Lake Wynonah · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Lake Wynonah & 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
31°
Wed, Sep 9
Coldest night
8°
Wed, Sep 16
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sat, Sep 12
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
24° 13°
9% precip chance
Sat 12 – Sun 13 Sep
24° 10°
10% precip chance
Sat 19 – Sun 20 Sep
27° 14°
typical range
Sat 26 – Sun 27 Sep
27° 15°
typical range
30 days — Lake Wynonah
14 forecast + 16 climatology
Thu · Today Heavy rain
31°20°433.8 mm⌄
Wind15 mph NW
Gusts30 mph
UV index8 – High
Precip chance86%
Sunrise06:33
Sunset19:34
Fri · Tomorrow Showers
24°18°2.1 mm⌄
Wind10 mph NW
Gusts24 mph
UV index5 – Moderate
Precip chance72%
Sunrise06:34
Sunset19:32
Saturday 5/9 Sunny
22°14°8%⌄
Wind12 mph N
Gusts23 mph
UV index6 – High
Precip chance8%
Sunrise06:35
Sunset19:30
Sunday 6/9 Sunny
24°13°9%⌄
Wind5 mph N
Gusts15 mph
UV index6 – Moderate
Precip chance9%
Sunrise06:36
Sunset19:29
Monday 7/9 Sunny
25°11°0.6 mm⌄
Wind7 mph SW
Gusts13 mph
UV index6 – High
Precip chance37%
Sunrise06:37
Sunset19:27
Tuesday 8/9 Mostly cloudy
28°18°21%⌄
Wind5 mph W
Gusts12 mph
UV index6 – High
Precip chance21%
Sunrise06:38
Sunset19:25
Wednesday 9/9 Sunny
31°21°8%⌄
Wind11 mph W
Gusts32 mph
UV index8 – Very high
Precip chance8%
Sunrise06:39
Sunset19:24
Thursday 10/9 Sunny
27°15°4%⌄
Wind11 mph NW
Gusts32 mph
UV index6 – High
Precip chance4%
Sunrise06:40
Sunset19:22
Friday 11/9 Sunny
20°10°5%⌄
Wind11 mph N
Gusts26 mph
UV index5 – Moderate
Precip chance5%
Sunrise06:41
Sunset19:20
Saturday 12/9 Sunny
21°10°7%⌄
Wind5 mph S
Gusts17 mph
UV index6 – High
Precip chance7%
Sunrise06:42
Sunset19:19
Sunday 13/9 Sunny
24°12°10%⌄
Wind10 mph S
Gusts20 mph
UV index6 – High
Precip chance10%
Sunrise06:43
Sunset19:17
Monday 14/9 Fog
28°16°0.4 mm⌄
Wind7 mph SW
Gusts15 mph
UV index7 – High
Precip chance36%
Sunrise06:44
Sunset19:15
Tuesday 15/9 Sunny
25°15°6%⌄
Wind10 mph N
Gusts17 mph
UV index6 – High
Precip chance6%
Sunrise06:45
Sunset19:14
Wednesday 16/9 Sunny
19°8°3%⌄
Wind17 mph NW
Gusts31 mph
UV index5 – Moderate
Precip chance3%
Sunrise06:46
Sunset19:12
Thursday 17/9 Rain (climatological)
24°14°32.0 mm⌄
Day≈21–27°
Night≈11–17°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
27°15°20%⌄
Day≈24–30°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
27°15°20%⌄
Day≈24–30°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
25°14°22.0 mm⌄
Day≈22–28°
Night≈11–17°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
22°13°20%⌄
Day≈19–25°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
23°13°33.0 mm⌄
Day≈20–26°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
25°15°20%⌄
Day≈22–28°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
28°16°20%⌄
Day≈25–31°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
26°15°18.0 mm⌄
Day≈23–29°
Night≈12–18°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
27°16°20%⌄
Day≈24–30°
Night≈13–19°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
21°12°32.0 mm⌄
Day≈18–24°
Night≈9–15°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
19°9°20%⌄
Day≈16–22°
Night≈6–12°
Precip≈11.8 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Rain (climatological)
19°9°18.0 mm⌄
Day≈16–22°
Night≈6–12°
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 Lake Wynonah, 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.