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
90°
Tue, Sep 1
Coldest night
54°
Tue, Sep 8
Days with precip
9 / 14
of 14 forecast days
Nicest day
Thu, Aug 27
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
86° 65°
63% precip chance
Sat 5 – Sun 6 Sep
80° 62°
73% precip chance
Sat 12 – Sun 13 Sep
74° 56°
typical range
Sat 19 – Sun 20 Sep
72° 56°
typical range
30 days — Merton
14 forecast + 16 climatology
Wed · Today Mostly cloudy
86°64°8.8 mm⌄
Wind17 mph W
Gusts29 mph
UV index7 – High
Precip chance75%
Sunrise06:11
Sunset19:39
Thu · Tomorrow Sunny
78°59°5%⌄
Wind11 mph NW
Gusts20 mph
UV index7 – High
Precip chance5%
Sunrise06:12
Sunset19:37
Friday 28/8 Sunny
80°59°9%⌄
Wind10 mph SW
Gusts21 mph
UV index7 – High
Precip chance9%
Sunrise06:13
Sunset19:35
Saturday 29/8 Mostly cloudy
77°65°1.2 mm⌄
Wind16 mph SW
Gusts33 mph
UV index6 – High
Precip chance60%
Sunrise06:14
Sunset19:33
Sunday 30/8 Showers
86°67°1.5 mm⌄
Wind19 mph SW
Gusts43 mph
UV index7 – High
Precip chance63%
Sunrise06:15
Sunset19:32
Monday 31/8 Showers
89°69°3.3 mm⌄
Wind16 mph SW
Gusts37 mph
UV index7 – High
Precip chance72%
Sunrise06:16
Sunset19:30
Tuesday 1/9 Mostly cloudy
90°74°0.1 mm⌄
Wind20 mph SW
Gusts46 mph
UV index8 – Very high
Precip chance17%
Sunrise06:17
Sunset19:28
Wednesday 2/9 Showers
75°66°6.5 mm⌄
Wind9 mph E
Gusts13 mph
UV index5 – Moderate
Precip chance86%
Sunrise06:18
Sunset19:27
Thursday 3/9 Mostly cloudy
74°65°25%⌄
Wind11 mph E
Gusts17 mph
UV index6 – High
Precip chance25%
Sunrise06:19
Sunset19:25
Friday 4/9 Showers
80°66°1.1 mm⌄
Wind11 mph E
Gusts20 mph
UV index7 – High
Precip chance57%
Sunrise06:20
Sunset19:23
Saturday 5/9 Sunny
80°65°15.6 mm⌄
Wind13 mph NW
Gusts18 mph
UV index7 – High
Precip chance73%
Sunrise06:22
Sunset19:21
Sunday 6/9 Mostly cloudy
80°62°10%⌄
Wind11 mph S
Gusts13 mph
UV index6 – High
Precip chance10%
Sunrise06:23
Sunset19:20
Monday 7/9 Showers
73°65°8.3 mm⌄
Wind8 mph N
Gusts19 mph
UV index5 – Moderate
Precip chance91%
Sunrise06:24
Sunset19:18
Tuesday 8/9 Mostly cloudy
65°54°3.6 mm⌄
Wind15 mph N
Gusts28 mph
UV index4 – Moderate
Precip chance80%
Sunrise06:25
Sunset19:16
Wednesday 9/9 Rain (climatological)
71°57°5.8 mm⌄
Day≈65–76°
Night≈51–62°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
74°58°20%⌄
Day≈68–79°
Night≈53–64°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈72–83°
Night≈55–66°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
74°59°13.7 mm⌄
Day≈69–80°
Night≈53–64°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–74°
Night≈50–61°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
64°53°20%⌄
Day≈59–70°
Night≈47–58°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
70°56°7.9 mm⌄
Day≈65–76°
Night≈51–62°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
72°58°20%⌄
Day≈67–78°
Night≈52–63°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
76°60°20%⌄
Day≈71–82°
Night≈55–65°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
73°58°7.2 mm⌄
Day≈68–79°
Night≈53–64°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
72°57°20%⌄
Day≈67–77°
Night≈52–63°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–75°
Night≈51–61°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
69°55°12.2 mm⌄
Day≈63–74°
Night≈50–61°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
67°55°20%⌄
Day≈62–73°
Night≈49–60°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–75°
Night≈50–61°
Precip≈4.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
76°60°10.1 mm⌄
Day≈70–81°
Night≈54–65°
Precip≈4.3 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.