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
107°
Sun, Aug 23
Coldest night
54°
Mon, Aug 31
Days with precip
3 / 14
of 14 forecast days
Nicest day
Fri, Aug 28
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
107° 68°
5% precip chance
Sat 29 – Sun 30 Aug
79° 62°
57% precip chance
Sat 5 – Sun 6 Sep
82° 61°
typical range
Sat 12 – Sun 13 Sep
80° 62°
typical range
30 days — Lyons
14 forecast + 16 climatology
Tue · Today Sunny
105°67°0.1 mm⌄
Wind21 mph SW
Gusts28 mph
UV index10 – Very high
Precip chance17%
Sunrise06:50
Sunset20:23
Wed · Tomorrow Showers
92°69°1.0 mm⌄
Wind21 mph NE
Gusts40 mph
UV index8 – Very high
Precip chance57%
Sunrise06:51
Sunset20:21
Thursday 20/8 Sunny
96°73°0.2 mm⌄
Wind9 mph S
Gusts21 mph
UV index9 – Very high
Precip chance17%
Sunrise06:51
Sunset20:20
Friday 21/8 Sunny
101°78°4%⌄
Wind13 mph SE
Gusts24 mph
UV index9 – Very high
Precip chance4%
Sunrise06:52
Sunset20:19
Saturday 22/8 Sunny
95°68°2%⌄
Wind20 mph E
Gusts36 mph
UV index8 – Very high
Precip chance2%
Sunrise06:53
Sunset20:17
Sunday 23/8 Mostly cloudy
107°80°5%⌄
Wind25 mph E
Gusts41 mph
UV index10 – Very high
Precip chance5%
Sunrise06:54
Sunset20:16
Monday 24/8 Mostly cloudy
100°84°6%⌄
Wind18 mph N
Gusts27 mph
UV index9 – Very high
Precip chance6%
Sunrise06:55
Sunset20:14
Tuesday 25/8 Mostly cloudy
92°82°8%⌄
Wind10 mph E
Gusts21 mph
UV index8 – Very high
Precip chance8%
Sunrise06:56
Sunset20:13
Wednesday 26/8 Mostly cloudy
81°70°2.3 mm⌄
Wind12 mph SW
Gusts21 mph
UV index7 – High
Precip chance58%
Sunrise06:57
Sunset20:12
Thursday 27/8 Mostly cloudy
79°63°10%⌄
Wind11 mph E
Gusts24 mph
UV index6 – High
Precip chance10%
Sunrise06:58
Sunset20:10
Friday 28/8 Mostly cloudy
77°64°6%⌄
Wind13 mph S
Gusts16 mph
UV index6 – High
Precip chance6%
Sunrise06:58
Sunset20:09
Saturday 29/8 Mostly cloudy
79°65°8%⌄
Wind16 mph S
Gusts25 mph
UV index7 – High
Precip chance8%
Sunrise06:59
Sunset20:07
Sunday 30/8 Showers
76°62°2.0 mm⌄
Wind22 mph S
Gusts33 mph
UV index6 – High
Precip chance57%
Sunrise07:00
Sunset20:06
Monday 31/8 Mostly cloudy
65°54°17%⌄
Wind19 mph E
Gusts33 mph
UV index4 – Moderate
Precip chance17%
Sunrise07:01
Sunset20:04
Tuesday 1/9 Light rain (climatological)
80°63°0.8 mm⌄
Day≈75–86°
Night≈58–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Partly cloudy (climatological)
85°66°20%⌄
Day≈80–91°
Night≈61–72°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
85°66°20%⌄
Day≈80–90°
Night≈60–71°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Light rain (climatological)
85°66°1.9 mm⌄
Day≈80–91°
Night≈61–72°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
82°64°20%⌄
Day≈77–87°
Night≈59–69°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
78°61°20%⌄
Day≈72–83°
Night≈56–67°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Light rain (climatological)
80°63°2.0 mm⌄
Day≈74–85°
Night≈57–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
83°65°20%⌄
Day≈78–88°
Night≈59–70°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
88°68°20%⌄
Day≈83–94°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Light rain (climatological)
86°67°1.9 mm⌄
Day≈81–92°
Night≈61–72°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
82°64°20%⌄
Day≈76–87°
Night≈59–69°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
79°62°20%⌄
Day≈74–85°
Night≈57–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Light rain (climatological)
80°63°1.7 mm⌄
Day≈75–85°
Night≈58–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
78°62°20%⌄
Day≈72–83°
Night≈56–67°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
80°63°20%⌄
Day≈75–85°
Night≈58–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Light rain (climatological)
86°66°1.3 mm⌄
Day≈80–91°
Night≈61–72°
Precip≈0.6 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.