Colchester · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Colchester & 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
81°
Thu, Aug 27
Coldest night
55°
Sun, Aug 30
Days with precip
3 / 14
of 14 forecast days
Nicest day
Wed, Sep 2
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
73° 55°
15% precip chance
Sat 5 – Sun 6 Sep
65° 59°
83% precip chance
Sat 12 – Sun 13 Sep
60° 51°
typical range
Sat 19 – Sun 20 Sep
56° 48°
typical range
30 days — Colchester
14 forecast + 16 climatology
Mon · Today Sunny
74°57°0.5 mm⌄
Wind21 mph S
Gusts22 mph
UV index6 – High
Precip chance36%
Sunrise06:06
Sunset19:43
Tue · Tomorrow Showers
71°60°3.0 mm⌄
Wind15 mph NW
Gusts18 mph
UV index4 – Moderate
Precip chance69%
Sunrise06:07
Sunset19:42
Wednesday 26/8 Sunny
73°57°9%⌄
Wind9 mph S
Gusts15 mph
UV index6 – High
Precip chance9%
Sunrise06:08
Sunset19:40
Thursday 27/8 Sunny
81°60°0.7 mm⌄
Wind22 mph S
Gusts36 mph
UV index7 – High
Precip chance36%
Sunrise06:09
Sunset19:38
Friday 28/8 Showers
75°65°11.4 mm⌄
Wind23 mph S
Gusts35 mph
UV index6 – High
Precip chance79%
Sunrise06:10
Sunset19:36
Saturday 29/8 Mostly cloudy
73°60°12%⌄
Wind9 mph NW
Gusts14 mph
UV index6 – High
Precip chance12%
Sunrise06:11
Sunset19:35
Sunday 30/8 Mostly cloudy
69°55°15%⌄
Wind19 mph S
Gusts24 mph
UV index5 – Moderate
Precip chance15%
Sunrise06:13
Sunset19:33
Monday 31/8 Mostly cloudy
70°62°0.7 mm⌄
Wind12 mph S
Gusts16 mph
UV index6 – High
Precip chance52%
Sunrise06:14
Sunset19:31
Tuesday 1/9 Sunny
68°59°9%⌄
Wind13 mph NW
Gusts24 mph
UV index5 – Moderate
Precip chance9%
Sunrise06:15
Sunset19:29
Wednesday 2/9 Mostly cloudy
70°57°13%⌄
Wind6 mph NE
Gusts13 mph
UV index5 – Moderate
Precip chance13%
Sunrise06:16
Sunset19:28
Thursday 3/9 Partly cloudy
66°62°26%⌄
Wind9 mph SE
Gusts13 mph
UV index4 – Moderate
Precip chance26%
Sunrise06:17
Sunset19:26
Friday 4/9 Showers
66°62°0.8 mm⌄
Wind15 mph N
Gusts23 mph
UV index5 – Moderate
Precip chance56%
Sunrise06:18
Sunset19:24
Saturday 5/9 Mostly cloudy
65°60°0.4 mm⌄
Wind9 mph N
Gusts17 mph
UV index4 – Moderate
Precip chance48%
Sunrise06:20
Sunset19:22
Sunday 6/9 Mostly cloudy
63°59°4.8 mm⌄
Wind18 mph S
Gusts25 mph
UV index4 – Moderate
Precip chance83%
Sunrise06:21
Sunset19:20
Monday 7/9 Rain (climatological)
62°52°6.0 mm⌄
Day≈56–67°
Night≈46–57°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
65°53°20%⌄
Day≈59–70°
Night≈48–59°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
63°53°20%⌄
Day≈58–69°
Night≈47–58°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
65°54°3.4 mm⌄
Day≈60–71°
Night≈48–59°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
59°50°20%⌄
Day≈53–64°
Night≈44–55°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
60°51°20%⌄
Day≈54–65°
Night≈45–56°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
60°51°5.6 mm⌄
Day≈55–65°
Night≈45–56°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
60°51°20%⌄
Day≈55–65°
Night≈45–56°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
68°55°20%⌄
Day≈62–73°
Night≈50–61°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
67°55°5.1 mm⌄
Day≈61–72°
Night≈49–60°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
63°52°20%⌄
Day≈57–68°
Night≈47–58°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
61°51°20%⌄
Day≈56–67°
Night≈46–57°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
55°48°2.9 mm⌄
Day≈50–60°
Night≈42–53°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
56°48°20%⌄
Day≈51–61°
Night≈43–54°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
62°52°20%⌄
Day≈57–68°
Night≈47–57°
Precip≈1.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
68°55°6.2 mm⌄
Day≈62–73°
Night≈50–61°
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 Colchester, 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.