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
100°
Mon, Aug 31
Coldest night
65°
Mon, Sep 7
Days with precip
5 / 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
91° 71°
60% precip chance
Sat 5 – Sun 6 Sep
95° 65°
57% precip chance
Sat 12 – Sun 13 Sep
85° 66°
typical range
Sat 19 – Sun 20 Sep
87° 65°
typical range
30 days — Mount Zion
14 forecast + 16 climatology
Tue · Today Sunny
95°69°0.2 mm⌄
Wind10 mph S
Gusts19 mph
UV index9 – Very high
Precip chance17%
Sunrise07:01
Sunset20:06
Wed · Tomorrow Sunny
98°71°3.3 mm⌄
Wind6 mph S
Gusts18 mph
UV index9 – Very high
Precip chance57%
Sunrise07:02
Sunset20:05
Thursday 27/8 Mostly cloudy
87°71°3.0 mm⌄
Wind7 mph W
Gusts12 mph
UV index5 – Moderate
Precip chance76%
Sunrise07:03
Sunset20:04
Friday 28/8 Mostly cloudy
88°72°0.6 mm⌄
Wind8 mph S
Gusts11 mph
UV index7 – High
Precip chance45%
Sunrise07:03
Sunset20:03
Saturday 29/8 Mostly cloudy
88°71°0.9 mm⌄
Wind7 mph SE
Gusts18 mph
UV index7 – High
Precip chance60%
Sunrise07:04
Sunset20:01
Sunday 30/8 Mostly cloudy
91°73°0.3 mm⌄
Wind6 mph E
Gusts15 mph
UV index7 – High
Precip chance32%
Sunrise07:05
Sunset20:00
Monday 31/8 Sunny
100°78°2.1 mm⌄
Wind7 mph E
Gusts14 mph
UV index9 – Very high
Precip chance57%
Sunrise07:05
Sunset19:59
Tuesday 1/9 Sunny
99°78°5%⌄
Wind6 mph W
Gusts22 mph
UV index9 – Very high
Precip chance5%
Sunrise07:06
Sunset19:58
Wednesday 2/9 Sunny
96°79°6%⌄
Wind10 mph W
Gusts24 mph
UV index8 – Very high
Precip chance6%
Sunrise07:07
Sunset19:56
Thursday 3/9 Mostly cloudy
92°68°6%⌄
Wind13 mph NW
Gusts18 mph
UV index7 – High
Precip chance6%
Sunrise07:07
Sunset19:55
Friday 4/9 Mostly cloudy
95°72°8%⌄
Wind9 mph N
Gusts21 mph
UV index8 – Very high
Precip chance8%
Sunrise07:08
Sunset19:54
Saturday 5/9 Showers
95°74°1.0 mm⌄
Wind12 mph NW
Gusts23 mph
UV index9 – Very high
Precip chance57%
Sunrise07:09
Sunset19:52
Sunday 6/9 Sunny
86°65°1%⌄
Wind9 mph NE
Gusts22 mph
UV index7 – High
Precip chance1%
Sunrise07:09
Sunset19:51
Monday 7/9 Mostly cloudy
88°65°7%⌄
Wind5 mph NE
Gusts14 mph
UV index7 – High
Precip chance7%
Sunrise07:10
Sunset19:50
Tuesday 8/9 Rain (climatological)
86°67°2.8 mm⌄
Day≈81–91°
Night≈62–72°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
91°70°20%⌄
Day≈86–97°
Night≈65–76°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
91°70°20%⌄
Day≈86–96°
Night≈65–75°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
92°70°2.6 mm⌄
Day≈86–97°
Night≈65–76°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
85°66°20%⌄
Day≈80–90°
Night≈61–72°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
84°66°20%⌄
Day≈79–89°
Night≈60–71°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
84°66°2.4 mm⌄
Day≈79–90°
Night≈61–71°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈84–95°
Night≈64–74°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
94°72°20%⌄
Day≈88–99°
Night≈66–77°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
92°70°1.6 mm⌄
Day≈86–97°
Night≈65–76°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
90°69°20%⌄
Day≈85–96°
Night≈64–75°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
87°67°20%⌄
Day≈81–92°
Night≈62–73°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
84°65°1.3 mm⌄
Day≈78–89°
Night≈60–71°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
82°64°20%⌄
Day≈76–87°
Night≈59–70°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈84–95°
Night≈64–74°
Precip≈1.0 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
91°70°2.7 mm⌄
Day≈85–96°
Night≈64–75°
Precip≈1.0 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.