Avalon · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Avalon & 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°
Thu, Aug 27
Coldest night
40°
Sun, Sep 6
Days with precip
7 / 14
of 14 forecast days
Nicest day
Wed, Aug 26
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
78° 53°
69% precip chance
Sat 5 – Sun 6 Sep
58° 40°
61% precip chance
Sat 12 – Sun 13 Sep
52° 39°
typical range
Sat 19 – Sun 20 Sep
51° 40°
typical range
30 days — Avalon
14 forecast + 16 climatology
Mon · Today Sunny
75°56°3.9 mm⌄
Wind21 mph NW
Gusts41 mph
UV index4 – Moderate
Precip chance68%
Sunrise06:05
Sunset20:12
Tue · Tomorrow Sunny
73°55°0.6 mm⌄
Wind24 mph NW
Gusts42 mph
UV index5 – Moderate
Precip chance36%
Sunrise06:06
Sunset20:10
Wednesday 26/8 Sunny
77°61°2%⌄
Wind8 mph SE
Gusts14 mph
UV index6 – Moderate
Precip chance2%
Sunrise06:08
Sunset20:08
Thursday 27/8 Sunny
80°64°17%⌄
Wind19 mph SE
Gusts39 mph
UV index5 – Moderate
Precip chance17%
Sunrise06:10
Sunset20:05
Friday 28/8 Showers
74°61°1.5 mm⌄
Wind19 mph SE
Gusts41 mph
UV index6 – High
Precip chance57%
Sunrise06:11
Sunset20:03
Saturday 29/8 Sunny
78°60°6%⌄
Wind12 mph SE
Gusts27 mph
UV index7 – High
Precip chance6%
Sunrise06:13
Sunset20:01
Sunday 30/8 Thunderstorms
69°53°2.1 mm⌄
Wind16 mph S
Gusts25 mph
UV index5 – Moderate
Precip chance69%
Sunrise06:15
Sunset19:59
Monday 31/8 Showers
53°47°4.4 mm⌄
Wind14 mph NE
Gusts22 mph
UV index3 – Moderate
Precip chance85%
Sunrise06:16
Sunset19:56
Tuesday 1/9 Sunny
61°48°10%⌄
Wind11 mph E
Gusts20 mph
UV index4 – Moderate
Precip chance10%
Sunrise06:18
Sunset19:54
Wednesday 2/9 Mostly cloudy
67°55°0.1 mm⌄
Wind17 mph E
Gusts32 mph
UV index5 – Moderate
Precip chance17%
Sunrise06:20
Sunset19:52
Thursday 3/9 Mostly cloudy
70°57°1.9 mm⌄
Wind17 mph SE
Gusts34 mph
UV index6 – High
Precip chance57%
Sunrise06:21
Sunset19:50
Friday 4/9 Sunny
62°49°9.8 mm⌄
Wind14 mph NE
Gusts21 mph
UV index4 – Moderate
Precip chance76%
Sunrise06:23
Sunset19:47
Saturday 5/9 Showers
58°47°2.2 mm⌄
Wind16 mph W
Gusts23 mph
UV index4 – Moderate
Precip chance61%
Sunrise06:24
Sunset19:45
Sunday 6/9 Mostly cloudy
54°40°18%⌄
Wind17 mph NW
Gusts22 mph
UV index3 – Moderate
Precip chance18%
Sunrise06:26
Sunset19:43
Monday 7/9 Rain (climatological)
58°44°5.8 mm⌄
Day≈52–63°
Night≈38–49°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
62°47°20%⌄
Day≈57–68°
Night≈41–52°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
61°46°20%⌄
Day≈56–67°
Night≈41–51°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
60°45°3.1 mm⌄
Day≈54–65°
Night≈40–51°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
56°43°20%⌄
Day≈50–61°
Night≈37–48°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
50°39°20%⌄
Day≈45–56°
Night≈34–45°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
52°40°3.3 mm⌄
Day≈46–57°
Night≈35–46°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
56°43°20%⌄
Day≈51–61°
Night≈38–48°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
58°44°20%⌄
Day≈53–64°
Night≈39–50°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
62°46°3.7 mm⌄
Day≈56–67°
Night≈41–52°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
59°45°20%⌄
Day≈54–64°
Night≈39–50°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
55°42°20%⌄
Day≈49–60°
Night≈37–47°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
51°40°6.8 mm⌄
Day≈45–56°
Night≈34–45°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
50°40°20%⌄
Day≈45–56°
Night≈34–45°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
58°44°20%⌄
Day≈53–64°
Night≈39–50°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
57°44°6.0 mm⌄
Day≈52–63°
Night≈38–49°
Precip≈2.3 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 Avalon, 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.