Greentown · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Greentown & 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 2
Coldest night
13°
Sat, Aug 29
Days with precip
6 / 14
of 14 forecast days
Nicest day
Sat, Aug 29
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
28° 13°
14% precip chance
Sat 5 – Sun 6 Sep
27° 19°
78% precip chance
Sat 12 – Sun 13 Sep
26° 14°
typical range
Sat 19 – Sun 20 Sep
25° 16°
typical range
30 days — Greentown
14 forecast + 16 climatology
Sat · Today Sunny
25°13°6%⌄
Wind7 mph SE
Gusts12 mph
UV index8 – High
Precip chance6%
Sunrise06:49
Sunset20:03
Sun · Tomorrow Mostly cloudy
28°19°14%⌄
Wind10 mph SW
Gusts17 mph
UV index7 – High
Precip chance14%
Sunrise06:50
Sunset20:01
Monday 31/8 Mostly cloudy
28°21°0.4 mm⌄
Wind14 mph SW
Gusts25 mph
UV index6 – Moderate
Precip chance41%
Sunrise06:51
Sunset20:00
Tuesday 1/9 Mostly cloudy
29°23°20%⌄
Wind13 mph SW
Gusts36 mph
UV index8 – High
Precip chance20%
Sunrise06:52
Sunset19:58
Wednesday 2/9 Sunny
31°24°6%⌄
Wind16 mph SW
Gusts33 mph
UV index8 – Very high
Precip chance6%
Sunrise06:53
Sunset19:57
Thursday 3/9 Sunny
27°19°4.2 mm⌄
Wind11 mph SW
Gusts30 mph
UV index7 – High
Precip chance65%
Sunrise06:54
Sunset19:55
Friday 4/9 Sunny
26°22°4.8 mm⌄
Wind8 mph W
Gusts15 mph
UV index6 – High
Precip chance71%
Sunrise06:55
Sunset19:53
Saturday 5/9 Fog
27°21°2.9 mm⌄
Wind8 mph N
Gusts21 mph
UV index7 – High
Precip chance78%
Sunrise06:56
Sunset19:52
Sunday 6/9 Sunny
26°19°8%⌄
Wind7 mph NE
Gusts19 mph
UV index7 – High
Precip chance8%
Sunrise06:57
Sunset19:50
Monday 7/9 Mostly cloudy
25°16°8%⌄
Wind10 mph NE
Gusts23 mph
UV index6 – High
Precip chance8%
Sunrise06:58
Sunset19:48
Tuesday 8/9 Mostly cloudy
19°15°12%⌄
Wind10 mph NW
Gusts16 mph
UV index5 – Moderate
Precip chance12%
Sunrise06:59
Sunset19:47
Wednesday 9/9 Mostly cloudy
31°15°2.2 mm⌄
Wind7 mph W
Gusts17 mph
UV index7 – High
Precip chance70%
Sunrise07:00
Sunset19:45
Thursday 10/9 Sunny
31°19°1.5 mm⌄
Wind15 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance57%
Sunrise07:01
Sunset19:43
Friday 11/9 Showers
25°16°1.1 mm⌄
Wind8 mph N
Gusts14 mph
UV index4 – Moderate
Precip chance68%
Sunrise07:02
Sunset19:42
Saturday 12/9 Rain (climatological)
21°14°2.1 mm⌄
Day≈18–24°
Night≈11–17°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
26°17°20%⌄
Day≈23–29°
Night≈14–20°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
24°16°20%⌄
Day≈21–27°
Night≈13–19°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
24°16°3.1 mm⌄
Day≈21–27°
Night≈13–19°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
20°14°20%⌄
Day≈17–23°
Night≈11–17°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
19°13°20%⌄
Day≈16–22°
Night≈10–16°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
20°13°2.2 mm⌄
Day≈17–23°
Night≈10–16°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
24°16°20%⌄
Day≈21–27°
Night≈13–19°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
25°16°4.8 mm⌄
Day≈22–28°
Night≈13–19°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
22°15°20%⌄
Day≈19–25°
Night≈12–18°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
20°13°3.3 mm⌄
Day≈17–23°
Night≈10–16°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
20°13°20%⌄
Day≈17–23°
Night≈10–16°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
22°15°20%⌄
Day≈19–25°
Night≈12–18°
Precip≈1.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
26°17°2.6 mm⌄
Day≈23–29°
Night≈14–20°
Precip≈1.5 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 Greentown, 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.