South Terwillegar · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
South Terwillegar & 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
25°
Wed, Sep 2
Coldest night
3°
Sat, Sep 5
Days with precip
5 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
18° 3°
57% precip chance
Sat 12 – Sun 13 Sep
12° 4°
54% precip chance
Sat 19 – Sun 20 Sep
15° 7°
typical range
Sat 26 – Sun 27 Sep
15° 7°
typical range
30 days — South Terwillegar
14 forecast + 16 climatology
Tue · Today Mostly cloudy
23°12°8%⌄
Wind16 mph SE
Gusts35 mph
UV index5 – Moderate
Precip chance8%
Sunrise06:44
Sunset20:25
Wed · Tomorrow Mostly cloudy
25°13°14%⌄
Wind13 mph SE
Gusts33 mph
UV index3 – Moderate
Precip chance14%
Sunrise06:46
Sunset20:22
Thursday 3/9 Showers
20°12°5.1 mm⌄
Wind13 mph SE
Gusts32 mph
UV index2 – Low
Precip chance80%
Sunrise06:48
Sunset20:20
Friday 4/9 Showers
11°4°2.8 mm⌄
Wind21 mph W
Gusts35 mph
UV index3 – Moderate
Precip chance82%
Sunrise06:49
Sunset20:18
Saturday 5/9 Showers
12°3°0.7 mm⌄
Wind15 mph NW
Gusts24 mph
UV index4 – Moderate
Precip chance57%
Sunrise06:51
Sunset20:15
Sunday 6/9 Mostly cloudy
18°6°14%⌄
Wind8 mph SE
Gusts18 mph
UV index4 – Moderate
Precip chance14%
Sunrise06:53
Sunset20:13
Monday 7/9 Mostly cloudy
19°10°13%⌄
Wind11 mph SE
Gusts24 mph
UV index5 – Moderate
Precip chance13%
Sunrise06:55
Sunset20:10
Tuesday 8/9 Sunny
18°10°1.4 mm⌄
Wind18 mph NW
Gusts35 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:56
Sunset20:08
Wednesday 9/9 Showers
16°11°2.4 mm⌄
Wind12 mph W
Gusts18 mph
UV index3 – Moderate
Precip chance72%
Sunrise06:58
Sunset20:06
Thursday 10/9 Mostly cloudy
13°8°0.6 mm⌄
Wind11 mph NW
Gusts14 mph
UV index4 – Moderate
Precip chance45%
Sunrise07:00
Sunset20:03
Friday 11/9 Showers
12°5°0.7 mm⌄
Wind12 mph NW
Gusts19 mph
UV index2 – Low
Precip chance60%
Sunrise07:01
Sunset20:01
Saturday 12/9 Mostly cloudy
11°4°21%⌄
Wind5 mph W
Gusts10 mph
UV index3 – Moderate
Precip chance21%
Sunrise07:03
Sunset19:58
Sunday 13/9 Mostly cloudy
12°5°0.8 mm⌄
Wind10 mph E
Gusts17 mph
UV index3 – Moderate
Precip chance54%
Sunrise07:05
Sunset19:56
Monday 14/9 Mostly cloudy
16°9°0.1 mm⌄
Wind12 mph W
Gusts19 mph
UV index4 – Moderate
Precip chance18%
Sunrise07:07
Sunset19:53
Tuesday 15/9 Rain (climatological)
17°8°4.3 mm⌄
Day≈14–20°
Night≈5–11°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
17°9°20%⌄
Day≈14–20°
Night≈6–12°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
19°10°20%⌄
Day≈16–22°
Night≈7–13°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
16°8°2.7 mm⌄
Day≈13–19°
Night≈5–11°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
14°7°20%⌄
Day≈11–17°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
15°7°20%⌄
Day≈12–18°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
15°7°3.4 mm⌄
Day≈12–18°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
17°8°20%⌄
Day≈14–20°
Night≈5–11°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
17°8°20%⌄
Day≈14–20°
Night≈5–11°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
17°9°2.7 mm⌄
Day≈14–20°
Night≈6–12°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
17°9°20%⌄
Day≈14–20°
Night≈6–12°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
15°7°20%⌄
Day≈12–18°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Light rain (climatological)
15°7°1.8 mm⌄
Day≈12–18°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
14°7°20%⌄
Day≈11–17°
Night≈4–10°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
17°8°20%⌄
Day≈14–20°
Night≈5–11°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
19°9°2.9 mm⌄
Day≈16–22°
Night≈6–12°
Precip≈1.3 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 South Terwillegar, 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.