Marlborough · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Marlborough & 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
83°
Wed, Sep 2
Coldest night
39°
Sun, Sep 6
Days with precip
2 / 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
62° 39°
28% precip chance
Sat 12 – Sun 13 Sep
69° 47°
11% precip chance
Sat 19 – Sun 20 Sep
54° 33°
typical range
Sat 26 – Sun 27 Sep
53° 34°
typical range
30 days — Marlborough
14 forecast + 16 climatology
Mon · Today Sunny
73°51°17%⌄
Wind13 mph W
Gusts29 mph
UV index5 – Moderate
Precip chance17%
Sunrise06:48
Sunset20:24
Tue · Tomorrow Mostly cloudy
80°49°6%⌄
Wind9 mph SE
Gusts20 mph
UV index5 – Moderate
Precip chance6%
Sunrise06:49
Sunset20:22
Wednesday 2/9 Mostly cloudy
83°59°0.6 mm⌄
Wind13 mph E
Gusts21 mph
UV index5 – Moderate
Precip chance37%
Sunrise06:51
Sunset20:20
Thursday 3/9 Showers
59°49°23.2 mm⌄
Wind15 mph SW
Gusts33 mph
UV index1 – Low
Precip chance88%
Sunrise06:52
Sunset20:17
Friday 4/9 Showers
55°44°8.2 mm⌄
Wind14 mph W
Gusts28 mph
UV index1 – Low
Precip chance84%
Sunrise06:54
Sunset20:15
Saturday 5/9 Mostly cloudy
51°42°28%⌄
Wind11 mph N
Gusts27 mph
UV index3 – Moderate
Precip chance28%
Sunrise06:55
Sunset20:13
Sunday 6/9 Mostly cloudy
62°39°9%⌄
Wind9 mph NW
Gusts21 mph
UV index5 – Moderate
Precip chance9%
Sunrise06:57
Sunset20:11
Monday 7/9 Mostly cloudy
69°44°7%⌄
Wind9 mph SE
Gusts14 mph
UV index5 – Moderate
Precip chance7%
Sunrise06:58
Sunset20:08
Tuesday 8/9 Sunny
77°50°3%⌄
Wind7 mph W
Gusts16 mph
UV index6 – High
Precip chance3%
Sunrise07:00
Sunset20:06
Wednesday 9/9 Sunny
59°46°0.9 mm⌄
Wind15 mph NW
Gusts30 mph
UV index4 – Moderate
Precip chance51%
Sunrise07:02
Sunset20:04
Thursday 10/9 Mostly cloudy
60°46°12%⌄
Wind16 mph NW
Gusts27 mph
UV index5 – Moderate
Precip chance12%
Sunrise07:03
Sunset20:02
Friday 11/9 Sunny
66°42°4%⌄
Wind9 mph W
Gusts18 mph
UV index5 – Moderate
Precip chance4%
Sunrise07:05
Sunset19:59
Saturday 12/9 Mostly cloudy
69°47°11%⌄
Wind8 mph W
Gusts18 mph
UV index5 – Moderate
Precip chance11%
Sunrise07:06
Sunset19:57
Sunday 13/9 Mostly cloudy
69°52°8%⌄
Wind14 mph SW
Gusts22 mph
UV index5 – Moderate
Precip chance8%
Sunrise07:08
Sunset19:55
Monday 14/9 Rain (climatological)
53°35°5.3 mm⌄
Day≈47–58°
Night≈30–41°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
58°38°20%⌄
Day≈53–63°
Night≈33–44°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
58°39°20%⌄
Day≈53–64°
Night≈33–44°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
59°39°6.2 mm⌄
Day≈53–64°
Night≈34–44°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
52°35°20%⌄
Day≈46–57°
Night≈29–40°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
49°33°20%⌄
Day≈44–54°
Night≈28–38°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
54°36°8.2 mm⌄
Day≈49–60°
Night≈31–42°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
56°37°20%⌄
Day≈51–61°
Night≈32–43°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
56°37°20%⌄
Day≈51–62°
Night≈32–43°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
60°40°4.1 mm⌄
Day≈55–65°
Night≈34–45°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
60°39°20%⌄
Day≈54–65°
Night≈34–45°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
53°35°20%⌄
Day≈47–58°
Night≈30–41°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
50°34°6.7 mm⌄
Day≈45–56°
Night≈28–39°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
53°35°20%⌄
Day≈47–58°
Night≈30–41°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
57°38°20%⌄
Day≈52–63°
Night≈33–44°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
58°39°7.7 mm⌄
Day≈53–64°
Night≈33–44°
Precip≈2.8 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 Marlborough, 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.