Little Cottonwood Creek Valley · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Little Cottonwood Creek Valley & 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
28°
Mon, Sep 14
Coldest night
1°
Thu, Sep 17
Days with precip
3 / 14
of 14 forecast days
Nicest day
Tue, Sep 15
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
26° 12°
57% precip chance
Sat 12 – Sun 13 Sep
27° 16°
67% precip chance
Sat 19 – Sun 20 Sep
28° 13°
typical range
Sat 26 – Sun 27 Sep
27° 13°
typical range
30 days — Little Cottonwood Creek Valley
14 forecast + 16 climatology
Fri · Today Sunny
26°13°0%⌄
Wind18 mph SW
Gusts28 mph
UV index8 – Very high
Precip chance0%
Sunrise06:57
Sunset19:55
Sat · Tomorrow Sunny
26°13°0%⌄
Wind13 mph SW
Gusts20 mph
UV index8 – Very high
Precip chance0%
Sunrise06:58
Sunset19:53
Sunday 6/9 Sunny
23°12°4.0 mm⌄
Wind10 mph SW
Gusts18 mph
UV index8 – High
Precip chance57%
Sunrise06:59
Sunset19:51
Monday 7/9 Sunny
23°10°0.6 mm⌄
Wind15 mph SW
Gusts20 mph
UV index6 – High
Precip chance36%
Sunrise07:00
Sunset19:50
Tuesday 8/9 Sunny
25°12°1%⌄
Wind8 mph SW
Gusts18 mph
UV index6 – High
Precip chance1%
Sunrise07:01
Sunset19:48
Wednesday 9/9 Mostly cloudy
27°16°8%⌄
Wind9 mph SW
Gusts16 mph
UV index7 – High
Precip chance8%
Sunrise07:02
Sunset19:46
Thursday 10/9 Mostly cloudy
25°16°6%⌄
Wind10 mph NW
Gusts15 mph
UV index6 – High
Precip chance6%
Sunrise07:03
Sunset19:45
Friday 11/9 Partly cloudy
26°16°6%⌄
Wind8 mph W
Gusts19 mph
UV index7 – High
Precip chance6%
Sunrise07:04
Sunset19:43
Saturday 12/9 Showers
25°16°4.2 mm⌄
Wind6 mph SW
Gusts14 mph
UV index5 – Moderate
Precip chance67%
Sunrise07:05
Sunset19:41
Sunday 13/9 Sunny
27°16°1.0 mm⌄
Wind8 mph SW
Gusts17 mph
UV index7 – High
Precip chance57%
Sunrise07:06
Sunset19:40
Monday 14/9 Sunny
28°18°3%⌄
Wind15 mph SW
Gusts18 mph
UV index7 – High
Precip chance3%
Sunrise07:07
Sunset19:38
Tuesday 15/9 Sunny
25°15°0%⌄
Wind8 mph NW
Gusts16 mph
UV index6 – High
Precip chance0%
Sunrise07:08
Sunset19:36
Wednesday 16/9 Sunny
17°3°3%⌄
Wind8 mph NW
Gusts19 mph
UV index4 – Moderate
Precip chance3%
Sunrise07:09
Sunset19:35
Thursday 17/9 Sunny
14°1°1%⌄
Wind9 mph W
Gusts17 mph
UV index4 – Moderate
Precip chance1%
Sunrise07:10
Sunset19:33
Friday 18/9 Rain (climatological)
25°13°2.6 mm⌄
Day≈22–28°
Night≈10–16°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
25°13°20%⌄
Day≈22–28°
Night≈10–16°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
28°15°20%⌄
Day≈25–31°
Night≈12–18°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
27°14°2.8 mm⌄
Day≈24–30°
Night≈11–17°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
22°12°20%⌄
Day≈19–25°
Night≈9–15°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
21°11°20%⌄
Day≈18–24°
Night≈8–14°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Light rain (climatological)
22°11°1.3 mm⌄
Day≈19–25°
Night≈8–14°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
25°13°20%⌄
Day≈22–28°
Night≈10–16°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
26°13°20%⌄
Day≈23–29°
Night≈10–16°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Light rain (climatological)
27°14°1.7 mm⌄
Day≈24–30°
Night≈11–17°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
26°14°20%⌄
Day≈23–29°
Night≈11–17°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
22°12°20%⌄
Day≈19–25°
Night≈9–15°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
20°10°2.8 mm⌄
Day≈17–23°
Night≈7–13°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
16°6°20%⌄
Day≈13–19°
Night≈3–9°
Precip≈0.8 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Partly cloudy (climatological)
16°6°20%⌄
Day≈13–19°
Night≈3–9°
Precip≈0.8 in / October
(climatological)Typical range for these dates · 1991–2020
Saturday 3/10 Light rain (climatological)
20°8°1.8 mm⌄
Day≈17–23°
Night≈5–11°
Precip≈0.8 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 Little Cottonwood Creek Valley, 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.