Franklin Square · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Franklin Square & 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
34°
Fri, Sep 4
Coldest night
18°
Thu, Sep 10
Days with precip
11 / 14
of 14 forecast days
Nicest day
Sun, Sep 13
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
28° 20°
64% precip chance
Sat 12 – Sun 13 Sep
29° 19°
61% precip chance
Sat 19 – Sun 20 Sep
26° 20°
typical range
Sat 26 – Sun 27 Sep
25° 19°
typical range
30 days — Franklin Square
14 forecast + 16 climatology
Tue · Today Mostly cloudy
34°24°1.6 mm⌄
Wind7 mph SW
Gusts16 mph
UV index8 – Very high
Precip chance57%
Sunrise06:35
Sunset19:37
Wed · Tomorrow Showers
30°24°2.7 mm⌄
Wind14 mph E
Gusts20 mph
UV index7 – High
Precip chance68%
Sunrise06:36
Sunset19:36
Thursday 3/9 Showers
34°23°11.0 mm⌄
Wind12 mph SW
Gusts18 mph
UV index8 – Very high
Precip chance82%
Sunrise06:37
Sunset19:34
Friday 4/9 Thunderstorms
34°24°10.2 mm⌄
Wind10 mph S
Gusts22 mph
UV index7 – High
Precip chance78%
Sunrise06:37
Sunset19:33
Saturday 5/9 Mostly cloudy
28°22°3.5 mm⌄
Wind10 mph NE
Gusts16 mph
UV index7 – High
Precip chance64%
Sunrise06:38
Sunset19:31
Sunday 6/9 Sunny
25°20°0.9 mm⌄
Wind7 mph E
Gusts18 mph
UV index6 – High
Precip chance38%
Sunrise06:39
Sunset19:30
Monday 7/9 Showers
24°19°3.9 mm⌄
Wind9 mph SE
Gusts12 mph
UV index6 – High
Precip chance63%
Sunrise06:40
Sunset19:28
Tuesday 8/9 Mostly cloudy
25°20°2.2 mm⌄
Wind12 mph S
Gusts21 mph
UV index6 – High
Precip chance64%
Sunrise06:41
Sunset19:26
Wednesday 9/9 Showers
27°20°19.1 mm⌄
Wind11 mph N
Gusts21 mph
UV index6 – High
Precip chance86%
Sunrise06:42
Sunset19:25
Thursday 10/9 Showers
20°18°3.7 mm⌄
Wind18 mph N
Gusts31 mph
UV index4 – Moderate
Precip chance80%
Sunrise06:43
Sunset19:23
Friday 11/9 Showers
22°19°6.9 mm⌄
Wind17 mph N
Gusts32 mph
UV index5 – Moderate
Precip chance84%
Sunrise06:44
Sunset19:22
Saturday 12/9 Showers
23°19°1.2 mm⌄
Wind15 mph N
Gusts30 mph
UV index5 – Moderate
Precip chance61%
Sunrise06:45
Sunset19:20
Sunday 13/9 Mostly cloudy
29°21°8%⌄
Wind8 mph N
Gusts16 mph
UV index7 – High
Precip chance8%
Sunrise06:46
Sunset19:18
Monday 14/9 Sunny
31°23°3%⌄
Wind5 mph N
Gusts9 mph
UV index8 – Very high
Precip chance3%
Sunrise06:47
Sunset19:17
Tuesday 15/9 Rain (climatological)
26°20°12.6 mm⌄
Day≈23–29°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
28°21°20%⌄
Day≈25–31°
Night≈18–24°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
29°22°20%⌄
Day≈26–32°
Night≈19–25°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
28°21°15.0 mm⌄
Day≈25–31°
Night≈18–24°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
25°20°20%⌄
Day≈22–28°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
26°20°20%⌄
Day≈23–29°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
27°20°12.1 mm⌄
Day≈24–30°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
26°20°20%⌄
Day≈23–29°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
29°22°20%⌄
Day≈26–32°
Night≈19–25°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
31°23°7.3 mm⌄
Day≈28–34°
Night≈20–26°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
29°22°20%⌄
Day≈26–32°
Night≈19–25°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
25°20°20%⌄
Day≈22–28°
Night≈17–23°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
25°19°9.2 mm⌄
Day≈22–28°
Night≈16–22°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
24°19°20%⌄
Day≈21–27°
Night≈16–22°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
29°22°20%⌄
Day≈26–32°
Night≈19–25°
Precip≈5.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
29°22°19.3 mm⌄
Day≈26–32°
Night≈19–25°
Precip≈5.7 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 Franklin Square, 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.