Combined Locks · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Combined Locks & 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
85°
Wed, Aug 26
Coldest night
50°
Thu, Aug 20
Days with precip
4 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
81° 53°
36% precip chance
Sat 29 – Sun 30 Aug
82° 58°
36% precip chance
Sat 5 – Sun 6 Sep
76° 51°
typical range
Sat 12 – Sun 13 Sep
76° 51°
typical range
30 days — Combined Locks
14 forecast + 16 climatology
Thu · Today Sunny
84°50°5%⌄
Wind11 mph SW
Gusts21 mph
UV index7 – High
Precip chance5%
Sunrise06:02
Sunset19:50
Fri · Tomorrow Mostly cloudy
81°63°36.8 mm⌄
Wind17 mph SW
Gusts26 mph
UV index7 – High
Precip chance80%
Sunrise06:03
Sunset19:49
Saturday 22/8 Sunny
81°59°0.7 mm⌄
Wind12 mph N
Gusts21 mph
UV index6 – High
Precip chance36%
Sunrise06:04
Sunset19:47
Sunday 23/8 Sunny
79°53°6%⌄
Wind12 mph NE
Gusts26 mph
UV index7 – High
Precip chance6%
Sunrise06:05
Sunset19:45
Monday 24/8 Sunny
77°50°6%⌄
Wind14 mph SE
Gusts25 mph
UV index7 – High
Precip chance6%
Sunrise06:07
Sunset19:44
Tuesday 25/8 Sunny
79°58°0.3 mm⌄
Wind12 mph SW
Gusts22 mph
UV index7 – High
Precip chance36%
Sunrise06:08
Sunset19:42
Wednesday 26/8 Sunny
85°64°9.3 mm⌄
Wind14 mph SW
Gusts26 mph
UV index7 – High
Precip chance70%
Sunrise06:09
Sunset19:40
Thursday 27/8 Sunny
80°61°9%⌄
Wind8 mph NW
Gusts17 mph
UV index6 – High
Precip chance9%
Sunrise06:10
Sunset19:38
Friday 28/8 Sunny
78°57°6%⌄
Wind14 mph E
Gusts20 mph
UV index7 – High
Precip chance6%
Sunrise06:11
Sunset19:37
Saturday 29/8 Sunny
80°58°17%⌄
Wind18 mph SW
Gusts28 mph
UV index6 – High
Precip chance17%
Sunrise06:12
Sunset19:35
Sunday 30/8 Sunny
82°62°0.3 mm⌄
Wind14 mph NE
Gusts25 mph
UV index7 – High
Precip chance36%
Sunrise06:14
Sunset19:33
Monday 31/8 Showers
67°55°4.9 mm⌄
Wind12 mph NE
Gusts23 mph
UV index4 – Moderate
Precip chance85%
Sunrise06:15
Sunset19:31
Tuesday 1/9 Sunny
73°51°7%⌄
Wind9 mph N
Gusts17 mph
UV index6 – High
Precip chance7%
Sunrise06:16
Sunset19:30
Wednesday 2/9 Sunny
77°57°17.1 mm⌄
Wind19 mph S
Gusts36 mph
UV index6 – High
Precip chance76%
Sunrise06:17
Sunset19:28
Thursday 3/9 Rain (climatological)
71°50°12.6 mm⌄
Day≈66–76°
Night≈44–55°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
74°51°20%⌄
Day≈68–79°
Night≈46–56°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
76°53°20%⌄
Day≈71–82°
Night≈47–58°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
74°51°12.1 mm⌄
Day≈69–80°
Night≈46–57°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
68°48°20%⌄
Day≈62–73°
Night≈42–53°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
64°46°20%⌄
Day≈59–70°
Night≈40–51°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
64°46°11.1 mm⌄
Day≈59–70°
Night≈40–51°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
71°49°20%⌄
Day≈65–76°
Night≈44–55°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
76°53°20%⌄
Day≈71–82°
Night≈47–58°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
76°53°8.6 mm⌄
Day≈70–81°
Night≈47–58°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
73°51°20%⌄
Day≈68–79°
Night≈46–56°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
65°46°20%⌄
Day≈60–71°
Night≈41–52°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
66°47°9.6 mm⌄
Day≈61–72°
Night≈41–52°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
69°49°20%⌄
Day≈64–75°
Night≈43–54°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
72°50°20%⌄
Day≈67–78°
Night≈45–56°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
71°50°17.6 mm⌄
Day≈66–77°
Night≈44–55°
Precip≈5.9 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 Combined Locks, 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.