Merton · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Merton & 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
91°
Fri, Sep 4
Coldest night
53°
Thu, Sep 10
Days with precip
6 / 14
of 14 forecast days
Nicest day
Tue, Sep 8
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
85° 62°
73% precip chance
Sat 5 – Sun 6 Sep
88° 67°
92% precip chance
Sat 12 – Sun 13 Sep
78° 60°
typical range
Sat 19 – Sun 20 Sep
77° 60°
typical range
30 days — Merton
14 forecast + 16 climatology
Fri · Today Sunny
85°58°6%⌄
Wind8 mph W
Gusts9 mph
UV index7 – High
Precip chance6%
Sunrise06:13
Sunset19:35
Sat · Tomorrow Mostly cloudy
73°62°0.8 mm⌄
Wind13 mph SW
Gusts34 mph
UV index5 – Moderate
Precip chance62%
Sunrise06:14
Sunset19:33
Sunday 30/8 Mostly cloudy
85°66°3.2 mm⌄
Wind18 mph SW
Gusts37 mph
UV index6 – High
Precip chance73%
Sunrise06:15
Sunset19:32
Monday 31/8 Mostly cloudy
87°70°0.9 mm⌄
Wind17 mph SW
Gusts29 mph
UV index7 – High
Precip chance58%
Sunrise06:16
Sunset19:30
Tuesday 1/9 Mostly cloudy
89°75°14%⌄
Wind10 mph W
Gusts33 mph
UV index7 – High
Precip chance14%
Sunrise06:17
Sunset19:28
Wednesday 2/9 Sunny
88°75°3%⌄
Wind17 mph SW
Gusts41 mph
UV index8 – Very high
Precip chance3%
Sunrise06:18
Sunset19:27
Thursday 3/9 Sunny
89°72°9%⌄
Wind7 mph S
Gusts13 mph
UV index8 – Very high
Precip chance9%
Sunrise06:19
Sunset19:25
Friday 4/9 Thunderstorms
91°73°0.3 mm⌄
Wind9 mph NW
Gusts14 mph
UV index7 – High
Precip chance36%
Sunrise06:20
Sunset19:23
Saturday 5/9 Sunny
88°72°2.4 mm⌄
Wind7 mph E
Gusts13 mph
UV index8 – Very high
Precip chance61%
Sunrise06:22
Sunset19:21
Sunday 6/9 Showers
71°67°21.2 mm⌄
Wind9 mph N
Gusts23 mph
UV index5 – Moderate
Precip chance92%
Sunrise06:23
Sunset19:20
Monday 7/9 Sunny
75°60°10%⌄
Wind10 mph NE
Gusts25 mph
UV index6 – High
Precip chance10%
Sunrise06:24
Sunset19:18
Tuesday 8/9 Sunny
74°63°10%⌄
Wind9 mph W
Gusts13 mph
UV index6 – High
Precip chance10%
Sunrise06:25
Sunset19:16
Wednesday 9/9 Showers
66°56°31.6 mm⌄
Wind13 mph NE
Gusts25 mph
UV index4 – Moderate
Precip chance84%
Sunrise06:26
Sunset19:14
Thursday 10/9 Mostly cloudy
61°53°8.5 mm⌄
Wind14 mph N
Gusts27 mph
UV index4 – Moderate
Precip chance88%
Sunrise06:27
Sunset19:12
Friday 11/9 Rain (climatological)
71°58°8.0 mm⌄
Day≈66–77°
Night≈53–64°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
74°60°20%⌄
Day≈69–80°
Night≈55–65°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
78°62°20%⌄
Day≈73–83°
Night≈57–68°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
75°60°19.0 mm⌄
Day≈70–81°
Night≈55–66°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
70°57°20%⌄
Day≈64–75°
Night≈52–63°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
65°55°20%⌄
Day≈60–71°
Night≈49–60°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
71°58°11.0 mm⌄
Day≈65–76°
Night≈53–63°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
73°59°20%⌄
Day≈68–78°
Night≈54–65°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
77°62°20%⌄
Day≈72–82°
Night≈56–67°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
74°60°10.0 mm⌄
Day≈69–80°
Night≈55–65°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
73°59°20%⌄
Day≈67–78°
Night≈54–64°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
70°58°20%⌄
Day≈65–76°
Night≈52–63°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
69°57°17.0 mm⌄
Day≈64–75°
Night≈51–62°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
68°56°20%⌄
Day≈63–74°
Night≈51–62°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
70°57°20%⌄
Day≈65–75°
Night≈52–63°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
76°61°14.0 mm⌄
Day≈71–82°
Night≈56–67°
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 Merton, 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.