Southport · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Southport & 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
94°
Sat, Sep 5
Coldest night
72°
Fri, Sep 11
Days with precip
8 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
87° 74°
88% precip chance
Sat 5 – Sun 6 Sep
94° 73°
84% precip chance
Sat 12 – Sun 13 Sep
87° 71°
typical range
Sat 19 – Sun 20 Sep
89° 71°
typical range
30 days — Southport
14 forecast + 16 climatology
Sat · Today Mostly cloudy
83°74°10.1 mm⌄
Wind7 mph SE
Gusts13 mph
UV index6 – Moderate
Precip chance88%
Sunrise06:43
Sunset19:42
Sun · Tomorrow Mostly cloudy
87°75°6.0 mm⌄
Wind9 mph SE
Gusts20 mph
UV index9 – Very high
Precip chance82%
Sunrise06:44
Sunset19:40
Monday 31/8 Mostly cloudy
87°77°2.3 mm⌄
Wind8 mph SE
Gusts19 mph
UV index8 – High
Precip chance72%
Sunrise06:45
Sunset19:39
Tuesday 1/9 Sunny
90°76°7%⌄
Wind9 mph S
Gusts20 mph
UV index9 – Very high
Precip chance7%
Sunrise06:45
Sunset19:38
Wednesday 2/9 Sunny
91°76°8%⌄
Wind11 mph SW
Gusts22 mph
UV index9 – Very high
Precip chance8%
Sunrise06:46
Sunset19:37
Thursday 3/9 Sunny
91°76°7%⌄
Wind11 mph SW
Gusts21 mph
UV index8 – Very high
Precip chance7%
Sunrise06:47
Sunset19:35
Friday 4/9 Sunny
93°77°1.2 mm⌄
Wind13 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance57%
Sunrise06:47
Sunset19:34
Saturday 5/9 Sunny
94°73°36.7 mm⌄
Wind13 mph SW
Gusts27 mph
UV index8 – Very high
Precip chance81%
Sunrise06:48
Sunset19:32
Sunday 6/9 Thunderstorms
92°74°25.3 mm⌄
Wind13 mph SW
Gusts23 mph
UV index7 – High
Precip chance84%
Sunrise06:49
Sunset19:31
Monday 7/9 Thunderstorms
91°78°0.6 mm⌄
Wind12 mph SW
Gusts28 mph
UV index8 – Very high
Precip chance39%
Sunrise06:49
Sunset19:30
Tuesday 8/9 Showers
91°80°0.6 mm⌄
Wind14 mph SW
Gusts28 mph
UV index8 – Very high
Precip chance42%
Sunrise06:50
Sunset19:28
Wednesday 9/9 Sunny
88°77°1.0 mm⌄
Wind15 mph SW
Gusts31 mph
UV index8 – Very high
Precip chance46%
Sunrise06:51
Sunset19:27
Thursday 10/9 Sunny
82°74°4.5 mm⌄
Wind13 mph SW
Gusts33 mph
UV index7 – High
Precip chance72%
Sunrise06:52
Sunset19:26
Friday 11/9 Mostly cloudy
88°72°4.3 mm⌄
Wind12 mph SW
Gusts27 mph
UV index8 – Very high
Precip chance70%
Sunrise06:52
Sunset19:24
Saturday 12/9 Rain (climatological)
83°71°21.4 mm⌄
Day≈78–89°
Night≈66–76°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
87°73°20%⌄
Day≈82–93°
Night≈68–79°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
87°73°20%⌄
Day≈81–92°
Night≈68–78°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
83°71°15.4 mm⌄
Day≈78–89°
Night≈66–76°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
81°70°20%⌄
Day≈76–87°
Night≈64–75°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
79°68°20%⌄
Day≈73–84°
Night≈63–74°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
80°69°18.1 mm⌄
Day≈75–86°
Night≈64–75°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
83°71°20%⌄
Day≈77–88°
Night≈65–76°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
89°74°20%⌄
Day≈83–94°
Night≈69–80°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
88°74°18.1 mm⌄
Day≈83–94°
Night≈69–79°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
88°74°20%⌄
Day≈82–93°
Night≈68–79°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
83°71°20%⌄
Day≈77–88°
Night≈65–76°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
81°70°25.5 mm⌄
Day≈76–86°
Night≈64–75°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
79°69°20%⌄
Day≈74–85°
Night≈63–74°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
85°72°20%⌄
Day≈80–90°
Night≈67–77°
Precip≈7.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
85°72°26.8 mm⌄
Day≈80–91°
Night≈67–78°
Precip≈7.9 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 Southport, 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.