Old Town · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Old Town & 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
36°
Thu, Sep 3
Coldest night
18°
Sun, Sep 6
Days with precip
4 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
30° 21°
28% precip chance
Sat 5 – Sun 6 Sep
23° 18°
90% precip chance
Sat 12 – Sun 13 Sep
27° 20°
typical range
Sat 19 – Sun 20 Sep
29° 20°
typical range
30 days — Old Town
14 forecast + 16 climatology
Fri · Today Light rain
30°22°10.1 mm⌄
Wind7 mph NE
Gusts16 mph
UV index7 – High
Precip chance84%
Sunrise06:31
Sunset19:43
Sat · Tomorrow Mostly cloudy
28°21°0.2 mm⌄
Wind9 mph NE
Gusts18 mph
UV index7 – High
Precip chance28%
Sunrise06:32
Sunset19:42
Sunday 30/8 Sunny
30°22°0.1 mm⌄
Wind10 mph S
Gusts22 mph
UV index7 – High
Precip chance17%
Sunrise06:33
Sunset19:40
Monday 31/8 Mostly cloudy
34°24°0.3 mm⌄
Wind8 mph S
Gusts23 mph
UV index8 – Very high
Precip chance36%
Sunrise06:34
Sunset19:39
Tuesday 1/9 Mostly cloudy
34°23°0.5 mm⌄
Wind13 mph W
Gusts20 mph
UV index8 – Very high
Precip chance38%
Sunrise06:35
Sunset19:37
Wednesday 2/9 Showers
34°25°0.3 mm⌄
Wind10 mph S
Gusts22 mph
UV index8 – Very high
Precip chance36%
Sunrise06:36
Sunset19:36
Thursday 3/9 Partly cloudy
36°22°0.1 mm⌄
Wind11 mph E
Gusts21 mph
UV index9 – Very high
Precip chance17%
Sunrise06:36
Sunset19:34
Friday 4/9 Sunny
29°23°4%⌄
Wind14 mph N
Gusts19 mph
UV index7 – High
Precip chance4%
Sunrise06:37
Sunset19:33
Saturday 5/9 Showers
23°19°2.0 mm⌄
Wind11 mph SE
Gusts17 mph
UV index6 – High
Precip chance62%
Sunrise06:38
Sunset19:31
Sunday 6/9 Showers
19°18°10.6 mm⌄
Wind14 mph E
Gusts18 mph
UV index4 – Moderate
Precip chance90%
Sunrise06:39
Sunset19:29
Monday 7/9 Sunny
25°19°8%⌄
Wind9 mph SE
Gusts15 mph
UV index7 – High
Precip chance8%
Sunrise06:40
Sunset19:28
Tuesday 8/9 Sunny
28°21°1.0 mm⌄
Wind12 mph SE
Gusts23 mph
UV index7 – High
Precip chance57%
Sunrise06:41
Sunset19:26
Wednesday 9/9 Mostly cloudy
31°23°0.6 mm⌄
Wind10 mph S
Gusts21 mph
UV index8 – Very high
Precip chance42%
Sunrise06:42
Sunset19:25
Thursday 10/9 Sunny
33°25°0.9 mm⌄
Wind10 mph NW
Gusts15 mph
UV index8 – Very high
Precip chance45%
Sunrise06:43
Sunset19:23
Friday 11/9 Rain (climatological)
26°19°4.8 mm⌄
Day≈23–29°
Night≈16–22°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
27°20°20%⌄
Day≈24–30°
Night≈17–23°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
27°20°20%⌄
Day≈24–30°
Night≈17–23°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
28°20°7.2 mm⌄
Day≈25–31°
Night≈17–23°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
25°18°20%⌄
Day≈22–28°
Night≈15–21°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
25°18°20%⌄
Day≈22–28°
Night≈15–21°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
23°17°3.7 mm⌄
Day≈20–26°
Night≈14–20°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
26°19°20%⌄
Day≈23–29°
Night≈16–22°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
29°21°20%⌄
Day≈26–32°
Night≈18–24°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
28°20°7.2 mm⌄
Day≈25–31°
Night≈17–23°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
28°20°20%⌄
Day≈25–31°
Night≈17–23°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
26°19°20%⌄
Day≈23–29°
Night≈16–22°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
24°18°3.3 mm⌄
Day≈21–27°
Night≈15–21°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
23°17°20%⌄
Day≈20–26°
Night≈14–20°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
26°19°20%⌄
Day≈23–29°
Night≈16–22°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
27°19°7.0 mm⌄
Day≈24–30°
Night≈16–22°
Precip≈2.3 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 Old Town, 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.