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
96°
Fri, Aug 28
Coldest night
52°
Mon, Aug 17
Days with precip
3 / 14
of 14 forecast days
Nicest day
Mon, Aug 17
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
92° 66°
65% precip chance
Sat 29 – Sun 30 Aug
94° 66°
36% precip chance
Sat 5 – Sun 6 Sep
79° 55°
typical range
Sat 12 – Sun 13 Sep
78° 54°
typical range
30 days — Lyons
14 forecast + 16 climatology
Mon · Today Sunny
88°52°4%⌄
Wind15 mph W
Gusts23 mph
UV index10 – Very high
Precip chance4%
Sunrise06:14
Sunset19:55
Tue · Tomorrow Mostly cloudy
87°64°0.4 mm⌄
Wind11 mph E
Gusts22 mph
UV index8 – Very high
Precip chance36%
Sunrise06:15
Sunset19:54
Wednesday 19/8 Sunny
90°62°3%⌄
Wind13 mph SE
Gusts19 mph
UV index8 – High
Precip chance3%
Sunrise06:16
Sunset19:53
Thursday 20/8 Sunny
90°60°2%⌄
Wind13 mph SE
Gusts24 mph
UV index10 – Very high
Precip chance2%
Sunrise06:17
Sunset19:51
Friday 21/8 Sunny
94°68°0.6 mm⌄
Wind16 mph N
Gusts27 mph
UV index8 – Very high
Precip chance36%
Sunrise06:18
Sunset19:50
Saturday 22/8 Mostly cloudy
92°66°6%⌄
Wind16 mph SW
Gusts20 mph
UV index7 – High
Precip chance6%
Sunrise06:19
Sunset19:48
Sunday 23/8 Mostly cloudy
90°67°4.9 mm⌄
Wind12 mph E
Gusts20 mph
UV index7 – High
Precip chance65%
Sunrise06:20
Sunset19:47
Monday 24/8 Sunny
90°64°5%⌄
Wind13 mph E
Gusts22 mph
UV index8 – Very high
Precip chance5%
Sunrise06:21
Sunset19:45
Tuesday 25/8 Sunny
89°58°1.5 mm⌄
Wind17 mph N
Gusts26 mph
UV index8 – Very high
Precip chance57%
Sunrise06:22
Sunset19:44
Wednesday 26/8 Sunny
88°61°1.2 mm⌄
Wind16 mph S
Gusts28 mph
UV index8 – Very high
Precip chance57%
Sunrise06:23
Sunset19:42
Thursday 27/8 Sunny
91°66°17%⌄
Wind11 mph E
Gusts21 mph
UV index8 – Very high
Precip chance17%
Sunrise06:23
Sunset19:41
Friday 28/8 Mostly cloudy
96°65°7%⌄
Wind13 mph E
Gusts21 mph
UV index8 – Very high
Precip chance7%
Sunrise06:24
Sunset19:39
Saturday 29/8 Mostly cloudy
94°71°8%⌄
Wind15 mph NE
Gusts26 mph
UV index8 – Very high
Precip chance8%
Sunrise06:25
Sunset19:38
Sunday 30/8 Sunny
87°66°0.4 mm⌄
Wind11 mph SE
Gusts22 mph
UV index8 – Very high
Precip chance36%
Sunrise06:26
Sunset19:36
Monday 31/8 Light rain (climatological)
91°64°1.9 mm⌄
Day≈86–97°
Night≈59–69°
Precip≈0.8 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
84°58°20%⌄
Day≈79–90°
Night≈52–63°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Partly cloudy (climatological)
87°59°20%⌄
Day≈81–92°
Night≈54–65°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Light rain (climatological)
84°58°1.5 mm⌄
Day≈79–90°
Night≈53–63°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
78°54°20%⌄
Day≈73–84°
Night≈49–60°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
79°55°20%⌄
Day≈74–85°
Night≈49–60°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Light rain (climatological)
79°55°1.6 mm⌄
Day≈73–84°
Night≈49–60°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
85°58°20%⌄
Day≈80–90°
Night≈53–64°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
88°60°20%⌄
Day≈83–94°
Night≈55–66°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Light rain (climatological)
85°59°1.5 mm⌄
Day≈80–91°
Night≈53–64°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
88°60°20%⌄
Day≈82–93°
Night≈55–65°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
81°56°20%⌄
Day≈76–87°
Night≈51–62°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Light rain (climatological)
78°54°1.7 mm⌄
Day≈72–83°
Night≈49–59°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
78°54°20%⌄
Day≈72–83°
Night≈49–59°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
84°58°20%⌄
Day≈79–90°
Night≈53–63°
Precip≈0.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Light rain (climatological)
89°61°1.6 mm⌄
Day≈84–94°
Night≈55–66°
Precip≈0.8 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.