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
108°
Tue, Sep 8
Coldest night
66°
Sat, Sep 12
Days with precip
0 / 14
of 14 forecast days
Nicest day
Fri, Sep 11
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
103° 79°
2% precip chance
Sat 12 – Sun 13 Sep
98° 66°
typical range
Sat 19 – Sun 20 Sep
98° 71°
typical range
Sat 26 – Sun 27 Sep
95° 68°
typical range
30 days — Union City
14 forecast + 16 climatology
Sun · Today Sunny
106°76°1%⌄
Wind17 mph SW
Gusts35 mph
UV index9 – Very high
Precip chance1%
Sunrise07:02
Sunset20:02
Mon · Tomorrow Sunny
101°77°0%⌄
Wind15 mph S
Gusts33 mph
UV index9 – Very high
Precip chance0%
Sunrise07:03
Sunset20:00
Tuesday 1/9 Sunny
102°80°1%⌄
Wind17 mph S
Gusts32 mph
UV index9 – Very high
Precip chance1%
Sunrise07:04
Sunset19:59
Wednesday 2/9 Sunny
98°73°1%⌄
Wind20 mph SE
Gusts32 mph
UV index10 – Very high
Precip chance1%
Sunrise07:04
Sunset19:57
Thursday 3/9 Sunny
101°73°4%⌄
Wind23 mph S
Gusts33 mph
UV index10 – Very high
Precip chance4%
Sunrise07:05
Sunset19:56
Friday 4/9 Sunny
102°73°2%⌄
Wind17 mph S
Gusts31 mph
UV index9 – Very high
Precip chance2%
Sunrise07:06
Sunset19:55
Saturday 5/9 Sunny
103°79°1%⌄
Wind16 mph S
Gusts28 mph
UV index9 – Very high
Precip chance1%
Sunrise07:07
Sunset19:53
Sunday 6/9 Sunny
101°81°2%⌄
Wind11 mph S
Gusts26 mph
UV index9 – Very high
Precip chance2%
Sunrise07:07
Sunset19:52
Monday 7/9 Mostly cloudy
104°83°4%⌄
Wind11 mph S
Gusts26 mph
UV index10 – Very high
Precip chance4%
Sunrise07:08
Sunset19:50
Tuesday 8/9 Mostly cloudy
108°84°7%⌄
Wind15 mph S
Gusts35 mph
UV index9 – Very high
Precip chance7%
Sunrise07:09
Sunset19:49
Wednesday 9/9 Sunny
101°78°0.6 mm⌄
Wind12 mph NE
Gusts25 mph
UV index9 – Very high
Precip chance36%
Sunrise07:10
Sunset19:48
Thursday 10/9 Sunny
102°77°0.6 mm⌄
Wind14 mph S
Gusts20 mph
UV index9 – Very high
Precip chance36%
Sunrise07:10
Sunset19:46
Friday 11/9 Sunny
91°73°1%⌄
Wind21 mph N
Gusts38 mph
UV index8 – Very high
Precip chance1%
Sunrise07:11
Sunset19:45
Saturday 12/9 Sunny
96°66°0%⌄
Wind13 mph S
Gusts24 mph
UV index9 – Very high
Precip chance0%
Sunrise07:12
Sunset19:43
Sunday 13/9 Light rain (climatological)
98°74°1.1 mm⌄
Day≈93–104°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
102°76°20%⌄
Day≈96–107°
Night≈70–81°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
103°76°20%⌄
Day≈97–108°
Night≈71–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Light rain (climatological)
98°73°0.8 mm⌄
Day≈93–103°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
95°72°20%⌄
Day≈90–101°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
89°68°20%⌄
Day≈83–94°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Light rain (climatological)
94°71°1.6 mm⌄
Day≈89–100°
Night≈66–76°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
98°74°20%⌄
Day≈93–104°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
97°73°20%⌄
Day≈92–103°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Light rain (climatological)
97°73°1.4 mm⌄
Day≈92–103°
Night≈68–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
98°73°20%⌄
Day≈92–103°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
91°69°20%⌄
Day≈86–97°
Night≈64–75°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Light rain (climatological)
89°68°0.9 mm⌄
Day≈83–94°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
90°68°20%⌄
Day≈84–95°
Night≈63–74°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
95°72°20%⌄
Day≈90–101°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Light rain (climatological)
99°74°1.5 mm⌄
Day≈93–104°
Night≈68–79°
Precip≈0.6 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.