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
86°
Thu, Sep 3
Coldest night
54°
Sun, Sep 6
Days with precip
9 / 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
84° 61°
14% precip chance
Sat 5 – Sun 6 Sep
74° 54°
61% precip chance
Sat 12 – Sun 13 Sep
75° 57°
typical range
Sat 19 – Sun 20 Sep
74° 57°
typical range
30 days — Southport
14 forecast + 16 climatology
Thu · Today Mostly cloudy
85°69°1.7 mm⌄
Wind12 mph S
Gusts20 mph
UV index7 – High
Precip chance66%
Sunrise06:14
Sunset19:34
Fri · Tomorrow Showers
84°68°1.7 mm⌄
Wind9 mph N
Gusts24 mph
UV index6 – High
Precip chance63%
Sunrise06:15
Sunset19:32
Saturday 29/8 Mostly cloudy
78°61°14%⌄
Wind6 mph N
Gusts23 mph
UV index6 – High
Precip chance14%
Sunrise06:16
Sunset19:31
Sunday 30/8 Sunny
84°62°7%⌄
Wind11 mph SW
Gusts20 mph
UV index7 – High
Precip chance7%
Sunrise06:17
Sunset19:29
Monday 31/8 Mostly cloudy
84°65°1.1 mm⌄
Wind7 mph W
Gusts23 mph
UV index6 – High
Precip chance62%
Sunrise06:18
Sunset19:28
Tuesday 1/9 Showers
75°65°7.5 mm⌄
Wind9 mph E
Gusts20 mph
UV index5 – Moderate
Precip chance90%
Sunrise06:19
Sunset19:26
Wednesday 2/9 Fog
69°63°5.7 mm⌄
Wind7 mph E
Gusts19 mph
UV index4 – Moderate
Precip chance93%
Sunrise06:20
Sunset19:24
Thursday 3/9 Showers
86°65°5.5 mm⌄
Wind9 mph NW
Gusts19 mph
UV index7 – High
Precip chance85%
Sunrise06:21
Sunset19:23
Friday 4/9 Mostly cloudy
65°64°36.4 mm⌄
Wind7 mph E
Gusts16 mph
UV index4 – Moderate
Precip chance93%
Sunrise06:22
Sunset19:21
Saturday 5/9 Sunny
74°60°2.8 mm⌄
Wind9 mph NE
Gusts23 mph
UV index6 – High
Precip chance61%
Sunrise06:23
Sunset19:19
Sunday 6/9 Sunny
72°54°5%⌄
Wind10 mph SE
Gusts12 mph
UV index6 – High
Precip chance5%
Sunrise06:24
Sunset19:18
Monday 7/9 Partly cloudy
72°55°18%⌄
Wind7 mph SE
Gusts14 mph
UV index6 – High
Precip chance18%
Sunrise06:25
Sunset19:16
Tuesday 8/9 Mostly cloudy
80°65°1.0 mm⌄
Wind9 mph W
Gusts15 mph
UV index6 – High
Precip chance55%
Sunrise06:26
Sunset19:14
Wednesday 9/9 Showers
67°60°38.3 mm⌄
Wind12 mph W
Gusts26 mph
UV index4 – Moderate
Precip chance92%
Sunrise06:27
Sunset19:13
Thursday 10/9 Rain (climatological)
69°56°20.5 mm⌄
Day≈63–74°
Night≈50–61°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
72°57°20%⌄
Day≈66–77°
Night≈52–63°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
75°59°20%⌄
Day≈69–80°
Night≈54–65°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
72°57°24.2 mm⌄
Day≈66–77°
Night≈52–63°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
67°55°20%⌄
Day≈61–72°
Night≈49–60°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
63°52°20%⌄
Day≈58–68°
Night≈47–58°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
64°53°18.3 mm⌄
Day≈58–69°
Night≈47–58°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
70°56°20%⌄
Day≈64–75°
Night≈51–62°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
74°58°20%⌄
Day≈68–79°
Night≈53–64°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
74°59°27.1 mm⌄
Day≈69–80°
Night≈54–64°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
70°57°20%⌄
Day≈65–76°
Night≈51–62°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
66°54°20%⌄
Day≈61–72°
Night≈49–60°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
63°52°22.7 mm⌄
Day≈58–69°
Night≈47–58°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
65°54°20%⌄
Day≈60–71°
Night≈48–59°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
68°55°20%⌄
Day≈62–73°
Night≈50–60°
Precip≈8.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
75°59°16.1 mm⌄
Day≈69–80°
Night≈54–65°
Precip≈8.7 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.