Mount Zion · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Mount Zion & 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
36°
Tue, Aug 25
Coldest night
17°
Mon, Sep 7
Days with precip
6 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
30° 21°
84% precip chance
Sat 5 – Sun 6 Sep
32° 18°
57% precip chance
Sat 12 – Sun 13 Sep
26° 17°
typical range
Sat 19 – Sun 20 Sep
27° 18°
typical range
30 days — Mount Zion
14 forecast + 16 climatology
Tue · Today Sunny
36°18°3%⌄
Wind5 mph N
Gusts13 mph
UV index10 – Very high
Precip chance3%
Sunrise07:10
Sunset20:15
Wed · Tomorrow Sunny
32°22°3.7 mm⌄
Wind10 mph NW
Gusts18 mph
UV index8 – High
Precip chance60%
Sunrise07:10
Sunset20:14
Thursday 27/8 Showers
27°21°9.5 mm⌄
Wind7 mph SW
Gusts12 mph
UV index9 – Very high
Precip chance85%
Sunrise07:11
Sunset20:13
Friday 28/8 Mostly cloudy
31°22°19%⌄
Wind6 mph NW
Gusts16 mph
UV index7 – High
Precip chance19%
Sunrise07:12
Sunset20:11
Saturday 29/8 Showers
29°21°5.8 mm⌄
Wind5 mph SE
Gusts13 mph
UV index7 – High
Precip chance84%
Sunrise07:12
Sunset20:10
Sunday 30/8 Mostly cloudy
30°22°1.8 mm⌄
Wind6 mph S
Gusts20 mph
UV index6 – High
Precip chance68%
Sunrise07:13
Sunset20:09
Monday 31/8 Sunny
34°25°5%⌄
Wind4 mph W
Gusts11 mph
UV index8 – Very high
Precip chance5%
Sunrise07:14
Sunset20:08
Tuesday 1/9 Sunny
34°25°17%⌄
Wind6 mph W
Gusts9 mph
UV index8 – Very high
Precip chance17%
Sunrise07:14
Sunset20:06
Wednesday 2/9 Sunny
33°24°6%⌄
Wind12 mph NW
Gusts26 mph
UV index8 – Very high
Precip chance6%
Sunrise07:15
Sunset20:05
Thursday 3/9 Mostly cloudy
29°19°10%⌄
Wind11 mph NW
Gusts23 mph
UV index6 – High
Precip chance10%
Sunrise07:16
Sunset20:04
Friday 4/9 Partly cloudy
33°22°1.2 mm⌄
Wind12 mph W
Gusts26 mph
UV index7 – High
Precip chance57%
Sunrise07:16
Sunset20:02
Saturday 5/9 Sunny
32°22°2.1 mm⌄
Wind11 mph NW
Gusts25 mph
UV index8 – Very high
Precip chance57%
Sunrise07:17
Sunset20:01
Sunday 6/9 Sunny
28°18°3%⌄
Wind9 mph N
Gusts23 mph
UV index7 – High
Precip chance3%
Sunrise07:18
Sunset20:00
Monday 7/9 Mostly cloudy
29°17°9%⌄
Wind6 mph N
Gusts17 mph
UV index7 – High
Precip chance9%
Sunrise07:18
Sunset19:58
Tuesday 8/9 Rain (climatological)
29°20°5.5 mm⌄
Day≈26–32°
Night≈17–23°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
30°20°6.7 mm⌄
Day≈27–33°
Night≈17–23°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
28°19°6.4 mm⌄
Day≈25–31°
Night≈16–22°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
30°20°3.7 mm⌄
Day≈27–33°
Night≈17–23°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
27°18°20%⌄
Day≈24–30°
Night≈15–21°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
27°18°6.0 mm⌄
Day≈24–30°
Night≈15–21°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
30°20°5.8 mm⌄
Day≈27–33°
Night≈17–23°
Precip≈2.1 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 Mount Zion, 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.