West Chester · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
West Chester & 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
88°
Thu, Sep 3
Coldest night
58°
Sat, Sep 12
Days with precip
6 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
79° 60°
36% precip chance
Sat 12 – Sun 13 Sep
79° 58°
9% precip chance
Sat 19 – Sun 20 Sep
80° 65°
typical range
Sat 26 – Sun 27 Sep
83° 65°
typical range
30 days — West Chester
14 forecast + 16 climatology
Wed · Today Showers
75°70°2.8 mm⌄
Wind7 mph E
Gusts16 mph
UV index4 – Moderate
Precip chance84%
Sunrise06:31
Sunset19:32
Thu · Tomorrow Showers
88°69°8.3 mm⌄
Wind10 mph W
Gusts18 mph
UV index8 – High
Precip chance85%
Sunrise06:32
Sunset19:31
Friday 4/9 Mostly cloudy
83°72°2.1 mm⌄
Wind12 mph NW
Gusts17 mph
UV index7 – High
Precip chance69%
Sunrise06:33
Sunset19:29
Saturday 5/9 Sunny
79°67°7%⌄
Wind9 mph N
Gusts23 mph
UV index6 – High
Precip chance7%
Sunrise06:34
Sunset19:28
Sunday 6/9 Sunny
73°60°0.4 mm⌄
Wind11 mph NE
Gusts22 mph
UV index6 – High
Precip chance36%
Sunrise06:35
Sunset19:26
Monday 7/9 Sunny
76°60°4%⌄
Wind5 mph N
Gusts12 mph
UV index6 – High
Precip chance4%
Sunrise06:36
Sunset19:24
Tuesday 8/9 Mostly cloudy
79°63°15%⌄
Wind12 mph SW
Gusts31 mph
UV index6 – High
Precip chance15%
Sunrise06:36
Sunset19:23
Wednesday 9/9 Showers
82°70°2.6 mm⌄
Wind9 mph W
Gusts28 mph
UV index6 – High
Precip chance79%
Sunrise06:37
Sunset19:21
Thursday 10/9 Mostly cloudy
86°71°1.6 mm⌄
Wind13 mph W
Gusts31 mph
UV index7 – High
Precip chance70%
Sunrise06:38
Sunset19:20
Friday 11/9 Sunny
76°62°5%⌄
Wind12 mph NW
Gusts26 mph
UV index6 – High
Precip chance5%
Sunrise06:39
Sunset19:18
Saturday 12/9 Mostly cloudy
75°58°9%⌄
Wind7 mph N
Gusts19 mph
UV index6 – High
Precip chance9%
Sunrise06:40
Sunset19:16
Sunday 13/9 Sunny
79°63°6%⌄
Wind8 mph S
Gusts22 mph
UV index7 – High
Precip chance6%
Sunrise06:41
Sunset19:15
Monday 14/9 Sunny
85°66°0.2 mm⌄
Wind8 mph S
Gusts21 mph
UV index7 – High
Precip chance21%
Sunrise06:42
Sunset19:13
Tuesday 15/9 Showers
87°70°9.0 mm⌄
Wind6 mph W
Gusts19 mph
UV index7 – High
Precip chance82%
Sunrise06:43
Sunset19:11
Wednesday 16/9 Rain (climatological)
83°67°7.7 mm⌄
Day≈77–88°
Night≈62–73°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
86°69°20%⌄
Day≈81–91°
Night≈64–74°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
84°68°20%⌄
Day≈79–90°
Night≈63–73°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
80°65°7.1 mm⌄
Day≈75–85°
Night≈60–71°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
79°65°20%⌄
Day≈73–84°
Night≈59–70°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
78°65°20%⌄
Day≈73–84°
Night≈59–70°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
74°62°3.1 mm⌄
Day≈69–80°
Night≈57–67°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
78°64°20%⌄
Day≈73–83°
Night≈59–70°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
86°69°20%⌄
Day≈80–91°
Night≈64–74°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
85°69°7.7 mm⌄
Day≈80–91°
Night≈64–74°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
83°67°20%⌄
Day≈78–89°
Night≈62–73°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
79°65°20%⌄
Day≈73–84°
Night≈59–70°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
74°62°4.7 mm⌄
Day≈69–80°
Night≈57–68°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
75°62°20%⌄
Day≈69–80°
Night≈57–68°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
81°66°20%⌄
Day≈76–87°
Night≈61–72°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
73°58°4.3 mm⌄
Day≈68–79°
Night≈53–63°
Precip≈2.3 in / October
(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 West Chester, 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.