Dorchester · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Dorchester & 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
32°
Thu, Aug 27
Coldest night
16°
Mon, Aug 24
Days with precip
9 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
32° 21°
57% precip chance
Sat 5 – Sun 6 Sep
29° 21°
90% precip chance
Sat 12 – Sun 13 Sep
23° 16°
typical range
Sat 19 – Sun 20 Sep
23° 15°
typical range
30 days — Dorchester
14 forecast + 16 climatology
Mon · Today Sunny
30°16°2%⌄
Wind12 mph NW
Gusts19 mph
UV index7 – High
Precip chance2%
Sunrise06:28
Sunset19:50
Tue · Tomorrow Sunny
29°18°3%⌄
Wind9 mph NW
Gusts17 mph
UV index8 – High
Precip chance3%
Sunrise06:28
Sunset19:48
Wednesday 26/8 Mostly cloudy
29°20°8%⌄
Wind9 mph SE
Gusts21 mph
UV index8 – High
Precip chance8%
Sunrise06:29
Sunset19:47
Thursday 27/8 Sunny
32°20°7.3 mm⌄
Wind12 mph S
Gusts23 mph
UV index7 – High
Precip chance72%
Sunrise06:30
Sunset19:45
Friday 28/8 Mostly cloudy
32°20°0.2 mm⌄
Wind7 mph W
Gusts11 mph
UV index8 – Very high
Precip chance20%
Sunrise06:31
Sunset19:44
Saturday 29/8 Sunny
32°23°2.4 mm⌄
Wind8 mph SE
Gusts19 mph
UV index8 – Very high
Precip chance57%
Sunrise06:32
Sunset19:42
Sunday 30/8 Showers
31°21°1.0 mm⌄
Wind10 mph S
Gusts22 mph
UV index7 – High
Precip chance57%
Sunrise06:33
Sunset19:41
Monday 31/8 Showers
32°21°3.0 mm⌄
Wind6 mph SE
Gusts18 mph
UV index8 – Very high
Precip chance65%
Sunrise06:34
Sunset19:39
Tuesday 1/9 Showers
28°23°1.0 mm⌄
Wind9 mph NW
Gusts13 mph
UV index7 – High
Precip chance57%
Sunrise06:35
Sunset19:38
Wednesday 2/9 Showers
28°21°8.7 mm⌄
Wind9 mph S
Gusts29 mph
UV index6 – High
Precip chance82%
Sunrise06:36
Sunset19:36
Thursday 3/9 Showers
28°22°3.0 mm⌄
Wind10 mph NW
Gusts24 mph
UV index7 – High
Precip chance70%
Sunrise06:37
Sunset19:35
Friday 4/9 Sunny
30°20°6%⌄
Wind5 mph NW
Gusts11 mph
UV index8 – Very high
Precip chance6%
Sunrise06:38
Sunset19:33
Saturday 5/9 Mostly cloudy
27°22°6.4 mm⌄
Wind7 mph SE
Gusts23 mph
UV index6 – High
Precip chance79%
Sunrise06:39
Sunset19:31
Sunday 6/9 Showers
29°21°29.4 mm⌄
Wind7 mph S
Gusts23 mph
UV index6 – High
Precip chance90%
Sunrise06:39
Sunset19:30
Monday 7/9 Rain (climatological)
25°17°8.1 mm⌄
Day≈22–28°
Night≈14–20°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
27°18°20%⌄
Day≈24–30°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
28°18°20%⌄
Day≈25–31°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
26°17°13.5 mm⌄
Day≈23–29°
Night≈14–20°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
23°16°20%⌄
Day≈20–26°
Night≈13–19°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
23°16°10.4 mm⌄
Day≈20–26°
Night≈13–19°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
27°18°20%⌄
Day≈24–30°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
28°18°6.8 mm⌄
Day≈25–31°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
28°18°20%⌄
Day≈25–31°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
23°15°14.4 mm⌄
Day≈20–26°
Night≈12–18°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
23°15°20%⌄
Day≈20–26°
Night≈12–18°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
27°18°20%⌄
Day≈24–30°
Night≈15–21°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
29°19°6.8 mm⌄
Day≈26–32°
Night≈16–22°
Precip≈5.3 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 Dorchester, 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.