Harahan · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Harahan & 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°
Fri, Sep 11
Coldest night
25°
Mon, Aug 31
Days with precip
3 / 14
of 14 forecast days
Nicest day
Sat, Sep 5
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
32° 25°
14% precip chance
Sat 12 – Sun 13 Sep
36° 27°
11% precip chance
Sat 19 – Sun 20 Sep
30° 23°
typical range
Sat 26 – Sun 27 Sep
29° 23°
typical range
30 days — Harahan
14 forecast + 16 climatology
Mon · Today Heavy rain
30°25°314.8 mm⌄
Wind16 mph E
Gusts19 mph
UV index10 – Very high
Precip chance86%
Sunrise06:37
Sunset19:24
Tue · Tomorrow Showers
31°26°1.0 mm⌄
Wind9 mph SE
Gusts20 mph
UV index10 – Very high
Precip chance54%
Sunrise06:37
Sunset19:23
Wednesday 2/9 Sunny
31°26°0.7 mm⌄
Wind9 mph N
Gusts18 mph
UV index10 – Very high
Precip chance43%
Sunrise06:38
Sunset19:22
Thursday 3/9 Sunny
31°26°0.5 mm⌄
Wind9 mph NE
Gusts19 mph
UV index10 – Very high
Precip chance36%
Sunrise06:39
Sunset19:21
Friday 4/9 Sunny
31°25°2.9 mm⌄
Wind10 mph NE
Gusts21 mph
UV index10 – Very high
Precip chance63%
Sunrise06:39
Sunset19:20
Saturday 5/9 Sunny
31°25°9%⌄
Wind9 mph SW
Gusts19 mph
UV index8 – Very high
Precip chance9%
Sunrise06:40
Sunset19:18
Sunday 6/9 Partly cloudy
32°25°14%⌄
Wind8 mph SW
Gusts18 mph
UV index8 – Very high
Precip chance14%
Sunrise06:40
Sunset19:17
Monday 7/9 Mostly cloudy
34°25°1.2 mm⌄
Wind9 mph NW
Gusts13 mph
UV index8 – Very high
Precip chance57%
Sunrise06:41
Sunset19:16
Tuesday 8/9 Partly cloudy
34°26°0.9 mm⌄
Wind16 mph SW
Gusts26 mph
UV index8 – Very high
Precip chance49%
Sunrise06:41
Sunset19:15
Wednesday 9/9 Sunny
34°25°11%⌄
Wind10 mph SW
Gusts19 mph
UV index8 – Very high
Precip chance11%
Sunrise06:42
Sunset19:14
Thursday 10/9 Sunny
35°26°7%⌄
Wind12 mph SW
Gusts23 mph
UV index8 – Very high
Precip chance7%
Sunrise06:42
Sunset19:12
Friday 11/9 Sunny
36°27°0.9 mm⌄
Wind12 mph NW
Gusts23 mph
UV index9 – Very high
Precip chance43%
Sunrise06:43
Sunset19:11
Saturday 12/9 Sunny
36°27°6%⌄
Wind9 mph SE
Gusts16 mph
UV index9 – Very high
Precip chance6%
Sunrise06:43
Sunset19:10
Sunday 13/9 Mostly cloudy
33°27°11%⌄
Wind12 mph SE
Gusts19 mph
UV index8 – Very high
Precip chance11%
Sunrise06:44
Sunset19:09
Monday 14/9 Rain (climatological)
31°25°18.0 mm⌄
Day≈28–34°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
33°26°20%⌄
Day≈30–36°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
33°26°20%⌄
Day≈30–36°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
33°26°24.0 mm⌄
Day≈30–36°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
29°23°20%⌄
Day≈26–32°
Night≈20–26°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
28°23°20%⌄
Day≈25–31°
Night≈20–26°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
30°24°30.0 mm⌄
Day≈27–33°
Night≈21–27°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
30°24°20%⌄
Day≈27–33°
Night≈21–27°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
33°26°20%⌄
Day≈30–36°
Night≈23–29°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
32°25°22.0 mm⌄
Day≈29–35°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
31°25°20%⌄
Day≈28–34°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
31°25°20%⌄
Day≈28–34°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
29°23°36.0 mm⌄
Day≈26–32°
Night≈20–26°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
28°23°20%⌄
Day≈25–31°
Night≈20–26°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
31°25°20%⌄
Day≈28–34°
Night≈22–28°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
32°25°23.0 mm⌄
Day≈29–35°
Night≈22–28°
Precip≈11.8 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 Harahan, 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.