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
76°
Mon, Sep 7
Coldest night
49°
Sun, Sep 13
Days with precip
9 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
72° 50°
12% precip chance
Sat 12 – Sun 13 Sep
63° 49°
93% precip chance
Sat 19 – Sun 20 Sep
52° 40°
typical range
Sat 26 – Sun 27 Sep
53° 39°
typical range
30 days — Marlborough
14 forecast + 16 climatology
Mon · Today Mostly cloudy
73°53°15%⌄
Wind6 mph W
Gusts17 mph
UV index5 – Moderate
Precip chance15%
Sunrise06:26
Sunset19:57
Tue · Tomorrow Sunny
71°54°0.8 mm⌄
Wind9 mph SE
Gusts12 mph
UV index5 – Moderate
Precip chance43%
Sunrise06:28
Sunset19:55
Wednesday 2/9 Showers
61°54°30.4 mm⌄
Wind10 mph SE
Gusts22 mph
UV index1 – Low
Precip chance91%
Sunrise06:29
Sunset19:53
Thursday 3/9 Showers
57°51°11.1 mm⌄
Wind6 mph SE
Gusts14 mph
UV index3 – Low
Precip chance92%
Sunrise06:31
Sunset19:51
Friday 4/9 Showers
59°51°5.0 mm⌄
Wind4 mph N
Gusts15 mph
UV index1 – Low
Precip chance87%
Sunrise06:32
Sunset19:49
Saturday 5/9 Mostly cloudy
68°50°12%⌄
Wind6 mph SW
Gusts15 mph
UV index5 – Moderate
Precip chance12%
Sunrise06:33
Sunset19:47
Sunday 6/9 Sunny
72°53°6%⌄
Wind6 mph W
Gusts17 mph
UV index6 – High
Precip chance6%
Sunrise06:35
Sunset19:44
Monday 7/9 Sunny
76°55°6%⌄
Wind5 mph SW
Gusts16 mph
UV index6 – High
Precip chance6%
Sunrise06:36
Sunset19:42
Tuesday 8/9 Mostly cloudy
69°53°1.9 mm⌄
Wind8 mph SE
Gusts17 mph
UV index6 – High
Precip chance58%
Sunrise06:38
Sunset19:40
Wednesday 9/9 Showers
63°53°1.4 mm⌄
Wind4 mph S
Gusts15 mph
UV index5 – Moderate
Precip chance61%
Sunrise06:39
Sunset19:38
Thursday 10/9 Showers
59°50°4.6 mm⌄
Wind7 mph SE
Gusts11 mph
UV index4 – Moderate
Precip chance81%
Sunrise06:41
Sunset19:36
Friday 11/9 Showers
60°51°8.5 mm⌄
Wind7 mph SE
Gusts10 mph
UV index4 – Moderate
Precip chance88%
Sunrise06:42
Sunset19:34
Saturday 12/9 Showers
58°51°16.9 mm⌄
Wind7 mph SE
Gusts12 mph
UV index3 – Moderate
Precip chance93%
Sunrise06:44
Sunset19:32
Sunday 13/9 Showers
63°49°9.8 mm⌄
Wind5 mph S
Gusts11 mph
UV index4 – Moderate
Precip chance87%
Sunrise06:45
Sunset19:29
Monday 14/9 Rain (climatological)
55°43°19.6 mm⌄
Day≈50–61°
Night≈38–49°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
60°46°20%⌄
Day≈55–65°
Night≈40–51°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
59°45°20%⌄
Day≈53–64°
Night≈40–51°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
58°44°24.8 mm⌄
Day≈52–63°
Night≈39–50°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
51°40°20%⌄
Day≈46–56°
Night≈35–46°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
52°41°20%⌄
Day≈46–57°
Night≈35–46°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
50°40°21.6 mm⌄
Day≈45–56°
Night≈35–45°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
53°42°20%⌄
Day≈48–59°
Night≈36–47°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
55°43°20%⌄
Day≈50–61°
Night≈38–48°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
61°47°18.9 mm⌄
Day≈56–67°
Night≈41–52°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
55°43°20%⌄
Day≈49–60°
Night≈37–48°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
52°41°20%⌄
Day≈46–57°
Night≈35–46°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
49°39°22.2 mm⌄
Day≈44–55°
Night≈34–45°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
53°42°20%⌄
Day≈48–58°
Night≈36–47°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
53°42°20%⌄
Day≈48–58°
Night≈36–47°
Precip≈7.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
56°43°14.4 mm⌄
Day≈50–61°
Night≈38–49°
Precip≈7.7 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 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.