Twain Harte · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Twain Harte & 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
91°
Thu, Sep 10
Coldest night
52°
Sat, Sep 5
Days with precip
0 / 14
of 14 forecast days
Nicest day
Sat, Sep 5
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
85° 61°
1% precip chance
Sat 5 – Sun 6 Sep
81° 52°
1% precip chance
Sat 12 – Sun 13 Sep
80° 55°
typical range
Sat 19 – Sun 20 Sep
83° 55°
typical range
30 days — Twain Harte
14 forecast + 16 climatology
Fri · Today Mostly cloudy
80°64°0.9 mm⌄
Wind9 mph SW
Gusts18 mph
UV index6 – High
Precip chance40%
Sunrise06:27
Sunset19:36
Sat · Tomorrow Sunny
85°63°1%⌄
Wind10 mph SW
Gusts17 mph
UV index7 – High
Precip chance1%
Sunrise06:28
Sunset19:35
Sunday 30/8 Sunny
84°61°1%⌄
Wind9 mph SW
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise06:29
Sunset19:34
Monday 31/8 Sunny
82°60°0%⌄
Wind12 mph SW
Gusts18 mph
UV index7 – High
Precip chance0%
Sunrise06:30
Sunset19:32
Tuesday 1/9 Sunny
80°54°0%⌄
Wind11 mph SW
Gusts19 mph
UV index7 – High
Precip chance0%
Sunrise06:30
Sunset19:31
Wednesday 2/9 Sunny
82°57°0%⌄
Wind9 mph SW
Gusts16 mph
UV index7 – High
Precip chance0%
Sunrise06:31
Sunset19:29
Thursday 3/9 Sunny
82°60°0%⌄
Wind9 mph SW
Gusts19 mph
UV index7 – High
Precip chance0%
Sunrise06:32
Sunset19:28
Friday 4/9 Sunny
77°55°0%⌄
Wind10 mph SW
Gusts17 mph
UV index7 – High
Precip chance0%
Sunrise06:33
Sunset19:26
Saturday 5/9 Sunny
75°52°1%⌄
Wind9 mph SW
Gusts18 mph
UV index6 – High
Precip chance1%
Sunrise06:34
Sunset19:25
Sunday 6/9 Sunny
81°55°1%⌄
Wind10 mph SW
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise06:35
Sunset19:23
Monday 7/9 Sunny
86°59°0%⌄
Wind10 mph SW
Gusts21 mph
UV index8 – Very high
Precip chance0%
Sunrise06:36
Sunset19:22
Tuesday 8/9 Sunny
87°62°0%⌄
Wind9 mph SW
Gusts18 mph
UV index8 – Very high
Precip chance0%
Sunrise06:36
Sunset19:20
Wednesday 9/9 Sunny
87°63°2%⌄
Wind10 mph W
Gusts17 mph
UV index8 – Very high
Precip chance2%
Sunrise06:37
Sunset19:18
Thursday 10/9 Sunny
91°65°0%⌄
Wind9 mph W
Gusts20 mph
UV index8 – Very high
Precip chance0%
Sunrise06:38
Sunset19:17
Friday 11/9 Light rain (climatological)
74°53°1.0 mm⌄
Day≈69–80°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
78°55°20%⌄
Day≈73–84°
Night≈50–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
80°56°20%⌄
Day≈74–85°
Night≈51–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
79°56°1.9 mm⌄
Day≈74–85°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
76°54°20%⌄
Day≈71–82°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
72°51°20%⌄
Day≈66–77°
Night≈46–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
70°50°1.2 mm⌄
Day≈65–76°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
75°53°20%⌄
Day≈69–80°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
79°55°20%⌄
Day≈74–84°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
83°58°1.1 mm⌄
Day≈77–88°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
77°54°20%⌄
Day≈71–82°
Night≈49–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
73°52°20%⌄
Day≈68–79°
Night≈47–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
71°50°1.6 mm⌄
Day≈65–76°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
71°51°20%⌄
Day≈65–76°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
75°53°20%⌄
Day≈70–80°
Night≈48–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
81°56°1.3 mm⌄
Day≈75–86°
Night≈51–62°
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 Twain Harte, 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.