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
91°
Thu, Aug 20
Coldest night
65°
Thu, Aug 27
Days with precip
8 / 14
of 14 forecast days
Nicest day
Sun, Aug 30
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
87° 71°
84% precip chance
Sat 29 – Sun 30 Aug
81° 67°
5% precip chance
Sat 5 – Sun 6 Sep
77° 64°
typical range
Sat 12 – Sun 13 Sep
81° 65°
typical range
30 days — Franklin Square
14 forecast + 16 climatology
Thu · Today Sunny
91°70°0.6 mm⌄
Wind9 mph N
Gusts18 mph
UV index8 – High
Precip chance37%
Sunrise06:24
Sunset19:55
Fri · Tomorrow Mostly cloudy
82°71°1.0 mm⌄
Wind11 mph SE
Gusts17 mph
UV index6 – High
Precip chance58%
Sunrise06:25
Sunset19:54
Saturday 22/8 Showers
78°71°8.7 mm⌄
Wind12 mph E
Gusts19 mph
UV index7 – High
Precip chance84%
Sunrise06:26
Sunset19:52
Sunday 23/8 Mostly cloudy
87°71°2.6 mm⌄
Wind9 mph N
Gusts16 mph
UV index8 – High
Precip chance68%
Sunrise06:26
Sunset19:51
Monday 24/8 Sunny
82°68°2%⌄
Wind8 mph NW
Gusts17 mph
UV index7 – High
Precip chance2%
Sunrise06:27
Sunset19:49
Tuesday 25/8 Sunny
84°71°8.2 mm⌄
Wind10 mph S
Gusts19 mph
UV index6 – High
Precip chance69%
Sunrise06:28
Sunset19:48
Wednesday 26/8 Showers
75°73°24.8 mm⌄
Wind16 mph S
Gusts25 mph
UV index5 – Moderate
Precip chance91%
Sunrise06:29
Sunset19:46
Thursday 27/8 Mostly cloudy
72°65°6.6 mm⌄
Wind14 mph SW
Gusts26 mph
UV index6 – High
Precip chance75%
Sunrise06:30
Sunset19:45
Friday 28/8 Sunny
80°65°5%⌄
Wind12 mph W
Gusts21 mph
UV index7 – High
Precip chance5%
Sunrise06:31
Sunset19:44
Saturday 29/8 Sunny
81°67°5%⌄
Wind8 mph NW
Gusts17 mph
UV index7 – High
Precip chance5%
Sunrise06:32
Sunset19:42
Sunday 30/8 Sunny
80°67°4%⌄
Wind10 mph SE
Gusts21 mph
UV index7 – High
Precip chance4%
Sunrise06:33
Sunset19:40
Monday 31/8 Mostly cloudy
85°71°1.9 mm⌄
Wind17 mph S
Gusts30 mph
UV index6 – High
Precip chance63%
Sunrise06:34
Sunset19:39
Tuesday 1/9 Showers
83°71°1.9 mm⌄
Wind12 mph S
Gusts29 mph
UV index7 – High
Precip chance58%
Sunrise06:35
Sunset19:37
Wednesday 2/9 Mostly cloudy
83°71°11%⌄
Wind9 mph E
Gusts16 mph
UV index7 – High
Precip chance11%
Sunrise06:36
Sunset19:36
Thursday 3/9 Rain (climatological)
72°62°10.6 mm⌄
Day≈67–78°
Night≈56–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
76°64°20%⌄
Day≈70–81°
Night≈58–69°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
77°65°20%⌄
Day≈72–82°
Night≈59–70°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
76°64°12.6 mm⌄
Day≈70–81°
Night≈59–69°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
71°61°20%⌄
Day≈65–76°
Night≈56–66°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
73°62°20%⌄
Day≈67–78°
Night≈57–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
73°62°10.2 mm⌄
Day≈68–79°
Night≈57–68°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
73°62°20%⌄
Day≈67–78°
Night≈57–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
78°65°20%⌄
Day≈72–83°
Night≈60–71°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
81°67°6.1 mm⌄
Day≈76–86°
Night≈62–73°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
78°65°20%⌄
Day≈73–83°
Night≈60–71°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
71°61°20%⌄
Day≈65–76°
Night≈55–66°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
70°60°7.7 mm⌄
Day≈65–75°
Night≈55–66°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
69°60°20%⌄
Day≈63–74°
Night≈54–65°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
77°65°20%⌄
Day≈72–82°
Night≈59–70°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
77°65°16.3 mm⌄
Day≈72–83°
Night≈59–70°
Precip≈4.8 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.