Portsmouth Heights · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Portsmouth Heights & 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
38°
Thu, Sep 3
Coldest night
20°
Wed, Sep 9
Days with precip
5 / 14
of 14 forecast days
Nicest day
Sun, Sep 13
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
30° 21°
61% precip chance
Sat 12 – Sun 13 Sep
30° 23°
36% precip chance
Sat 19 – Sun 20 Sep
33° 22°
typical range
Sat 26 – Sun 27 Sep
34° 22°
typical range
30 days — Portsmouth Heights
14 forecast + 16 climatology
Wed · Today Sunny
38°25°0.5 mm⌄
Wind10 mph NE
Gusts26 mph
UV index8 – Very high
Precip chance36%
Sunrise06:37
Sunset19:32
Thu · Tomorrow Sunny
38°24°4.5 mm⌄
Wind15 mph SW
Gusts35 mph
UV index8 – Very high
Precip chance60%
Sunrise06:38
Sunset19:31
Friday 4/9 Sunny
38°23°3.0 mm⌄
Wind10 mph SW
Gusts30 mph
UV index9 – Very high
Precip chance58%
Sunrise06:39
Sunset19:30
Saturday 5/9 Mostly cloudy
30°24°1.5 mm⌄
Wind11 mph NE
Gusts23 mph
UV index8 – High
Precip chance61%
Sunrise06:39
Sunset19:28
Sunday 6/9 Sunny
27°21°1.1 mm⌄
Wind11 mph N
Gusts19 mph
UV index7 – High
Precip chance57%
Sunrise06:40
Sunset19:27
Monday 7/9 Mostly cloudy
29°21°12%⌄
Wind9 mph NE
Gusts20 mph
UV index7 – High
Precip chance12%
Sunrise06:41
Sunset19:25
Tuesday 8/9 Mostly cloudy
31°21°0.9 mm⌄
Wind12 mph SW
Gusts25 mph
UV index7 – High
Precip chance57%
Sunrise06:42
Sunset19:24
Wednesday 9/9 Showers
23°20°3.3 mm⌄
Wind11 mph NE
Gusts30 mph
UV index5 – Moderate
Precip chance81%
Sunrise06:43
Sunset19:22
Thursday 10/9 Sunny
29°20°7%⌄
Wind10 mph S
Gusts25 mph
UV index7 – High
Precip chance7%
Sunrise06:43
Sunset19:21
Friday 11/9 Sunny
37°23°5%⌄
Wind13 mph SW
Gusts31 mph
UV index9 – Very high
Precip chance5%
Sunrise06:44
Sunset19:19
Saturday 12/9 Sunny
30°24°0.6 mm⌄
Wind12 mph N
Gusts27 mph
UV index7 – High
Precip chance36%
Sunrise06:45
Sunset19:18
Sunday 13/9 Mostly cloudy
27°23°11%⌄
Wind9 mph E
Gusts16 mph
UV index7 – High
Precip chance11%
Sunrise06:46
Sunset19:16
Monday 14/9 Sunny
34°24°8%⌄
Wind12 mph SW
Gusts32 mph
UV index8 – Very high
Precip chance8%
Sunrise06:47
Sunset19:15
Tuesday 15/9 Sunny
27°21°0.6 mm⌄
Wind13 mph N
Gusts32 mph
UV index7 – High
Precip chance38%
Sunrise06:47
Sunset19:13
Wednesday 16/9 Rain (climatological)
31°22°3.5 mm⌄
Day≈28–34°
Night≈19–25°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
35°24°20%⌄
Day≈32–38°
Night≈21–27°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
35°24°20%⌄
Day≈32–38°
Night≈21–27°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
33°23°4.0 mm⌄
Day≈30–36°
Night≈20–26°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
31°22°20%⌄
Day≈28–34°
Night≈19–25°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
28°21°20%⌄
Day≈25–31°
Night≈18–24°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
29°21°4.4 mm⌄
Day≈26–32°
Night≈18–24°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
33°23°20%⌄
Day≈30–36°
Night≈20–26°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
34°24°20%⌄
Day≈31–37°
Night≈21–27°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
33°23°2.6 mm⌄
Day≈30–36°
Night≈20–26°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
34°24°20%⌄
Day≈31–37°
Night≈21–27°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
31°22°20%⌄
Day≈28–34°
Night≈19–25°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
29°21°2.3 mm⌄
Day≈26–32°
Night≈18–24°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
30°22°20%⌄
Day≈27–33°
Night≈19–25°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
30°22°20%⌄
Day≈27–33°
Night≈19–25°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
26°18°2.7 mm⌄
Day≈23–29°
Night≈15–21°
Precip≈1.4 in / October
(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 Portsmouth Heights, 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.