Summerville · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Summerville & 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
97°
Wed, Sep 2
Coldest night
62°
Sun, Sep 13
Days with precip
5 / 14
of 14 forecast days
Nicest day
Mon, Sep 14
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
95° 65°
92% precip chance
Sat 12 – Sun 13 Sep
86° 62°
57% precip chance
Sat 19 – Sun 20 Sep
90° 66°
typical range
Sat 26 – Sun 27 Sep
86° 66°
typical range
30 days — Summerville
14 forecast + 16 climatology
Tue · Today Sunny
96°74°3%⌄
Wind5 mph NE
Gusts14 mph
UV index9 – Very high
Precip chance3%
Sunrise07:14
Sunset20:08
Wed · Tomorrow Sunny
97°74°3%⌄
Wind4 mph S
Gusts10 mph
UV index9 – Very high
Precip chance3%
Sunrise07:15
Sunset20:06
Thursday 3/9 Sunny
96°75°2.7 mm⌄
Wind9 mph E
Gusts20 mph
UV index9 – Very high
Precip chance57%
Sunrise07:16
Sunset20:05
Friday 4/9 Sunny
95°72°0.9 mm⌄
Wind8 mph S
Gusts21 mph
UV index8 – Very high
Precip chance42%
Sunrise07:16
Sunset20:04
Saturday 5/9 Fog
95°73°8.1 mm⌄
Wind12 mph N
Gusts25 mph
UV index9 – Very high
Precip chance75%
Sunrise07:17
Sunset20:02
Sunday 6/9 Showers
74°65°12.4 mm⌄
Wind11 mph SE
Gusts28 mph
UV index5 – Moderate
Precip chance92%
Sunrise07:18
Sunset20:01
Monday 7/9 Mostly cloudy
70°64°0.8 mm⌄
Wind11 mph SE
Gusts27 mph
UV index5 – Moderate
Precip chance60%
Sunrise07:18
Sunset19:59
Tuesday 8/9 Mostly cloudy
87°66°13%⌄
Wind5 mph SW
Gusts13 mph
UV index8 – Very high
Precip chance13%
Sunrise07:19
Sunset19:58
Wednesday 9/9 Sunny
93°71°5%⌄
Wind6 mph W
Gusts11 mph
UV index8 – Very high
Precip chance5%
Sunrise07:20
Sunset19:57
Thursday 10/9 Sunny
97°75°4%⌄
Wind6 mph NW
Gusts17 mph
UV index9 – Very high
Precip chance4%
Sunrise07:21
Sunset19:55
Friday 11/9 Sunny
96°75°5%⌄
Wind9 mph N
Gusts23 mph
UV index9 – Very high
Precip chance5%
Sunrise07:21
Sunset19:54
Saturday 12/9 Sunny
85°67°1.2 mm⌄
Wind14 mph N
Gusts35 mph
UV index7 – High
Precip chance57%
Sunrise07:22
Sunset19:52
Sunday 13/9 Sunny
86°62°1%⌄
Wind11 mph NE
Gusts29 mph
UV index8 – Very high
Precip chance1%
Sunrise07:23
Sunset19:51
Monday 14/9 Sunny
85°65°6%⌄
Wind5 mph SE
Gusts17 mph
UV index7 – High
Precip chance6%
Sunrise07:23
Sunset19:50
Tuesday 15/9 Rain (climatological)
89°69°4.0 mm⌄
Day≈83–94°
Night≈64–75°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
91°70°20%⌄
Day≈85–96°
Night≈65–76°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
92°71°20%⌄
Day≈86–97°
Night≈66–76°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
90°70°3.0 mm⌄
Day≈85–95°
Night≈65–75°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
90°70°20%⌄
Day≈84–95°
Night≈65–75°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
83°66°20%⌄
Day≈77–88°
Night≈60–71°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
83°66°5.5 mm⌄
Day≈78–89°
Night≈61–72°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
89°70°20%⌄
Day≈84–95°
Night≈64–75°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
96°73°20%⌄
Day≈90–101°
Night≈68–79°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
92°72°6.1 mm⌄
Day≈87–98°
Night≈66–77°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
92°71°20%⌄
Day≈86–97°
Night≈66–76°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
86°67°20%⌄
Day≈80–91°
Night≈62–73°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
83°66°5.7 mm⌄
Day≈78–88°
Night≈60–71°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
84°67°20%⌄
Day≈79–90°
Night≈61–72°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
87°69°20%⌄
Day≈82–93°
Night≈63–74°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
94°72°5.3 mm⌄
Day≈88–99°
Night≈67–78°
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 Summerville, 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.