Lyons · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Lyons & 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°
Sat, Sep 5
Coldest night
22°
Wed, Aug 26
Days with precip
4 / 14
of 14 forecast days
Nicest day
Sun, Aug 30
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
33° 24°
63% precip chance
Sat 5 – Sun 6 Sep
40° 23°
46% precip chance
Sat 12 – Sun 13 Sep
33° 20°
typical range
Sat 19 – Sun 20 Sep
34° 20°
typical range
30 days — Lyons
14 forecast + 16 climatology
Wed · Today Showers
32°22°25.3 mm⌄
Wind12 mph S
Gusts22 mph
UV index9 – Very high
Precip chance86%
Sunrise07:00
Sunset20:01
Thu · Tomorrow Showers
34°22°6.8 mm⌄
Wind8 mph S
Gusts20 mph
UV index3 – Low
Precip chance74%
Sunrise07:01
Sunset20:00
Friday 28/8 Showers
32°23°5.3 mm⌄
Wind10 mph W
Gusts17 mph
UV index7 – High
Precip chance80%
Sunrise07:02
Sunset19:59
Saturday 29/8 Mostly cloudy
32°24°1.4 mm⌄
Wind6 mph SE
Gusts15 mph
UV index8 – Very high
Precip chance63%
Sunrise07:02
Sunset19:57
Sunday 30/8 Sunny
33°24°11%⌄
Wind8 mph SE
Gusts18 mph
UV index8 – Very high
Precip chance11%
Sunrise07:03
Sunset19:56
Monday 31/8 Sunny
35°24°5%⌄
Wind9 mph SE
Gusts18 mph
UV index8 – Very high
Precip chance5%
Sunrise07:03
Sunset19:55
Tuesday 1/9 Sunny
37°25°7%⌄
Wind7 mph S
Gusts14 mph
UV index9 – Very high
Precip chance7%
Sunrise07:04
Sunset19:54
Wednesday 2/9 Sunny
37°26°0.9 mm⌄
Wind10 mph S
Gusts19 mph
UV index8 – Very high
Precip chance37%
Sunrise07:05
Sunset19:52
Thursday 3/9 Sunny
38°27°4%⌄
Wind11 mph SE
Gusts18 mph
UV index9 – Very high
Precip chance4%
Sunrise07:05
Sunset19:51
Friday 4/9 Sunny
38°26°4%⌄
Wind11 mph SE
Gusts23 mph
UV index9 – Very high
Precip chance4%
Sunrise07:06
Sunset19:50
Saturday 5/9 Sunny
40°25°0.4 mm⌄
Wind14 mph E
Gusts27 mph
UV index9 – Very high
Precip chance36%
Sunrise07:07
Sunset19:48
Sunday 6/9 Mostly cloudy
31°23°0.6 mm⌄
Wind13 mph N
Gusts21 mph
UV index7 – High
Precip chance46%
Sunrise07:07
Sunset19:47
Monday 7/9 Sunny
36°22°0.4 mm⌄
Wind7 mph SE
Gusts18 mph
UV index9 – Very high
Precip chance36%
Sunrise07:08
Sunset19:46
Tuesday 8/9 Sunny
36°24°1.0 mm⌄
Wind8 mph S
Gusts20 mph
UV index8 – Very high
Precip chance45%
Sunrise07:08
Sunset19:45
Wednesday 9/9 Rain (climatological)
31°21°7.3 mm⌄
Day≈28–34°
Night≈18–24°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
35°23°20%⌄
Day≈32–38°
Night≈20–26°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
33°22°12.1 mm⌄
Day≈30–36°
Night≈19–25°
Precip≈3.6 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≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
30°21°7.3 mm⌄
Day≈27–33°
Night≈18–24°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
33°23°20%⌄
Day≈30–36°
Night≈20–26°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
36°24°20%⌄
Day≈33–39°
Night≈21–27°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
36°24°12.1 mm⌄
Day≈33–39°
Night≈21–27°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
30°21°10.3 mm⌄
Day≈27–33°
Night≈18–24°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
32°22°20%⌄
Day≈29–35°
Night≈19–25°
Precip≈3.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
35°24°8.2 mm⌄
Day≈32–38°
Night≈21–27°
Precip≈3.6 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 Lyons, 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.