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
38°
Sat, Sep 5
Coldest night
21°
Sun, Aug 30
Days with precip
4 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
34° 21°
73% precip chance
Sat 5 – Sun 6 Sep
38° 26°
7% precip chance
Sat 12 – Sun 13 Sep
35° 23°
typical range
Sat 19 – Sun 20 Sep
35° 23°
typical range
30 days — Quincy
14 forecast + 16 climatology
Sat · Today Mostly cloudy
31°22°1.6 mm⌄
Wind5 mph E
Gusts12 mph
UV index7 – High
Precip chance73%
Sunrise07:13
Sunset20:05
Sun · Tomorrow Showers
34°21°2.8 mm⌄
Wind8 mph NE
Gusts16 mph
UV index10 – Very high
Precip chance72%
Sunrise07:13
Sunset20:04
Monday 31/8 Mostly cloudy
35°24°7.5 mm⌄
Wind5 mph NE
Gusts20 mph
UV index10 – Very high
Precip chance81%
Sunrise07:14
Sunset20:02
Tuesday 1/9 Sunny
36°24°0.9 mm⌄
Wind7 mph W
Gusts17 mph
UV index10 – Very high
Precip chance36%
Sunrise07:14
Sunset20:01
Wednesday 2/9 Sunny
36°25°0.2 mm⌄
Wind8 mph E
Gusts17 mph
UV index9 – Very high
Precip chance17%
Sunrise07:15
Sunset20:00
Thursday 3/9 Mostly cloudy
37°26°8%⌄
Wind7 mph E
Gusts18 mph
UV index9 – Very high
Precip chance8%
Sunrise07:16
Sunset19:59
Friday 4/9 Sunny
37°26°4%⌄
Wind6 mph S
Gusts15 mph
UV index9 – Very high
Precip chance4%
Sunrise07:16
Sunset19:58
Saturday 5/9 Sunny
38°26°4%⌄
Wind9 mph SW
Gusts21 mph
UV index9 – Very high
Precip chance4%
Sunrise07:17
Sunset19:56
Sunday 6/9 Sunny
38°26°7%⌄
Wind10 mph SW
Gusts25 mph
UV index9 – Very high
Precip chance7%
Sunrise07:17
Sunset19:55
Monday 7/9 Sunny
38°26°3%⌄
Wind7 mph N
Gusts16 mph
UV index9 – Very high
Precip chance3%
Sunrise07:18
Sunset19:54
Tuesday 8/9 Sunny
38°26°3%⌄
Wind7 mph NW
Gusts14 mph
UV index9 – Very high
Precip chance3%
Sunrise07:18
Sunset19:53
Wednesday 9/9 Sunny
38°27°5%⌄
Wind9 mph NW
Gusts20 mph
UV index9 – Very high
Precip chance5%
Sunrise07:19
Sunset19:51
Thursday 10/9 Sunny
37°26°4%⌄
Wind14 mph SW
Gusts23 mph
UV index9 – Very high
Precip chance4%
Sunrise07:20
Sunset19:50
Friday 11/9 Sunny
35°25°1.6 mm⌄
Wind10 mph SW
Gusts21 mph
UV index9 – Very high
Precip chance57%
Sunrise07:20
Sunset19:49
Saturday 12/9 Rain (climatological)
33°23°2.6 mm⌄
Day≈30–36°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
35°24°20%⌄
Day≈32–38°
Night≈21–27°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
37°25°20%⌄
Day≈34–40°
Night≈22–28°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
35°24°2.8 mm⌄
Day≈32–38°
Night≈21–27°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
33°23°20%⌄
Day≈30–36°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
33°22°20%⌄
Day≈30–36°
Night≈19–25°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
33°23°3.2 mm⌄
Day≈30–36°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
35°24°20%⌄
Day≈32–38°
Night≈21–27°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
37°25°2.9 mm⌄
Day≈34–40°
Night≈22–28°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
33°22°4.1 mm⌄
Day≈30–36°
Night≈19–25°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
33°22°20%⌄
Day≈30–36°
Night≈19–25°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
35°24°2.8 mm⌄
Day≈32–38°
Night≈21–27°
Precip≈1.3 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.