Gap · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Gap & 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
93°
Thu, Sep 3
Coldest night
59°
Tue, Sep 8
Days with precip
6 / 14
of 14 forecast days
Nicest day
Tue, Sep 8
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
82° 60°
17% precip chance
Sat 5 – Sun 6 Sep
86° 65°
77% precip chance
Sat 12 – Sun 13 Sep
79° 62°
typical range
Sat 19 – Sun 20 Sep
81° 60°
typical range
30 days — Gap
14 forecast + 16 climatology
Thu · Today Sunny
90°65°33.7 mm⌄
Wind13 mph S
Gusts29 mph
UV index7 – High
Precip chance78%
Sunrise06:27
Sunset19:43
Fri · Tomorrow Mostly cloudy
80°66°13.3 mm⌄
Wind8 mph NE
Gusts21 mph
UV index7 – High
Precip chance85%
Sunrise06:28
Sunset19:42
Saturday 29/8 Mostly cloudy
76°60°8%⌄
Wind7 mph N
Gusts20 mph
UV index6 – High
Precip chance8%
Sunrise06:29
Sunset19:40
Sunday 30/8 Sunny
82°63°0.1 mm⌄
Wind10 mph S
Gusts16 mph
UV index7 – High
Precip chance17%
Sunrise06:30
Sunset19:39
Monday 31/8 Mostly cloudy
80°71°0.3 mm⌄
Wind6 mph W
Gusts22 mph
UV index7 – High
Precip chance37%
Sunrise06:31
Sunset19:37
Tuesday 1/9 Mostly cloudy
89°73°13%⌄
Wind13 mph W
Gusts29 mph
UV index8 – Very high
Precip chance13%
Sunrise06:32
Sunset19:36
Wednesday 2/9 Showers
74°67°0.7 mm⌄
Wind9 mph E
Gusts18 mph
UV index5 – Moderate
Precip chance64%
Sunrise06:32
Sunset19:34
Thursday 3/9 Sunny
93°67°0.7 mm⌄
Wind13 mph W
Gusts20 mph
UV index8 – Very high
Precip chance47%
Sunrise06:33
Sunset19:33
Friday 4/9 Sunny
84°71°1.3 mm⌄
Wind7 mph N
Gusts27 mph
UV index7 – High
Precip chance57%
Sunrise06:34
Sunset19:31
Saturday 5/9 Mostly cloudy
86°70°3.0 mm⌄
Wind13 mph NW
Gusts22 mph
UV index6 – High
Precip chance77%
Sunrise06:35
Sunset19:29
Sunday 6/9 Showers
79°65°1.6 mm⌄
Wind9 mph E
Gusts17 mph
UV index6 – High
Precip chance67%
Sunrise06:36
Sunset19:28
Monday 7/9 Sunny
79°64°15%⌄
Wind5 mph N
Gusts10 mph
UV index6 – High
Precip chance15%
Sunrise06:37
Sunset19:26
Tuesday 8/9 Sunny
74°59°5%⌄
Wind7 mph NE
Gusts13 mph
UV index6 – High
Precip chance5%
Sunrise06:38
Sunset19:24
Wednesday 9/9 Mostly cloudy
77°60°14%⌄
Wind4 mph W
Gusts5 mph
UV index5 – Moderate
Precip chance14%
Sunrise06:39
Sunset19:23
Thursday 10/9 Rain (climatological)
72°58°14.7 mm⌄
Day≈67–78°
Night≈53–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
80°63°20%⌄
Day≈74–85°
Night≈57–68°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
79°62°20%⌄
Day≈74–85°
Night≈57–68°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
79°62°15.5 mm⌄
Day≈73–84°
Night≈56–67°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
74°59°20%⌄
Day≈68–79°
Night≈54–64°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–75°
Night≈51–62°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
71°57°10.7 mm⌄
Day≈66–77°
Night≈52–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
74°59°20%⌄
Day≈68–79°
Night≈54–64°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈72–83°
Night≈56–66°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
81°64°10.7 mm⌄
Day≈76–87°
Night≈58–69°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
75°60°20%⌄
Day≈70–80°
Night≈54–65°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
71°58°20%⌄
Day≈66–77°
Night≈52–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
71°58°9.1 mm⌄
Day≈66–77°
Night≈52–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
69°56°20%⌄
Day≈64–74°
Night≈51–62°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
73°58°20%⌄
Day≈68–78°
Night≈53–64°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
77°61°8.3 mm⌄
Day≈71–82°
Night≈55–66°
Precip≈4.7 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 Gap, 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.