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
90°
Tue, Sep 8
Coldest night
75°
Fri, Aug 28
Days with precip
4 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
87° 76°
81% precip chance
Sat 5 – Sun 6 Sep
90° 77°
76% precip chance
Sat 12 – Sun 13 Sep
88° 77°
typical range
Sat 19 – Sun 20 Sep
88° 76°
typical range
30 days — Harahan
14 forecast + 16 climatology
Fri · Today Mostly cloudy
85°75°0.8 mm⌄
Wind8 mph SW
Gusts16 mph
UV index7 – High
Precip chance57%
Sunrise06:35
Sunset19:28
Sat · Tomorrow Mostly cloudy
87°76°6.3 mm⌄
Wind8 mph NE
Gusts19 mph
UV index7 – High
Precip chance81%
Sunrise06:36
Sunset19:27
Sunday 30/8 Mostly cloudy
87°77°3.3 mm⌄
Wind10 mph NE
Gusts15 mph
UV index7 – High
Precip chance70%
Sunrise06:36
Sunset19:26
Monday 31/8 Sunny
89°78°4.4 mm⌄
Wind13 mph NE
Gusts22 mph
UV index8 – Very high
Precip chance65%
Sunrise06:37
Sunset19:24
Tuesday 1/9 Sunny
87°78°0.9 mm⌄
Wind9 mph NE
Gusts17 mph
UV index8 – Very high
Precip chance47%
Sunrise06:37
Sunset19:23
Wednesday 2/9 Sunny
89°80°0.3 mm⌄
Wind9 mph N
Gusts20 mph
UV index8 – Very high
Precip chance36%
Sunrise06:38
Sunset19:22
Thursday 3/9 Sunny
88°79°8%⌄
Wind10 mph NE
Gusts14 mph
UV index8 – Very high
Precip chance8%
Sunrise06:39
Sunset19:21
Friday 4/9 Sunny
88°78°0.7 mm⌄
Wind6 mph SW
Gusts14 mph
UV index8 – Very high
Precip chance38%
Sunrise06:39
Sunset19:20
Saturday 5/9 Showers
90°79°8.7 mm⌄
Wind9 mph NE
Gusts15 mph
UV index7 – High
Precip chance76%
Sunrise06:40
Sunset19:18
Sunday 6/9 Sunny
87°77°9%⌄
Wind10 mph S
Gusts18 mph
UV index8 – Very high
Precip chance9%
Sunrise06:40
Sunset19:17
Monday 7/9 Sunny
88°77°6%⌄
Wind10 mph SW
Gusts18 mph
UV index8 – Very high
Precip chance6%
Sunrise06:41
Sunset19:16
Tuesday 8/9 Sunny
90°77°6%⌄
Wind9 mph S
Gusts18 mph
UV index8 – Very high
Precip chance6%
Sunrise06:41
Sunset19:15
Wednesday 9/9 Sunny
89°77°7%⌄
Wind10 mph NE
Gusts17 mph
UV index8 – Very high
Precip chance7%
Sunrise06:42
Sunset19:14
Thursday 10/9 Sunny
87°77°8%⌄
Wind11 mph NE
Gusts18 mph
UV index8 – Very high
Precip chance8%
Sunrise06:42
Sunset19:12
Friday 11/9 Rain (climatological)
85°75°3.3 mm⌄
Day≈80–91°
Night≈70–81°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
88°77°20%⌄
Day≈83–93°
Night≈72–82°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
88°77°20%⌄
Day≈83–93°
Night≈72–82°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
89°77°4.4 mm⌄
Day≈83–94°
Night≈72–83°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
82°73°20%⌄
Day≈76–87°
Night≈68–78°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
80°72°20%⌄
Day≈74–85°
Night≈67–77°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
83°74°5.5 mm⌄
Day≈78–89°
Night≈69–80°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
82°73°20%⌄
Day≈77–87°
Night≈68–79°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
88°77°20%⌄
Day≈83–93°
Night≈72–82°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
87°76°4.0 mm⌄
Day≈81–92°
Night≈71–82°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
85°75°20%⌄
Day≈80–91°
Night≈70–81°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
85°75°20%⌄
Day≈80–91°
Night≈70–81°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
80°73°6.6 mm⌄
Day≈75–86°
Night≈67–78°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
80°72°20%⌄
Day≈75–85°
Night≈67–78°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
85°75°20%⌄
Day≈80–90°
Night≈70–81°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
86°76°4.2 mm⌄
Day≈81–91°
Night≈70–81°
Precip≈2.2 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.