Mountain Top · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Mountain Top & 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
29°
Thu, Sep 3
Coldest night
12°
Mon, Sep 7
Days with precip
7 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
23° 14°
14% precip chance
Sat 12 – Sun 13 Sep
27° 15°
12% precip chance
Sat 19 – Sun 20 Sep
17° 9°
typical range
Sat 26 – Sun 27 Sep
16° 9°
typical range
30 days — Mountain Top
14 forecast + 16 climatology
Mon · Today Showers
24°18°41.3 mm⌄
Wind5 mph SW
Gusts11 mph
UV index6 – Moderate
Precip chance90%
Sunrise06:29
Sunset19:38
Tue · Tomorrow Showers
28°19°22.5 mm⌄
Wind9 mph W
Gusts16 mph
UV index6 – High
Precip chance91%
Sunrise06:30
Sunset19:36
Wednesday 2/9 Fog
20°18°13.9 mm⌄
Wind6 mph SE
Gusts18 mph
UV index2 – Low
Precip chance95%
Sunrise06:31
Sunset19:35
Thursday 3/9 Showers
29°18°29.3 mm⌄
Wind10 mph W
Gusts24 mph
UV index8 – High
Precip chance90%
Sunrise06:32
Sunset19:33
Friday 4/9 Mostly cloudy
26°18°1.8 mm⌄
Wind9 mph N
Gusts16 mph
UV index6 – Moderate
Precip chance71%
Sunrise06:33
Sunset19:31
Saturday 5/9 Sunny
23°14°9%⌄
Wind8 mph N
Gusts13 mph
UV index6 – High
Precip chance9%
Sunrise06:34
Sunset19:30
Sunday 6/9 Fog
23°14°14%⌄
Wind6 mph N
Gusts9 mph
UV index6 – High
Precip chance14%
Sunrise06:35
Sunset19:28
Monday 7/9 Mostly cloudy
23°12°11%⌄
Wind3 mph E
Gusts14 mph
UV index6 – High
Precip chance11%
Sunrise06:36
Sunset19:26
Tuesday 8/9 Mostly cloudy
21°13°1.1 mm⌄
Wind8 mph S
Gusts25 mph
UV index5 – Moderate
Precip chance66%
Sunrise06:37
Sunset19:25
Wednesday 9/9 Showers
17°14°66.1 mm⌄
Wind10 mph SE
Gusts26 mph
UV index4 – Moderate
Precip chance94%
Sunrise06:38
Sunset19:23
Thursday 10/9 Mostly cloudy
20°13°16%⌄
Wind11 mph NE
Gusts25 mph
UV index5 – Moderate
Precip chance16%
Sunrise06:39
Sunset19:21
Friday 11/9 Sunny
24°13°11%⌄
Wind9 mph NE
Gusts23 mph
UV index6 – High
Precip chance11%
Sunrise06:40
Sunset19:20
Saturday 12/9 Mostly cloudy
24°15°12%⌄
Wind7 mph NE
Gusts15 mph
UV index6 – High
Precip chance12%
Sunrise06:41
Sunset19:18
Sunday 13/9 Sunny
27°15°8%⌄
Wind4 mph N
Gusts11 mph
UV index7 – High
Precip chance8%
Sunrise06:42
Sunset19:16
Monday 14/9 Rain (climatological)
21°12°32.0 mm⌄
Day≈18–24°
Night≈9–15°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
22°13°20%⌄
Day≈19–25°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
22°13°20%⌄
Day≈19–25°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
21°13°35.0 mm⌄
Day≈18–24°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
17°10°20%⌄
Day≈14–20°
Night≈7–13°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
16°9°20%⌄
Day≈13–19°
Night≈6–12°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
17°10°24.0 mm⌄
Day≈14–20°
Night≈7–13°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
19°11°20%⌄
Day≈16–22°
Night≈8–14°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
22°13°37.0 mm⌄
Day≈19–25°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
21°13°20%⌄
Day≈18–24°
Night≈10–16°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
19°11°20%⌄
Day≈16–22°
Night≈8–14°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
16°9°38.0 mm⌄
Day≈13–19°
Night≈6–12°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
16°10°20%⌄
Day≈13–19°
Night≈7–13°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
19°11°20%⌄
Day≈16–22°
Night≈8–14°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
21°13°30.0 mm⌄
Day≈18–24°
Night≈10–16°
Precip≈11.8 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 Mountain Top, 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.