Cold Spring Harbor · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Cold Spring Harbor & 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°
Sat, Aug 29
Coldest night
67°
Sun, Aug 23
Days with precip
2 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
87° 70°
38% precip chance
Sat 5 – Sun 6 Sep
83° 64°
typical range
Sat 12 – Sun 13 Sep
73° 62°
typical range
Sat 19 – Sun 20 Sep
77° 62°
typical range
30 days — Cold Spring Harbor
14 forecast + 16 climatology
Sun · Today Sunny
85°67°7.8 mm⌄
Wind15 mph W
Gusts21 mph
UV index8 – High
Precip chance73%
Sunrise06:11
Sunset19:41
Mon · Tomorrow Sunny
82°71°1%⌄
Wind15 mph SW
Gusts24 mph
UV index7 – High
Precip chance1%
Sunrise06:12
Sunset19:39
Tuesday 25/8 Sunny
82°69°2%⌄
Wind16 mph NW
Gusts24 mph
UV index7 – High
Precip chance2%
Sunrise06:13
Sunset19:37
Wednesday 26/8 Mostly cloudy
83°70°5%⌄
Wind11 mph SW
Gusts18 mph
UV index8 – High
Precip chance5%
Sunrise06:14
Sunset19:36
Thursday 27/8 Sunny
82°73°0.7 mm⌄
Wind15 mph S
Gusts18 mph
UV index7 – High
Precip chance41%
Sunrise06:15
Sunset19:34
Friday 28/8 Sunny
86°74°17%⌄
Wind10 mph SW
Gusts18 mph
UV index8 – Very high
Precip chance17%
Sunrise06:16
Sunset19:33
Saturday 29/8 Mostly cloudy
87°75°0.9 mm⌄
Wind9 mph NE
Gusts13 mph
UV index8 – Very high
Precip chance38%
Sunrise06:17
Sunset19:31
Sunday 30/8 Mostly cloudy
80°70°6%⌄
Wind11 mph NE
Gusts18 mph
UV index7 – High
Precip chance6%
Sunrise06:18
Sunset19:30
Monday 31/8 Partly cloudy
82°72°0.9 mm⌄
Wind16 mph S
Gusts29 mph
UV index7 – High
Precip chance46%
Sunrise06:19
Sunset19:28
Tuesday 1/9 Mostly cloudy
86°73°41.4 mm⌄
Wind16 mph S
Gusts31 mph
UV index8 – Very high
Precip chance80%
Sunrise06:20
Sunset19:26
Wednesday 2/9 Mostly cloudy
85°72°9%⌄
Wind9 mph W
Gusts18 mph
UV index7 – High
Precip chance9%
Sunrise06:21
Sunset19:25
Thursday 3/9 Sunny
80°69°4%⌄
Wind11 mph NE
Gusts16 mph
UV index7 – High
Precip chance4%
Sunrise06:22
Sunset19:23
Friday 4/9 Sunny
79°68°6%⌄
Wind9 mph S
Gusts18 mph
UV index7 – High
Precip chance6%
Sunrise06:23
Sunset19:21
Saturday 5/9 Showers
83°70°0.3 mm⌄
Wind9 mph E
Gusts14 mph
UV index7 – High
Precip chance36%
Sunrise06:24
Sunset19:20
Sunday 6/9 Rain (climatological)
74°64°15.1 mm⌄
Day≈69–80°
Night≈58–69°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
76°65°20%⌄
Day≈71–82°
Night≈59–70°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
78°66°20%⌄
Day≈73–83°
Night≈60–71°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
78°66°9.4 mm⌄
Day≈73–83°
Night≈60–71°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
72°62°20%⌄
Day≈67–78°
Night≈57–68°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
68°60°20%⌄
Day≈63–74°
Night≈55–65°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
71°62°13.6 mm⌄
Day≈66–77°
Night≈56–67°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
73°63°20%⌄
Day≈68–79°
Night≈58–68°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
77°65°20%⌄
Day≈71–82°
Night≈60–71°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
77°65°14.7 mm⌄
Day≈72–83°
Night≈60–71°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
78°66°20%⌄
Day≈73–83°
Night≈60–71°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
73°63°20%⌄
Day≈67–78°
Night≈57–68°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
71°62°14.3 mm⌄
Day≈66–77°
Night≈56–67°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
72°62°20%⌄
Day≈66–77°
Night≈57–67°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
77°65°20%⌄
Day≈71–82°
Night≈60–70°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
79°67°9.8 mm⌄
Day≈74–85°
Night≈61–72°
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 Cold Spring Harbor, 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.