Cowan · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Cowan & 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
94°
Thu, Sep 3
Coldest night
66°
Wed, Sep 16
Days with precip
2 / 14
of 14 forecast days
Nicest day
Wed, Sep 16
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
89° 71°
17% precip chance
Sat 12 – Sun 13 Sep
89° 73°
57% precip chance
Sat 19 – Sun 20 Sep
92° 75°
typical range
Sat 26 – Sun 27 Sep
91° 75°
typical range
30 days — Cowan
14 forecast + 16 climatology
Thu · Today Sunny
94°73°17%⌄
Wind7 mph N
Gusts14 mph
UV index9 – Very high
Precip chance17%
Sunrise06:18
Sunset19:08
Fri · Tomorrow Sunny
89°78°0.3 mm⌄
Wind13 mph NE
Gusts23 mph
UV index9 – Very high
Precip chance36%
Sunrise06:18
Sunset19:07
Saturday 5/9 Sunny
89°78°0.2 mm⌄
Wind10 mph W
Gusts15 mph
UV index9 – Very high
Precip chance17%
Sunrise06:19
Sunset19:05
Sunday 6/9 Sunny
87°71°8%⌄
Wind7 mph NE
Gusts20 mph
UV index8 – Very high
Precip chance8%
Sunrise06:20
Sunset19:04
Monday 7/9 Showers
80°67°1.8 mm⌄
Wind9 mph SE
Gusts24 mph
UV index7 – High
Precip chance63%
Sunrise06:21
Sunset19:03
Tuesday 8/9 Mostly cloudy
77°69°19%⌄
Wind7 mph SE
Gusts15 mph
UV index7 – High
Precip chance19%
Sunrise06:21
Sunset19:01
Wednesday 9/9 Sunny
83°73°6%⌄
Wind7 mph S
Gusts11 mph
UV index7 – High
Precip chance6%
Sunrise06:22
Sunset19:00
Thursday 10/9 Sunny
88°76°5%⌄
Wind8 mph SW
Gusts16 mph
UV index8 – Very high
Precip chance5%
Sunrise06:23
Sunset18:58
Friday 11/9 Sunny
87°77°4%⌄
Wind9 mph N
Gusts16 mph
UV index8 – Very high
Precip chance4%
Sunrise06:24
Sunset18:57
Saturday 12/9 Sunny
87°73°2%⌄
Wind5 mph E
Gusts15 mph
UV index8 – Very high
Precip chance2%
Sunrise06:24
Sunset18:55
Sunday 13/9 Sunny
89°76°2.6 mm⌄
Wind7 mph W
Gusts15 mph
UV index8 – Very high
Precip chance57%
Sunrise06:25
Sunset18:54
Monday 14/9 Sunny
91°77°0.4 mm⌄
Wind10 mph SW
Gusts19 mph
UV index8 – Very high
Precip chance36%
Sunrise06:26
Sunset18:53
Tuesday 15/9 Mostly cloudy
86°76°13%⌄
Wind13 mph W
Gusts30 mph
UV index6 – High
Precip chance13%
Sunrise06:26
Sunset18:51
Wednesday 16/9 Sunny
78°66°3%⌄
Wind9 mph N
Gusts16 mph
UV index7 – High
Precip chance3%
Sunrise06:27
Sunset18:50
Thursday 17/9 Light rain (climatological)
87°74°2.0 mm⌄
Day≈82–93°
Night≈69–80°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
91°76°20%⌄
Day≈85–96°
Night≈71–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
92°77°20%⌄
Day≈87–97°
Night≈72–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
89°75°0.9 mm⌄
Day≈83–94°
Night≈69–80°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
85°73°20%⌄
Day≈79–90°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
81°71°20%⌄
Day≈76–87°
Night≈65–76°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
83°72°1.4 mm⌄
Day≈78–89°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
87°74°20%⌄
Day≈81–92°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
90°76°20%⌄
Day≈85–96°
Night≈71–81°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
89°75°0.8 mm⌄
Day≈83–94°
Night≈70–80°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
91°76°20%⌄
Day≈85–96°
Night≈71–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
83°72°20%⌄
Day≈78–88°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Light rain (climatological)
84°72°1.6 mm⌄
Day≈79–90°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
82°71°20%⌄
Day≈77–88°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
76°65°20%⌄
Day≈71–82°
Night≈59–70°
Precip≈0.6 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Light rain (climatological)
80°67°1.6 mm⌄
Day≈75–85°
Night≈62–73°
Precip≈0.6 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 Cowan, 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.