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
83°
Thu, Sep 17
Coldest night
46°
Sun, Sep 13
Days with precip
3 / 14
of 14 forecast days
Nicest day
Sun, Sep 13
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
74° 53°
67% precip chance
Sat 12 – Sun 13 Sep
68° 46°
6% precip chance
Sat 19 – Sun 20 Sep
76° 53°
typical range
Sat 26 – Sun 27 Sep
78° 54°
typical range
30 days — Holliston
14 forecast + 16 climatology
Sat · Today Sunny
74°58°2.2 mm⌄
Wind8 mph N
Gusts23 mph
UV index3 – Moderate
Precip chance67%
Sunrise06:15
Sunset19:13
Sun · Tomorrow Mostly cloudy
72°53°15%⌄
Wind9 mph N
Gusts20 mph
UV index5 – Moderate
Precip chance15%
Sunrise06:16
Sunset19:11
Monday 7/9 Sunny
77°52°3%⌄
Wind8 mph N
Gusts19 mph
UV index6 – Moderate
Precip chance3%
Sunrise06:17
Sunset19:09
Tuesday 8/9 Mostly cloudy
77°59°15%⌄
Wind8 mph NW
Gusts18 mph
UV index6 – High
Precip chance15%
Sunrise06:18
Sunset19:08
Wednesday 9/9 Mostly cloudy
73°57°0.5 mm⌄
Wind12 mph SW
Gusts37 mph
UV index5 – Moderate
Precip chance54%
Sunrise06:19
Sunset19:06
Thursday 10/9 Sunny
76°56°2.2 mm⌄
Wind15 mph W
Gusts34 mph
UV index6 – High
Precip chance57%
Sunrise06:20
Sunset19:04
Friday 11/9 Sunny
67°48°4%⌄
Wind13 mph NW
Gusts26 mph
UV index5 – Moderate
Precip chance4%
Sunrise06:21
Sunset19:03
Saturday 12/9 Sunny
67°52°6%⌄
Wind11 mph N
Gusts26 mph
UV index5 – Moderate
Precip chance6%
Sunrise06:22
Sunset19:01
Sunday 13/9 Sunny
68°46°5%⌄
Wind7 mph NE
Gusts13 mph
UV index6 – High
Precip chance5%
Sunrise06:23
Sunset18:59
Monday 14/9 Sunny
75°49°8%⌄
Wind6 mph S
Gusts21 mph
UV index6 – High
Precip chance8%
Sunrise06:24
Sunset18:57
Tuesday 15/9 Sunny
81°54°6%⌄
Wind6 mph SW
Gusts21 mph
UV index7 – High
Precip chance6%
Sunrise06:25
Sunset18:56
Wednesday 16/9 Mostly cloudy
80°58°18%⌄
Wind8 mph E
Gusts13 mph
UV index6 – High
Precip chance18%
Sunrise06:26
Sunset18:54
Thursday 17/9 Partly cloudy
83°61°24%⌄
Wind7 mph NE
Gusts18 mph
UV index6 – High
Precip chance24%
Sunrise06:27
Sunset18:52
Friday 18/9 Showers
63°51°14.7 mm⌄
Wind11 mph NE
Gusts23 mph
UV index4 – Moderate
Precip chance92%
Sunrise06:29
Sunset18:50
Saturday 19/9 Rain (climatological)
73°53°3.0 mm⌄
Day≈67–78°
Night≈48–59°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
76°55°20%⌄
Day≈70–81°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
76°55°20%⌄
Day≈71–81°
Night≈50–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
75°54°5.3 mm⌄
Day≈69–80°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
73°53°20%⌄
Day≈67–78°
Night≈48–59°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
72°53°20%⌄
Day≈66–77°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
72°53°4.3 mm⌄
Day≈67–78°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
75°54°20%⌄
Day≈69–80°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
78°56°20%⌄
Day≈73–83°
Night≈51–62°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
80°58°2.3 mm⌄
Day≈75–86°
Night≈52–63°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
77°56°20%⌄
Day≈71–82°
Night≈50–61°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
74°54°20%⌄
Day≈68–79°
Night≈48–59°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
54°38°3.3 mm⌄
Day≈49–60°
Night≈32–43°
Precip≈1.7 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Partly cloudy (climatological)
58°40°20%⌄
Day≈53–64°
Night≈35–46°
Precip≈1.7 in / October
(climatological)Typical range for these dates · 1991–2020
Saturday 3/10 Partly cloudy (climatological)
61°42°20%⌄
Day≈56–66°
Night≈37–47°
Precip≈1.7 in / October
(climatological)Typical range for these dates · 1991–2020
Sunday 4/10 Rain (climatological)
64°44°3.6 mm⌄
Day≈59–70°
Night≈38–49°
Precip≈1.7 in / October
(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.