Lakes by the Bay · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Lakes by the Bay & 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°
Mon, Sep 7
Coldest night
24°
Fri, Sep 4
Days with precip
6 / 14
of 14 forecast days
Nicest day
Thu, Sep 10
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
35° 26°
78% precip chance
Sat 12 – Sun 13 Sep
33° 27°
40% precip chance
Sat 19 – Sun 20 Sep
36° 28°
typical range
Sat 26 – Sun 27 Sep
36° 28°
typical range
30 days — Lakes by the Bay
14 forecast + 16 climatology
Fri · Today Showers
34°24°112.2 mm⌄
Wind10 mph SE
Gusts19 mph
UV index10 – Very high
Precip chance85%
Sunrise07:03
Sunset19:37
Sat · Tomorrow Mostly cloudy
33°27°7.8 mm⌄
Wind8 mph SE
Gusts19 mph
UV index11 – Very high
Precip chance78%
Sunrise07:03
Sunset19:36
Sunday 6/9 Showers
35°26°8.2 mm⌄
Wind8 mph S
Gusts13 mph
UV index11 – Very high
Precip chance74%
Sunrise07:03
Sunset19:35
Monday 7/9 Sunny
35°26°0.7 mm⌄
Wind13 mph S
Gusts22 mph
UV index8 – Very high
Precip chance36%
Sunrise07:04
Sunset19:34
Tuesday 8/9 Mostly cloudy
34°26°8.7 mm⌄
Wind13 mph E
Gusts19 mph
UV index8 – Very high
Precip chance73%
Sunrise07:04
Sunset19:33
Wednesday 9/9 Sunny
33°26°1.0 mm⌄
Wind13 mph E
Gusts22 mph
UV index8 – Very high
Precip chance45%
Sunrise07:04
Sunset19:32
Thursday 10/9 Sunny
33°27°0.1 mm⌄
Wind13 mph E
Gusts22 mph
UV index8 – Very high
Precip chance17%
Sunrise07:05
Sunset19:31
Friday 11/9 Partly cloudy
33°27°0.1 mm⌄
Wind13 mph E
Gusts21 mph
UV index8 – Very high
Precip chance17%
Sunrise07:05
Sunset19:30
Saturday 12/9 Sunny
33°27°17%⌄
Wind14 mph E
Gusts25 mph
UV index8 – Very high
Precip chance17%
Sunrise07:06
Sunset19:29
Sunday 13/9 Showers
33°27°0.5 mm⌄
Wind15 mph E
Gusts26 mph
UV index7 – High
Precip chance40%
Sunrise07:06
Sunset19:28
Monday 14/9 Partly cloudy
33°27°0.1 mm⌄
Wind14 mph E
Gusts25 mph
UV index7 – High
Precip chance19%
Sunrise07:06
Sunset19:26
Tuesday 15/9 Showers
31°27°0.7 mm⌄
Wind15 mph E
Gusts25 mph
UV index8 – Very high
Precip chance40%
Sunrise07:07
Sunset19:25
Wednesday 16/9 Sunny
32°26°1.8 mm⌄
Wind14 mph E
Gusts18 mph
UV index8 – Very high
Precip chance57%
Sunrise07:07
Sunset19:24
Thursday 17/9 Showers
31°26°2.4 mm⌄
Wind11 mph E
Gusts22 mph
UV index7 – High
Precip chance66%
Sunrise07:08
Sunset19:23
Friday 18/9 Rain (climatological)
34°27°35.0 mm⌄
Day≈31–37°
Night≈24–30°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
36°28°20%⌄
Day≈33–39°
Night≈25–31°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
36°28°20%⌄
Day≈33–39°
Night≈25–31°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
33°27°35.0 mm⌄
Day≈30–36°
Night≈24–30°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
33°26°20%⌄
Day≈30–36°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
32°26°20%⌄
Day≈29–35°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
30°24°33.0 mm⌄
Day≈27–33°
Night≈21–27°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
32°26°20%⌄
Day≈29–35°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
35°28°20%⌄
Day≈32–38°
Night≈25–31°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
36°28°37.0 mm⌄
Day≈33–39°
Night≈25–31°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
35°28°20%⌄
Day≈32–38°
Night≈25–31°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
31°25°20%⌄
Day≈28–34°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
29°24°18.0 mm⌄
Day≈26–32°
Night≈21–27°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
28°23°20%⌄
Day≈25–31°
Night≈20–26°
Precip≈11.8 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Partly cloudy (climatological)
30°24°20%⌄
Day≈27–33°
Night≈21–27°
Precip≈11.8 in / October
(climatological)Typical range for these dates · 1991–2020
Saturday 3/10 Rain (climatological)
33°26°39.0 mm⌄
Day≈30–36°
Night≈23–29°
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 Lakes by the Bay, 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.