Union City · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Union City & 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
101°
Mon, Aug 17
Coldest night
71°
Mon, Aug 24
Days with precip
8 / 14
of 14 forecast days
Nicest day
Thu, Aug 13
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 15 – Sun 16 Aug
99° 75°
57% precip chance
Sat 22 – Sun 23 Aug
95° 72°
78% precip chance
Sat 29 – Sun 30 Aug
101° 76°
typical range
Sat 5 – Sun 6 Sep
94° 70°
typical range
30 days — Union City
14 forecast + 16 climatology
Thu · Today Sunny
100°75°4%⌄
Wind9 mph W
Gusts10 mph
UV index10 – Very high
Precip chance4%
Sunrise06:59
Sunset20:27
Fri · Tomorrow Sunny
97°75°1.0 mm⌄
Wind9 mph W
Gusts12 mph
UV index10 – Very high
Precip chance36%
Sunrise06:59
Sunset20:25
Saturday 15/8 Sunny
98°76°2.8 mm⌄
Wind9 mph SW
Gusts15 mph
UV index10 – Very high
Precip chance57%
Sunrise07:00
Sunset20:24
Sunday 16/8 Sunny
99°75°2.9 mm⌄
Wind8 mph NW
Gusts12 mph
UV index10 – Very high
Precip chance57%
Sunrise07:01
Sunset20:23
Monday 17/8 Sunny
101°76°0.4 mm⌄
Wind9 mph W
Gusts13 mph
UV index10 – Very high
Precip chance36%
Sunrise07:01
Sunset20:22
Tuesday 18/8 Sunny
99°78°2.0 mm⌄
Wind12 mph W
Gusts19 mph
UV index9 – Very high
Precip chance57%
Sunrise07:02
Sunset20:21
Wednesday 19/8 Sunny
100°77°3%⌄
Wind9 mph NW
Gusts10 mph
UV index9 – Very high
Precip chance3%
Sunrise07:03
Sunset20:20
Thursday 20/8 Sunny
98°74°11.3 mm⌄
Wind18 mph SE
Gusts27 mph
UV index9 – Very high
Precip chance61%
Sunrise07:04
Sunset20:19
Friday 21/8 Sunny
97°74°0.1 mm⌄
Wind5 mph SW
Gusts10 mph
UV index9 – Very high
Precip chance17%
Sunrise07:04
Sunset20:17
Saturday 22/8 Sunny
95°74°15.1 mm⌄
Wind8 mph W
Gusts13 mph
UV index8 – Very high
Precip chance67%
Sunrise07:05
Sunset20:16
Sunday 23/8 Showers
89°72°17.2 mm⌄
Wind9 mph SW
Gusts11 mph
UV index8 – Very high
Precip chance78%
Sunrise07:06
Sunset20:15
Monday 24/8 Partly cloudy
91°71°0.5 mm⌄
Wind4 mph W
Gusts8 mph
UV index8 – Very high
Precip chance36%
Sunrise07:06
Sunset20:14
Tuesday 25/8 Showers
92°74°4.2 mm⌄
Wind5 mph SW
Gusts6 mph
UV index8 – Very high
Precip chance68%
Sunrise07:07
Sunset20:13
Wednesday 26/8 Showers
94°73°3.5 mm⌄
Wind3 mph NW
Gusts6 mph
UV index8 – Very high
Precip chance64%
Sunrise07:08
Sunset20:11
Thursday 27/8 Rain (climatological)
96°74°6.6 mm⌄
Day≈91–101°
Night≈69–80°
Precip≈5.2 in / August
(climatological)Typical range for these dates · 1991–2020
Friday 28/8 Partly cloudy (climatological)
102°78°20%⌄
Day≈96–107°
Night≈72–83°
Precip≈5.2 in / August
(climatological)Typical range for these dates · 1991–2020
Saturday 29/8 Partly cloudy (climatological)
101°77°20%⌄
Day≈96–107°
Night≈72–83°
Precip≈5.2 in / August
(climatological)Typical range for these dates · 1991–2020
Sunday 30/8 Rain (climatological)
99°76°14.5 mm⌄
Day≈93–104°
Night≈70–81°
Precip≈5.2 in / August
(climatological)Typical range for these dates · 1991–2020
Monday 31/8 Partly cloudy (climatological)
95°73°20%⌄
Day≈89–100°
Night≈68–79°
Precip≈5.2 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
87°67°20%⌄
Day≈81–92°
Night≈62–73°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Rain (climatological)
87°68°13.6 mm⌄
Day≈82–92°
Night≈62–73°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈84–95°
Night≈64–74°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
97°74°20%⌄
Day≈92–103°
Night≈69–79°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Rain (climatological)
94°72°13.2 mm⌄
Day≈88–99°
Night≈66–77°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
91°70°20%⌄
Day≈85–96°
Night≈65–76°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
88°69°20%⌄
Day≈83–94°
Night≈63–74°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Rain (climatological)
85°67°16.7 mm⌄
Day≈80–91°
Night≈61–72°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
86°67°20%⌄
Day≈80–91°
Night≈62–72°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
91°70°20%⌄
Day≈85–96°
Night≈64–75°
Precip≈5.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
96°73°11.4 mm⌄
Day≈91–101°
Night≈68–78°
Precip≈5.2 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 Union City, 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.