Downingtown · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Downingtown & 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
85°
Thu, Aug 27
Coldest night
57°
Mon, Aug 24
Days with precip
8 / 14
of 14 forecast days
Nicest day
Sat, Aug 29
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
79° 62°
82% precip chance
Sat 5 – Sun 6 Sep
77° 64°
95% precip chance
Sat 12 – Sun 13 Sep
70° 56°
typical range
Sat 19 – Sun 20 Sep
70° 55°
typical range
30 days — Downingtown
14 forecast + 16 climatology
Mon · Today Sunny
79°57°4%⌄
Wind11 mph W
Gusts19 mph
UV index7 – High
Precip chance4%
Sunrise06:23
Sunset19:47
Tue · Tomorrow Sunny
77°60°5%⌄
Wind13 mph NW
Gusts21 mph
UV index7 – High
Precip chance5%
Sunrise06:24
Sunset19:45
Wednesday 26/8 Mostly cloudy
81°62°10%⌄
Wind6 mph SW
Gusts13 mph
UV index8 – High
Precip chance10%
Sunrise06:25
Sunset19:44
Thursday 27/8 Mostly cloudy
85°65°4.6 mm⌄
Wind14 mph SE
Gusts27 mph
UV index7 – High
Precip chance70%
Sunrise06:26
Sunset19:42
Friday 28/8 Mostly cloudy
80°65°29%⌄
Wind8 mph W
Gusts15 mph
UV index6 – High
Precip chance29%
Sunrise06:26
Sunset19:41
Saturday 29/8 Mostly cloudy
78°62°8%⌄
Wind7 mph N
Gusts19 mph
UV index7 – High
Precip chance8%
Sunrise06:27
Sunset19:39
Sunday 30/8 Showers
79°65°16.2 mm⌄
Wind10 mph S
Gusts19 mph
UV index6 – High
Precip chance82%
Sunrise06:28
Sunset19:38
Monday 31/8 Showers
82°67°11.6 mm⌄
Wind8 mph W
Gusts15 mph
UV index7 – High
Precip chance85%
Sunrise06:29
Sunset19:36
Tuesday 1/9 Showers
78°67°5.8 mm⌄
Wind6 mph NE
Gusts13 mph
UV index6 – High
Precip chance82%
Sunrise06:30
Sunset19:34
Wednesday 2/9 Fog
77°65°17.5 mm⌄
Wind10 mph SE
Gusts26 mph
UV index6 – High
Precip chance90%
Sunrise06:31
Sunset19:33
Thursday 3/9 Showers
79°67°19.5 mm⌄
Wind11 mph NW
Gusts22 mph
UV index6 – High
Precip chance87%
Sunrise06:32
Sunset19:31
Friday 4/9 Sunny
79°63°9%⌄
Wind8 mph NW
Gusts17 mph
UV index7 – High
Precip chance9%
Sunrise06:33
Sunset19:30
Saturday 5/9 Mostly cloudy
77°64°2.1 mm⌄
Wind10 mph SE
Gusts24 mph
UV index5 – Moderate
Precip chance67%
Sunrise06:34
Sunset19:28
Sunday 6/9 Showers
74°66°60.1 mm⌄
Wind13 mph S
Gusts28 mph
UV index5 – Moderate
Precip chance95%
Sunrise06:35
Sunset19:26
Monday 7/9 Rain (climatological)
72°58°22.8 mm⌄
Day≈66–77°
Night≈52–63°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈72–82°
Night≈55–66°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
78°61°20%⌄
Day≈72–83°
Night≈56–67°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
72°58°29.8 mm⌄
Day≈67–78°
Night≈53–64°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
68°55°20%⌄
Day≈62–73°
Night≈50–61°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
70°56°20%⌄
Day≈64–75°
Night≈51–62°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
70°57°19.9 mm⌄
Day≈65–76°
Night≈51–62°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
74°59°20%⌄
Day≈69–80°
Night≈54–65°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈72–83°
Night≈56–66°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
79°62°23.8 mm⌄
Day≈73–84°
Night≈57–67°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
73°58°20%⌄
Day≈67–78°
Night≈53–64°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–74°
Night≈51–61°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
68°55°16.9 mm⌄
Day≈63–73°
Night≈50–61°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
70°56°20%⌄
Day≈64–75°
Night≈51–62°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
72°58°20%⌄
Day≈66–77°
Night≈52–63°
Precip≈11.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
76°60°37.7 mm⌄
Day≈70–81°
Night≈55–65°
Precip≈11.7 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 Downingtown, 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.