Greenwich · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Greenwich & 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
80°
Mon, Aug 24
Coldest night
49°
Thu, Sep 3
Days with precip
4 / 14
of 14 forecast days
Nicest day
Thu, Sep 3
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
77° 52°
57% precip chance
Sat 5 – Sun 6 Sep
76° 53°
9% precip chance
Sat 12 – Sun 13 Sep
65° 44°
typical range
Sat 19 – Sun 20 Sep
63° 44°
typical range
30 days — Greenwich
14 forecast + 16 climatology
Mon · Today Sunny
80°57°5%⌄
Wind10 mph SW
Gusts17 mph
UV index7 – High
Precip chance5%
Sunrise06:09
Sunset19:42
Tue · Tomorrow Sunny
71°57°0.6 mm⌄
Wind8 mph W
Gusts15 mph
UV index4 – Moderate
Precip chance43%
Sunrise06:10
Sunset19:41
Wednesday 26/8 Mostly cloudy
76°55°17%⌄
Wind5 mph S
Gusts15 mph
UV index7 – High
Precip chance17%
Sunrise06:11
Sunset19:39
Thursday 27/8 Mostly cloudy
79°60°4.2 mm⌄
Wind15 mph S
Gusts30 mph
UV index7 – High
Precip chance78%
Sunrise06:13
Sunset19:38
Friday 28/8 Showers
80°62°4.8 mm⌄
Wind10 mph W
Gusts25 mph
UV index6 – High
Precip chance82%
Sunrise06:14
Sunset19:36
Saturday 29/8 Sunny
71°52°8%⌄
Wind5 mph N
Gusts16 mph
UV index6 – High
Precip chance8%
Sunrise06:15
Sunset19:34
Sunday 30/8 Sunny
77°53°1.3 mm⌄
Wind12 mph S
Gusts28 mph
UV index7 – High
Precip chance57%
Sunrise06:16
Sunset19:32
Monday 31/8 Showers
76°60°11.4 mm⌄
Wind12 mph W
Gusts28 mph
UV index6 – High
Precip chance85%
Sunrise06:17
Sunset19:31
Tuesday 1/9 Sunny
71°52°8%⌄
Wind8 mph N
Gusts16 mph
UV index6 – High
Precip chance8%
Sunrise06:18
Sunset19:29
Wednesday 2/9 Mostly cloudy
66°50°17%⌄
Wind3 mph NW
Gusts13 mph
UV index5 – Moderate
Precip chance17%
Sunrise06:19
Sunset19:27
Thursday 3/9 Sunny
71°49°10%⌄
Wind3 mph NW
Gusts13 mph
UV index6 – High
Precip chance10%
Sunrise06:20
Sunset19:26
Friday 4/9 Mostly cloudy
71°56°16%⌄
Wind5 mph NE
Gusts14 mph
UV index5 – Moderate
Precip chance16%
Sunrise06:21
Sunset19:24
Saturday 5/9 Sunny
74°54°9%⌄
Wind5 mph NW
Gusts6 mph
UV index6 – High
Precip chance9%
Sunrise06:22
Sunset19:22
Sunday 6/9 Sunny
76°53°8%⌄
Wind4 mph SE
Gusts15 mph
UV index6 – High
Precip chance8%
Sunrise06:23
Sunset19:20
Monday 7/9 Rain (climatological)
66°48°3.0 mm⌄
Day≈61–72°
Night≈42–53°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
67°48°20%⌄
Day≈62–73°
Night≈43–54°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
71°51°20%⌄
Day≈66–76°
Night≈45–56°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
69°49°3.8 mm⌄
Day≈63–74°
Night≈44–54°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
64°46°20%⌄
Day≈59–70°
Night≈41–52°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
60°44°20%⌄
Day≈54–65°
Night≈38–49°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
65°47°5.8 mm⌄
Day≈60–70°
Night≈42–52°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
67°48°20%⌄
Day≈61–72°
Night≈42–53°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
69°49°20%⌄
Day≈64–75°
Night≈44–55°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
68°49°3.8 mm⌄
Day≈62–73°
Night≈43–54°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
71°50°20%⌄
Day≈65–76°
Night≈45–56°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
66°48°20%⌄
Day≈61–72°
Night≈42–53°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
60°44°5.8 mm⌄
Day≈54–65°
Night≈38–49°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
63°46°20%⌄
Day≈57–68°
Night≈40–51°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
66°48°20%⌄
Day≈61–72°
Night≈42–53°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
70°50°4.8 mm⌄
Day≈65–76°
Night≈45–55°
Precip≈1.9 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 Greenwich, 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.