Harrington · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Harrington & 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
36°
Thu, Sep 3
Coldest night
17°
Mon, Sep 7
Days with precip
4 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
31° 19°
12% precip chance
Sat 5 – Sun 6 Sep
28° 18°
5% precip chance
Sat 12 – Sun 13 Sep
29° 18°
typical range
Sat 19 – Sun 20 Sep
30° 19°
typical range
30 days — Harrington
14 forecast + 16 climatology
Fri · Today Showers
30°22°1.2 mm⌄
Wind6 mph N
Gusts14 mph
UV index7 – High
Precip chance64%
Sunrise06:27
Sunset19:39
Sat · Tomorrow Mostly cloudy
25°19°12%⌄
Wind9 mph NE
Gusts18 mph
UV index6 – High
Precip chance12%
Sunrise06:28
Sunset19:37
Sunday 30/8 Sunny
31°19°11%⌄
Wind9 mph S
Gusts23 mph
UV index8 – Very high
Precip chance11%
Sunrise06:29
Sunset19:36
Monday 31/8 Mostly cloudy
34°22°1.2 mm⌄
Wind10 mph NE
Gusts22 mph
UV index8 – Very high
Precip chance60%
Sunrise06:30
Sunset19:34
Tuesday 1/9 Showers
30°22°1.5 mm⌄
Wind10 mph NW
Gusts20 mph
UV index6 – High
Precip chance67%
Sunrise06:31
Sunset19:33
Wednesday 2/9 Sunny
33°22°0.9 mm⌄
Wind11 mph S
Gusts26 mph
UV index8 – Very high
Precip chance56%
Sunrise06:32
Sunset19:31
Thursday 3/9 Sunny
36°24°6%⌄
Wind13 mph W
Gusts26 mph
UV index9 – Very high
Precip chance6%
Sunrise06:33
Sunset19:30
Friday 4/9 Sunny
31°24°8%⌄
Wind14 mph NW
Gusts18 mph
UV index8 – Very high
Precip chance8%
Sunrise06:34
Sunset19:28
Saturday 5/9 Sunny
28°19°4%⌄
Wind10 mph N
Gusts16 mph
UV index7 – High
Precip chance4%
Sunrise06:34
Sunset19:27
Sunday 6/9 Sunny
27°18°5%⌄
Wind9 mph NE
Gusts13 mph
UV index7 – High
Precip chance5%
Sunrise06:35
Sunset19:25
Monday 7/9 Mostly cloudy
25°17°1.2 mm⌄
Wind8 mph E
Gusts17 mph
UV index6 – High
Precip chance64%
Sunrise06:36
Sunset19:23
Tuesday 8/9 Mostly cloudy
27°19°0.3 mm⌄
Wind7 mph NW
Gusts11 mph
UV index7 – High
Precip chance36%
Sunrise06:37
Sunset19:22
Wednesday 9/9 Mostly cloudy
32°20°16%⌄
Wind10 mph SW
Gusts24 mph
UV index7 – High
Precip chance16%
Sunrise06:38
Sunset19:20
Thursday 10/9 Sunny
34°24°7%⌄
Wind11 mph SW
Gusts23 mph
UV index8 – Very high
Precip chance7%
Sunrise06:39
Sunset19:19
Friday 11/9 Light rain (climatological)
26°17°1.2 mm⌄
Day≈23–29°
Night≈14–20°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
28°18°20%⌄
Day≈25–31°
Night≈15–21°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
26°17°1.6 mm⌄
Day≈23–29°
Night≈14–20°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
25°16°20%⌄
Day≈22–28°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
24°16°20%⌄
Day≈21–27°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
23°16°1.5 mm⌄
Day≈20–26°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
26°17°20%⌄
Day≈23–29°
Night≈14–20°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
30°20°1.5 mm⌄
Day≈27–33°
Night≈17–23°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
27°18°20%⌄
Day≈24–30°
Night≈15–21°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
24°16°20%⌄
Day≈21–27°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
25°17°1.3 mm⌄
Day≈22–28°
Night≈14–20°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
23°16°20%⌄
Day≈20–26°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
26°17°20%⌄
Day≈23–29°
Night≈14–20°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
29°19°1.9 mm⌄
Day≈26–32°
Night≈16–22°
Precip≈0.6 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 Harrington, 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.