Saint-Constant · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Saint-Constant & 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
82°
Thu, Aug 27
Coldest night
50°
Tue, Sep 1
Days with precip
6 / 14
of 14 forecast days
Nicest day
Sat, Aug 29
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
70° 56°
70% precip chance
Sat 5 – Sun 6 Sep
72° 49°
typical range
Sat 12 – Sun 13 Sep
60° 47°
typical range
Sat 19 – Sun 20 Sep
62° 47°
typical range
30 days — Saint-Constant
14 forecast + 16 climatology
Sun · Today Sunny
77°64°23.7 mm⌄
Wind13 mph S
Gusts25 mph
UV index4 – Moderate
Precip chance79%
Sunrise06:05
Sunset19:48
Mon · Tomorrow Showers
71°58°35.5 mm⌄
Wind8 mph SW
Gusts20 mph
UV index5 – Moderate
Precip chance84%
Sunrise06:06
Sunset19:46
Tuesday 25/8 Showers
74°59°3.3 mm⌄
Wind9 mph W
Gusts17 mph
UV index5 – Moderate
Precip chance74%
Sunrise06:07
Sunset19:45
Wednesday 26/8 Partly cloudy
75°59°11%⌄
Wind9 mph W
Gusts13 mph
UV index6 – High
Precip chance11%
Sunrise06:08
Sunset19:43
Thursday 27/8 Mostly cloudy
82°59°0.3 mm⌄
Wind12 mph S
Gusts22 mph
UV index7 – High
Precip chance29%
Sunrise06:09
Sunset19:41
Friday 28/8 Sunny
78°62°0.8 mm⌄
Wind13 mph W
Gusts22 mph
UV index7 – High
Precip chance48%
Sunrise06:11
Sunset19:39
Saturday 29/8 Sunny
70°56°4%⌄
Wind8 mph SW
Gusts14 mph
UV index6 – High
Precip chance4%
Sunrise06:12
Sunset19:37
Sunday 30/8 Showers
59°56°2.1 mm⌄
Wind5 mph S
Gusts13 mph
UV index4 – Moderate
Precip chance70%
Sunrise06:13
Sunset19:36
Monday 31/8 Sunny
62°53°0.6 mm⌄
Wind11 mph NW
Gusts19 mph
UV index5 – Moderate
Precip chance41%
Sunrise06:14
Sunset19:34
Tuesday 1/9 Sunny
64°50°10%⌄
Wind9 mph W
Gusts18 mph
UV index5 – Moderate
Precip chance10%
Sunrise06:15
Sunset19:32
Wednesday 2/9 Mostly cloudy
65°50°15%⌄
Wind4 mph SE
Gusts15 mph
UV index4 – Moderate
Precip chance15%
Sunrise06:17
Sunset19:30
Thursday 3/9 Mostly cloudy
74°57°0.3 mm⌄
Wind8 mph SE
Gusts22 mph
UV index6 – High
Precip chance36%
Sunrise06:18
Sunset19:28
Friday 4/9 Mostly cloudy
77°60°1.0 mm⌄
Wind7 mph SE
Gusts20 mph
UV index5 – Moderate
Precip chance60%
Sunrise06:19
Sunset19:26
Saturday 5/9 Showers
72°61°1.1 mm⌄
Wind11 mph W
Gusts20 mph
UV index6 – High
Precip chance62%
Sunrise06:20
Sunset19:25
Sunday 6/9 Rain (climatological)
62°49°8.4 mm⌄
Day≈57–68°
Night≈44–55°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
64°50°20%⌄
Day≈59–70°
Night≈45–56°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
66°51°20%⌄
Day≈61–72°
Night≈46–57°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
63°49°8.9 mm⌄
Day≈57–68°
Night≈44–55°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
58°47°20%⌄
Day≈53–64°
Night≈41–52°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
60°48°20%⌄
Day≈55–66°
Night≈42–53°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
59°47°13.9 mm⌄
Day≈54–65°
Night≈42–53°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
60°47°20%⌄
Day≈54–65°
Night≈42–53°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
65°51°20%⌄
Day≈60–71°
Night≈46–56°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
68°53°7.9 mm⌄
Day≈62–73°
Night≈47–58°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
62°49°20%⌄
Day≈57–68°
Night≈44–55°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
62°49°20%⌄
Day≈57–67°
Night≈44–54°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
57°46°9.4 mm⌄
Day≈51–62°
Night≈40–51°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
59°47°20%⌄
Day≈54–65°
Night≈42–53°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
62°49°20%⌄
Day≈56–67°
Night≈44–54°
Precip≈5.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
63°50°9.4 mm⌄
Day≈58–69°
Night≈44–55°
Precip≈5.9 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 Saint-Constant, 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.