°15°12%⌄
Wind9 mph S
Gusts21 mph
UV index7 – High
Precip chance12%
Sunrise06:40
Sunset19:29
Tuesday 8/9 Showers
22°12°15.4 mm⌄
Wind13 mph N
Gusts26 mph
UV index5 – Moderate
Precip chance92%
Sunrise06:41
Sunset19:28
Wednesday 9/9 Sunny
20°10°0.3 mm⌄
Wind12 mph N
Gusts24 mph
UV index6 – High
Precip chance24%
Sunrise06:42
Sunset19:26
Thursday 10/9 Mostly cloudy
24°11°0.9 mm⌄
Wind12 mph S
Gusts34 mph
UV index5 – Moderate
Precip chance55%
Sunrise06:43
Sunset19:25
Friday 11/9 Sunny
35°21°6%⌄
Wind16 mph W
Gusts33 mph
UV index9 – Very high
Precip chance6%
Sunrise06:44
Sunset19:23
Saturday 12/9 Mostly cloudy
25°16°11%⌄
Wind9 mph N
Gusts22 mph
UV index6 – High
Precip chance11%
Sunrise06:45
Sunset19:21
Sunday 13/9 Mostly cloudy
23°12°11%⌄
Wind9 mph SE
Gusts24 mph
UV index6 – High
Precip chance11%
Sunrise06:46
Sunset19:20
Monday 14/9 Mostly cloudy
32°19°6.0 mm⌄
Wind10 mph W
Gusts24 mph
UV index7 – High
Precip chance75%
Sunrise06:47
Sunset19:18
Tuesday 15/9 Mostly cloudy
22°13°0.4 mm⌄
Wind14 mph N
Gusts21 mph
UV index5 – Moderate
Precip chance42%
Sunrise06:48
Sunset19:16
Wednesday 16/9 Rain (climatological)
26°16°31.0 mm⌄
Day≈23–29°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
29°17°20%⌄
Day≈26–32°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
28°17°17.0 mm⌄
Day≈25–31°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
27°16°20%⌄
Day≈24–30°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
24°14°20%⌄
Day≈21–27°
Night≈11–17°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
25°15°16.0 mm⌄
Day≈22–28°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
27°17°20%⌄
Day≈24–30°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
28°17°20%⌄
Day≈25–31°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
29°17°40.0 mm⌄
Day≈26–32°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
28°17°20%⌄
Day≈25–31°
Night≈14–20°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
26°16°20%⌄
Day≈23–29°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
24°15°25.0 mm⌄
Day≈21–27°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
24°14°20%⌄
Day≈21–27°
Night≈11–17°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
26°16°20%⌄
Day≈23–29°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
22°11°33.0 mm⌄
Day≈19–25°
Night≈8–14°
Precip≈11.8 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 Colonial Park, 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.