Colonial Beach · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Colonial Beach & 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
37°
Fri, Sep 11
Coldest night
16°
Thu, Sep 10
Days with precip
7 / 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
30° 17°
78% precip chance
Sat 12 – Sun 13 Sep
29° 19°
57% precip chance
Sat 19 – Sun 20 Sep
32° 20°
typical range
Sat 26 – Sun 27 Sep
29° 19°
typical range
30 days — Colonial Beach
14 forecast + 16 climatology
Wed · Today Sunny
35°24°17%⌄
Wind15 mph SE
Gusts24 mph
UV index7 – High
Precip chance17%
Sunrise06:38
Sunset19:36
Thu · Tomorrow Sunny
33°23°2.2 mm⌄
Wind24 mph SW
Gusts32 mph
UV index8 – Very high
Precip chance61%
Sunrise06:39
Sunset19:35
Friday 4/9 Showers
34°22°5.8 mm⌄
Wind15 mph S
Gusts29 mph
UV index8 – Very high
Precip chance79%
Sunrise06:40
Sunset19:33
Saturday 5/9 Mostly cloudy
30°22°4.6 mm⌄
Wind9 mph E
Gusts16 mph
UV index7 – High
Precip chance78%
Sunrise06:41
Sunset19:32
Sunday 6/9 Sunny
27°17°8%⌄
Wind14 mph E
Gusts19 mph
UV index7 – High
Precip chance8%
Sunrise06:41
Sunset19:30
Monday 7/9 Partly cloudy
25°20°16%⌄
Wind12 mph E
Gusts22 mph
UV index7 – High
Precip chance16%
Sunrise06:42
Sunset19:29
Tuesday 8/9 Mostly cloudy
27°20°19.7 mm⌄
Wind14 mph SW
Gusts29 mph
UV index6 – High
Precip chance90%
Sunrise06:43
Sunset19:27
Wednesday 9/9 Showers
23°17°1.1 mm⌄
Wind13 mph N
Gusts21 mph
UV index5 – Moderate
Precip chance62%
Sunrise06:44
Sunset19:25
Thursday 10/9 Sunny
29°16°9%⌄
Wind12 mph S
Gusts32 mph
UV index7 – High
Precip chance9%
Sunrise06:45
Sunset19:24
Friday 11/9 Sunny
37°25°1.2 mm⌄
Wind14 mph SW
Gusts37 mph
UV index9 – Very high
Precip chance57%
Sunrise06:46
Sunset19:22
Saturday 12/9 Sunny
29°22°1.5 mm⌄
Wind11 mph N
Gusts22 mph
UV index7 – High
Precip chance57%
Sunrise06:47
Sunset19:21
Sunday 13/9 Mostly cloudy
25°19°12%⌄
Wind10 mph S
Gusts19 mph
UV index6 – High
Precip chance12%
Sunrise06:47
Sunset19:19
Monday 14/9 Sunny
33°21°0.3 mm⌄
Wind11 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance36%
Sunrise06:48
Sunset19:18
Tuesday 15/9 Mostly cloudy
27°20°17%⌄
Wind13 mph NE
Gusts23 mph
UV index7 – High
Precip chance17%
Sunrise06:49
Sunset19:16
Wednesday 16/9 Rain (climatological)
28°20°6.3 mm⌄
Day≈25–31°
Night≈17–23°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
33°22°20%⌄
Day≈30–36°
Night≈19–25°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
33°23°20%⌄
Day≈30–36°
Night≈20–26°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
32°22°4.5 mm⌄
Day≈29–35°
Night≈19–25°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
28°20°20%⌄
Day≈25–31°
Night≈17–23°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
27°19°20%⌄
Day≈24–30°
Night≈16–22°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
28°20°6.8 mm⌄
Day≈25–31°
Night≈17–23°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
31°22°8.2 mm⌄
Day≈28–34°
Night≈19–25°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
29°20°20%⌄
Day≈26–32°
Night≈17–23°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
27°19°20%⌄
Day≈24–30°
Night≈16–22°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
26°18°5.3 mm⌄
Day≈23–29°
Night≈15–21°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
27°19°20%⌄
Day≈24–30°
Night≈16–22°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
28°20°20%⌄
Day≈25–31°
Night≈17–23°
Precip≈3.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
27°17°6.3 mm⌄
Day≈24–30°
Night≈14–20°
Precip≈3.1 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 Colonial Beach, 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.