Frontenac · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Frontenac & 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
104°
Fri, Sep 4
Coldest night
63°
Thu, Sep 10
Days with precip
3 / 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
100° 69°
8% precip chance
Sat 5 – Sun 6 Sep
101° 78°
57% precip chance
Sat 12 – Sun 13 Sep
95° 71°
typical range
Sat 19 – Sun 20 Sep
98° 72°
typical range
30 days — Frontenac
14 forecast + 16 climatology
Fri · Today Sunny
92°64°3%⌄
Wind9 mph NE
Gusts20 mph
UV index8 – Very high
Precip chance3%
Sunrise06:27
Sunset19:38
Sat · Tomorrow Mostly cloudy
91°69°8%⌄
Wind10 mph SE
Gusts25 mph
UV index8 – Very high
Precip chance8%
Sunrise06:28
Sunset19:36
Sunday 30/8 Mostly cloudy
100°74°5%⌄
Wind12 mph S
Gusts31 mph
UV index9 – Very high
Precip chance5%
Sunrise06:29
Sunset19:35
Monday 31/8 Sunny
100°82°3%⌄
Wind13 mph S
Gusts34 mph
UV index9 – Very high
Precip chance3%
Sunrise06:30
Sunset19:33
Tuesday 1/9 Sunny
103°82°1%⌄
Wind13 mph S
Gusts34 mph
UV index9 – Very high
Precip chance1%
Sunrise06:30
Sunset19:32
Wednesday 2/9 Sunny
103°83°1%⌄
Wind10 mph SW
Gusts24 mph
UV index9 – Very high
Precip chance1%
Sunrise06:31
Sunset19:30
Thursday 3/9 Sunny
104°85°1%⌄
Wind10 mph W
Gusts29 mph
UV index10 – Very high
Precip chance1%
Sunrise06:32
Sunset19:29
Friday 4/9 Sunny
104°87°0.1 mm⌄
Wind11 mph W
Gusts18 mph
UV index10 – Very high
Precip chance17%
Sunrise06:33
Sunset19:27
Saturday 5/9 Showers
101°83°1.5 mm⌄
Wind10 mph W
Gusts19 mph
UV index9 – Very high
Precip chance57%
Sunrise06:34
Sunset19:26
Sunday 6/9 Showers
101°78°2.3 mm⌄
Wind12 mph N
Gusts25 mph
UV index9 – Very high
Precip chance57%
Sunrise06:35
Sunset19:24
Monday 7/9 Mostly cloudy
92°68°7%⌄
Wind12 mph NE
Gusts23 mph
UV index8 – Very high
Precip chance7%
Sunrise06:36
Sunset19:23
Tuesday 8/9 Mostly cloudy
89°66°5%⌄
Wind9 mph NE
Gusts19 mph
UV index8 – Very high
Precip chance5%
Sunrise06:37
Sunset19:21
Wednesday 9/9 Mostly cloudy
100°72°0.6 mm⌄
Wind13 mph S
Gusts27 mph
UV index9 – Very high
Precip chance36%
Sunrise06:38
Sunset19:19
Thursday 10/9 Showers
91°63°7.8 mm⌄
Wind13 mph NW
Gusts25 mph
UV index5 – Moderate
Precip chance82%
Sunrise06:38
Sunset19:18
Friday 11/9 Rain (climatological)
92°70°2.4 mm⌄
Day≈87–98°
Night≈65–76°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
94°71°20%⌄
Day≈88–99°
Night≈66–76°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
95°72°20%⌄
Day≈90–100°
Night≈67–77°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
93°71°2.5 mm⌄
Day≈87–98°
Night≈65–76°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
90°69°20%⌄
Day≈85–96°
Night≈64–74°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
84°65°20%⌄
Day≈79–90°
Night≈60–71°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
89°69°1.9 mm⌄
Day≈84–95°
Night≈63–74°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
89°68°20%⌄
Day≈84–95°
Night≈63–74°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
95°72°20%⌄
Day≈90–101°
Night≈67–77°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
98°73°3.4 mm⌄
Day≈92–103°
Night≈68–79°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
95°72°20%⌄
Day≈90–101°
Night≈67–77°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
92°70°20%⌄
Day≈87–97°
Night≈65–75°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
85°66°3.1 mm⌄
Day≈80–91°
Night≈60–71°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
86°67°20%⌄
Day≈81–92°
Night≈61–72°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈84–95°
Night≈63–74°
Precip≈1.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
93°71°3.1 mm⌄
Day≈88–98°
Night≈65–76°
Precip≈1.1 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 Frontenac, 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.