Welch · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Welch & 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
85°
Sun, Aug 30
Coldest night
47°
Sun, Sep 6
Days with precip
6 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
85° 63°
9% precip chance
Sat 5 – Sun 6 Sep
65° 47°
76% precip chance
Sat 12 – Sun 13 Sep
67° 50°
typical range
Sat 19 – Sun 20 Sep
67° 52°
typical range
30 days — Welch
14 forecast + 16 climatology
Tue · Today Sunny
84°51°4%⌄
Wind4 mph E
Gusts15 mph
UV index9 – Very high
Precip chance4%
Sunrise06:51
Sunset20:05
Wed · Tomorrow Mostly cloudy
82°61°11%⌄
Wind8 mph W
Gusts15 mph
UV index8 – Very high
Precip chance11%
Sunrise06:51
Sunset20:04
Thursday 27/8 Sunny
81°65°4.4 mm⌄
Wind6 mph W
Gusts15 mph
UV index9 – Very high
Precip chance68%
Sunrise06:52
Sunset20:03
Friday 28/8 Fog
81°63°1.2 mm⌄
Wind6 mph NW
Gusts15 mph
UV index7 – High
Precip chance57%
Sunrise06:53
Sunset20:01
Saturday 29/8 Sunny
82°63°9%⌄
Wind7 mph NW
Gusts16 mph
UV index7 – High
Precip chance9%
Sunrise06:54
Sunset20:00
Sunday 30/8 Mostly cloudy
85°68°9%⌄
Wind8 mph W
Gusts15 mph
UV index7 – High
Precip chance9%
Sunrise06:55
Sunset19:58
Monday 31/8 Mostly cloudy
81°71°1.0 mm⌄
Wind7 mph NW
Gusts15 mph
UV index7 – High
Precip chance56%
Sunrise06:56
Sunset19:57
Tuesday 1/9 Fog
84°70°5.3 mm⌄
Wind16 mph W
Gusts34 mph
UV index6 – High
Precip chance77%
Sunrise06:56
Sunset19:55
Wednesday 2/9 Sunny
70°58°2.5 mm⌄
Wind10 mph NW
Gusts16 mph
UV index6 – High
Precip chance63%
Sunrise06:57
Sunset19:54
Thursday 3/9 Fog
61°51°22%⌄
Wind9 mph NW
Gusts14 mph
UV index5 – Moderate
Precip chance22%
Sunrise06:58
Sunset19:52
Friday 4/9 Mostly cloudy
66°55°2.7 mm⌄
Wind5 mph NW
Gusts16 mph
UV index4 – Moderate
Precip chance80%
Sunrise06:59
Sunset19:51
Saturday 5/9 Fog
63°51°2.3 mm⌄
Wind9 mph NW
Gusts16 mph
UV index4 – Moderate
Precip chance76%
Sunrise07:00
Sunset19:49
Sunday 6/9 Sunny
65°47°13%⌄
Wind11 mph N
Gusts12 mph
UV index5 – Moderate
Precip chance13%
Sunrise07:01
Sunset19:48
Monday 7/9 Fog
68°52°11%⌄
Wind7 mph NW
Gusts13 mph
UV index5 – Moderate
Precip chance11%
Sunrise07:01
Sunset19:46
Tuesday 8/9 Rain (climatological)
71°55°2.7 mm⌄
Day≈65–76°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
75°57°20%⌄
Day≈69–80°
Night≈52–63°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
73°56°20%⌄
Day≈67–78°
Night≈50–61°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
70°54°3.1 mm⌄
Day≈65–76°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
67°53°20%⌄
Day≈62–73°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
62°50°20%⌄
Day≈57–68°
Night≈44–55°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
64°51°3.1 mm⌄
Day≈59–69°
Night≈45–56°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
66°52°20%⌄
Day≈61–72°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
73°56°20%⌄
Day≈68–78°
Night≈51–62°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
74°57°2.1 mm⌄
Day≈69–80°
Night≈51–62°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
73°56°20%⌄
Day≈67–78°
Night≈50–61°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
67°52°20%⌄
Day≈61–72°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
66°52°2.7 mm⌄
Day≈61–71°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
64°51°20%⌄
Day≈59–69°
Night≈45–56°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
71°55°20%⌄
Day≈66–76°
Night≈49–60°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
75°57°3.6 mm⌄
Day≈69–80°
Night≈52–63°
Precip≈1.7 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 Welch, 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.