Holliston · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Holliston & 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
87°
Fri, Aug 28
Coldest night
45°
Mon, Sep 7
Days with precip
7 / 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
83° 58°
11% precip chance
Sat 5 – Sun 6 Sep
67° 49°
70% precip chance
Sat 12 – Sun 13 Sep
64° 48°
typical range
Sat 19 – Sun 20 Sep
65° 46°
typical range
30 days — Holliston
14 forecast + 16 climatology
Tue · Today Sunny
77°59°7%⌄
Wind11 mph W
Gusts19 mph
UV index7 – High
Precip chance7%
Sunrise06:03
Sunset19:31
Wed · Tomorrow Sunny
82°56°6%⌄
Wind7 mph W
Gusts20 mph
UV index7 – High
Precip chance6%
Sunrise06:04
Sunset19:30
Thursday 27/8 Mostly cloudy
85°61°14%⌄
Wind13 mph SW
Gusts23 mph
UV index7 – High
Precip chance14%
Sunrise06:05
Sunset19:28
Friday 28/8 Fog
87°65°1.5 mm⌄
Wind8 mph W
Gusts22 mph
UV index7 – High
Precip chance64%
Sunrise06:07
Sunset19:26
Saturday 29/8 Mostly cloudy
81°59°8%⌄
Wind8 mph N
Gusts23 mph
UV index7 – High
Precip chance8%
Sunrise06:08
Sunset19:25
Sunday 30/8 Mostly cloudy
83°58°11%⌄
Wind10 mph SW
Gusts26 mph
UV index7 – High
Precip chance11%
Sunrise06:09
Sunset19:23
Monday 31/8 Mostly cloudy
80°63°18%⌄
Wind6 mph N
Gusts17 mph
UV index7 – High
Precip chance18%
Sunrise06:10
Sunset19:21
Tuesday 1/9 Fog
74°58°11.7 mm⌄
Wind8 mph N
Gusts16 mph
UV index5 – Moderate
Precip chance92%
Sunrise06:11
Sunset19:20
Wednesday 2/9 Fog
67°55°25.6 mm⌄
Wind7 mph SE
Gusts16 mph
UV index5 – Moderate
Precip chance91%
Sunrise06:12
Sunset19:18
Thursday 3/9 Showers
59°55°5.1 mm⌄
Wind7 mph NE
Gusts19 mph
UV index4 – Moderate
Precip chance92%
Sunrise06:13
Sunset19:16
Friday 4/9 Showers
64°56°4.4 mm⌄
Wind8 mph N
Gusts21 mph
UV index4 – Moderate
Precip chance88%
Sunrise06:14
Sunset19:15
Saturday 5/9 Fog
67°53°2.2 mm⌄
Wind6 mph N
Gusts21 mph
UV index4 – Moderate
Precip chance70%
Sunrise06:15
Sunset19:13
Sunday 6/9 Mostly cloudy
64°49°1.5 mm⌄
Wind8 mph N
Gusts15 mph
UV index5 – Moderate
Precip chance62%
Sunrise06:16
Sunset19:11
Monday 7/9 Showers
56°45°0.5 mm⌄
Wind5 mph E
Gusts14 mph
UV index3 – Moderate
Precip chance47%
Sunrise06:17
Sunset19:09
Tuesday 8/9 Rain (climatological)
64°49°8.0 mm⌄
Day≈59–70°
Night≈44–54°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
67°51°20%⌄
Day≈62–73°
Night≈45–56°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
67°51°20%⌄
Day≈62–73°
Night≈45–56°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
66°50°14.1 mm⌄
Day≈61–72°
Night≈45–55°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
64°49°20%⌄
Day≈59–70°
Night≈44–54°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
63°48°20%⌄
Day≈58–69°
Night≈43–54°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
64°49°11.4 mm⌄
Day≈58–69°
Night≈43–54°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
66°50°20%⌄
Day≈61–72°
Night≈45–55°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
69°52°20%⌄
Day≈64–75°
Night≈47–57°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
72°53°6.1 mm⌄
Day≈66–77°
Night≈48–59°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
68°51°20%⌄
Day≈63–74°
Night≈46–57°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
65°49°20%⌄
Day≈60–71°
Night≈44–55°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
59°46°8.7 mm⌄
Day≈53–64°
Night≈40–51°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
63°48°20%⌄
Day≈58–68°
Night≈43–53°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
65°50°20%⌄
Day≈60–71°
Night≈44–55°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
69°52°9.5 mm⌄
Day≈64–74°
Night≈46–57°
Precip≈4.5 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 Holliston, 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.