Barnwell · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Barnwell & 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
40°
Thu, Aug 20
Coldest night
21°
Sat, Aug 22
Days with precip
5 / 14
of 14 forecast days
Nicest day
Sat, Aug 29
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
36° 21°
89% precip chance
Sat 29 – Sun 30 Aug
34° 22°
4% precip chance
Sat 5 – Sun 6 Sep
31° 19°
typical range
Sat 12 – Sun 13 Sep
32° 20°
typical range
30 days — Barnwell
14 forecast + 16 climatology
Wed · Today Sunny
38°24°4%⌄
Wind10 mph SE
Gusts22 mph
UV index9 – Very high
Precip chance4%
Sunrise06:51
Sunset20:07
Thu · Tomorrow Sunny
40°24°0.3 mm⌄
Wind18 mph N
Gusts29 mph
UV index10 – Very high
Precip chance36%
Sunrise06:51
Sunset20:05
Friday 21/8 Thunderstorms
36°22°13.3 mm⌄
Wind14 mph S
Gusts27 mph
UV index9 – Very high
Precip chance76%
Sunrise06:52
Sunset20:04
Saturday 22/8 Showers
33°21°17.0 mm⌄
Wind16 mph SW
Gusts26 mph
UV index9 – Very high
Precip chance89%
Sunrise06:53
Sunset20:03
Sunday 23/8 Sunny
36°22°1.1 mm⌄
Wind11 mph S
Gusts27 mph
UV index8 – Very high
Precip chance57%
Sunrise06:53
Sunset20:02
Monday 24/8 Mostly cloudy
36°23°0.2 mm⌄
Wind10 mph S
Gusts24 mph
UV index9 – Very high
Precip chance17%
Sunrise06:54
Sunset20:01
Tuesday 25/8 Mostly cloudy
33°23°0.3 mm⌄
Wind10 mph SW
Gusts24 mph
UV index8 – Very high
Precip chance36%
Sunrise06:55
Sunset19:59
Wednesday 26/8 Mostly cloudy
30°23°0.9 mm⌄
Wind14 mph SW
Gusts26 mph
UV index6 – High
Precip chance58%
Sunrise06:55
Sunset19:58
Thursday 27/8 Mostly cloudy
31°22°0.7 mm⌄
Wind12 mph SW
Gusts25 mph
UV index7 – High
Precip chance54%
Sunrise06:56
Sunset19:57
Friday 28/8 Showers
31°22°7.2 mm⌄
Wind6 mph S
Gusts15 mph
UV index7 – High
Precip chance78%
Sunrise06:57
Sunset19:56
Saturday 29/8 Sunny
32°22°4%⌄
Wind6 mph SW
Gusts13 mph
UV index8 – Very high
Precip chance4%
Sunrise06:57
Sunset19:54
Sunday 30/8 Sunny
34°24°3%⌄
Wind10 mph SW
Gusts22 mph
UV index8 – Very high
Precip chance3%
Sunrise06:58
Sunset19:53
Monday 31/8 Sunny
35°23°4%⌄
Wind11 mph S
Gusts21 mph
UV index8 – Very high
Precip chance4%
Sunrise06:59
Sunset19:52
Tuesday 1/9 Mostly cloudy
31°22°2.1 mm⌄
Wind14 mph E
Gusts23 mph
UV index7 – High
Precip chance71%
Sunrise06:59
Sunset19:51
Wednesday 2/9 Rain (climatological)
30°20°6.6 mm⌄
Day≈27–33°
Night≈17–23°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
35°23°20%⌄
Day≈32–38°
Night≈20–26°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Rain (climatological)
31°21°6.6 mm⌄
Day≈28–34°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Rain (climatological)
28°19°8.8 mm⌄
Day≈25–31°
Night≈16–22°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
34°22°20%⌄
Day≈31–37°
Night≈19–25°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
32°21°4.7 mm⌄
Day≈29–35°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
28°18°7.2 mm⌄
Day≈25–31°
Night≈15–21°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
32°21°10.7 mm⌄
Day≈29–35°
Night≈18–24°
Precip≈3.7 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 Barnwell, 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.