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
103°
Thu, Sep 3
Coldest night
63°
Sun, Sep 13
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sat, Sep 12
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
86° 71°
17% precip chance
Sat 12 – Sun 13 Sep
87° 63°
4% precip chance
Sat 19 – Sun 20 Sep
96° 71°
typical range
Sat 26 – Sun 27 Sep
93° 72°
typical range
30 days — Portsmouth Heights
14 forecast + 16 climatology
Thu · Today Sunny
103°74°11%⌄
Wind10 mph S
Gusts24 mph
UV index8 – Very high
Precip chance11%
Sunrise06:38
Sunset19:31
Fri · Tomorrow Sunny
102°74°1.8 mm⌄
Wind21 mph NE
Gusts33 mph
UV index9 – Very high
Precip chance57%
Sunrise06:39
Sunset19:30
Saturday 5/9 Mostly cloudy
86°75°11%⌄
Wind11 mph N
Gusts32 mph
UV index8 – High
Precip chance11%
Sunrise06:39
Sunset19:28
Sunday 6/9 Sunny
82°71°0.1 mm⌄
Wind12 mph NE
Gusts23 mph
UV index8 – High
Precip chance17%
Sunrise06:40
Sunset19:27
Monday 7/9 Sunny
80°67°5%⌄
Wind11 mph NE
Gusts21 mph
UV index7 – High
Precip chance5%
Sunrise06:41
Sunset19:25
Tuesday 8/9 Sunny
84°64°4%⌄
Wind10 mph SE
Gusts19 mph
UV index7 – High
Precip chance4%
Sunrise06:42
Sunset19:24
Wednesday 9/9 Mostly cloudy
88°66°10%⌄
Wind11 mph S
Gusts28 mph
UV index7 – High
Precip chance10%
Sunrise06:43
Sunset19:22
Thursday 10/9 Mostly cloudy
93°72°0.4 mm⌄
Wind13 mph SW
Gusts32 mph
UV index8 – Very high
Precip chance36%
Sunrise06:43
Sunset19:21
Friday 11/9 Sunny
85°73°1.5 mm⌄
Wind13 mph N
Gusts32 mph
UV index7 – High
Precip chance57%
Sunrise06:44
Sunset19:19
Saturday 12/9 Sunny
78°65°4%⌄
Wind10 mph NE
Gusts18 mph
UV index7 – High
Precip chance4%
Sunrise06:45
Sunset19:18
Sunday 13/9 Sunny
87°63°2%⌄
Wind9 mph SE
Gusts23 mph
UV index8 – Very high
Precip chance2%
Sunrise06:46
Sunset19:16
Monday 14/9 Sunny
95°67°4%⌄
Wind13 mph S
Gusts26 mph
UV index8 – Very high
Precip chance4%
Sunrise06:47
Sunset19:15
Tuesday 15/9 Sunny
99°73°0.1 mm⌄
Wind14 mph SW
Gusts30 mph
UV index9 – Very high
Precip chance17%
Sunrise06:47
Sunset19:13
Wednesday 16/9 Sunny
89°72°2%⌄
Wind13 mph W
Gusts21 mph
UV index8 – Very high
Precip chance2%
Sunrise06:48
Sunset19:12
Thursday 17/9 Light rain (climatological)
90°70°1.5 mm⌄
Day≈84–95°
Night≈65–75°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
95°73°20%⌄
Day≈90–101°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
96°74°20%⌄
Day≈90–101°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
92°71°1.7 mm⌄
Day≈86–97°
Night≈66–76°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
89°70°20%⌄
Day≈84–94°
Night≈64–75°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
84°67°20%⌄
Day≈79–89°
Night≈61–72°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
85°67°1.9 mm⌄
Day≈79–90°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
92°71°20%⌄
Day≈86–97°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
94°73°20%⌄
Day≈89–100°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
93°72°1.1 mm⌄
Day≈87–98°
Night≈66–77°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
93°72°20%⌄
Day≈88–99°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈83–94°
Night≈64–75°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Light rain (climatological)
86°68°1.0 mm⌄
Day≈80–91°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
88°69°20%⌄
Day≈82–93°
Night≈63–74°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
77°59°20%⌄
Day≈72–82°
Night≈54–65°
Precip≈0.6 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Light rain (climatological)
80°61°1.2 mm⌄
Day≈75–86°
Night≈56–67°
Precip≈0.6 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.