Quincy · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Quincy & 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
99°
Thu, Sep 3
Coldest night
73°
Sun, Aug 30
Days with precip
5 / 14
of 14 forecast days
Nicest day
Mon, Aug 31
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
91° 73°
75% precip chance
Sat 5 – Sun 6 Sep
98° 78°
36% precip chance
Sat 12 – Sun 13 Sep
92° 72°
typical range
Sat 19 – Sun 20 Sep
90° 73°
typical range
30 days — Quincy
14 forecast + 16 climatology
Wed · Today Showers
94°76°2.9 mm⌄
Wind7 mph S
Gusts15 mph
UV index10 – Very high
Precip chance74%
Sunrise07:11
Sunset20:08
Thu · Tomorrow Showers
91°74°4.7 mm⌄
Wind9 mph SW
Gusts17 mph
UV index10 – Very high
Precip chance78%
Sunrise07:12
Sunset20:07
Friday 28/8 Showers
86°73°9.5 mm⌄
Wind9 mph SW
Gusts15 mph
UV index7 – High
Precip chance85%
Sunrise07:12
Sunset20:06
Saturday 29/8 Mostly cloudy
91°73°3.9 mm⌄
Wind13 mph E
Gusts19 mph
UV index7 – High
Precip chance75%
Sunrise07:13
Sunset20:05
Sunday 30/8 Mostly cloudy
91°73°0.1 mm⌄
Wind6 mph E
Gusts15 mph
UV index8 – Very high
Precip chance23%
Sunrise07:13
Sunset20:04
Monday 31/8 Mostly cloudy
94°76°12%⌄
Wind6 mph E
Gusts15 mph
UV index8 – Very high
Precip chance12%
Sunrise07:14
Sunset20:02
Tuesday 1/9 Mostly cloudy
95°79°0.1 mm⌄
Wind5 mph SW
Gusts11 mph
UV index9 – Very high
Precip chance17%
Sunrise07:14
Sunset20:01
Wednesday 2/9 Showers
98°77°10.2 mm⌄
Wind6 mph NW
Gusts20 mph
UV index8 – Very high
Precip chance79%
Sunrise07:15
Sunset20:00
Thursday 3/9 Sunny
99°78°8%⌄
Wind6 mph S
Gusts15 mph
UV index9 – Very high
Precip chance8%
Sunrise07:16
Sunset19:59
Friday 4/9 Sunny
98°79°7%⌄
Wind10 mph S
Gusts17 mph
UV index9 – Very high
Precip chance7%
Sunrise07:16
Sunset19:58
Saturday 5/9 Sunny
98°78°4%⌄
Wind9 mph SW
Gusts19 mph
UV index9 – Very high
Precip chance4%
Sunrise07:17
Sunset19:56
Sunday 6/9 Sunny
96°78°0.9 mm⌄
Wind8 mph W
Gusts18 mph
UV index9 – Very high
Precip chance36%
Sunrise07:17
Sunset19:55
Monday 7/9 Thunderstorms
97°78°15%⌄
Wind9 mph NW
Gusts21 mph
UV index8 – Very high
Precip chance15%
Sunrise07:18
Sunset19:54
Tuesday 8/9 Showers
98°78°0.3 mm⌄
Wind6 mph SW
Gusts18 mph
UV index9 – Very high
Precip chance36%
Sunrise07:18
Sunset19:53
Wednesday 9/9 Rain (climatological)
89°73°5.7 mm⌄
Day≈84–95°
Night≈67–78°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
92°74°20%⌄
Day≈87–98°
Night≈69–80°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
96°76°20%⌄
Day≈90–101°
Night≈71–82°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
92°74°6.2 mm⌄
Day≈86–97°
Night≈69–79°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
89°72°20%⌄
Day≈83–94°
Night≈67–78°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
88°72°20%⌄
Day≈82–93°
Night≈66–77°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
89°73°7.1 mm⌄
Day≈84–95°
Night≈67–78°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
91°73°20%⌄
Day≈85–96°
Night≈68–79°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
92°74°20%⌄
Day≈87–98°
Night≈69–80°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
96°77°6.4 mm⌄
Day≈91–102°
Night≈71–82°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
90°73°20%⌄
Day≈85–96°
Night≈68–78°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
90°73°20%⌄
Day≈85–96°
Night≈68–78°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
88°72°9.0 mm⌄
Day≈82–93°
Night≈66–77°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
85°70°20%⌄
Day≈79–90°
Night≈64–75°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
88°72°20%⌄
Day≈83–94°
Night≈67–77°
Precip≈2.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
92°74°6.2 mm⌄
Day≈87–97°
Night≈69–79°
Precip≈2.8 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 Quincy, 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.