Blue Grass · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Blue Grass & 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
90°
Thu, Aug 27
Coldest night
61°
Mon, Aug 24
Days with precip
7 / 14
of 14 forecast days
Nicest day
Mon, Aug 24
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
90° 70°
65% precip chance
Sat 5 – Sun 6 Sep
82° 68°
94% precip chance
Sat 12 – Sun 13 Sep
74° 58°
typical range
Sat 19 – Sun 20 Sep
76° 60°
typical range
30 days — Blue Grass
14 forecast + 16 climatology
Mon · Today Sunny
81°61°5%⌄
Wind11 mph W
Gusts22 mph
UV index7 – High
Precip chance5%
Sunrise06:20
Sunset19:44
Tue · Tomorrow Sunny
83°65°3%⌄
Wind12 mph NW
Gusts17 mph
UV index7 – High
Precip chance3%
Sunrise06:21
Sunset19:43
Wednesday 26/8 Sunny
86°66°5%⌄
Wind7 mph SW
Gusts17 mph
UV index8 – High
Precip chance5%
Sunrise06:22
Sunset19:41
Thursday 27/8 Mostly cloudy
90°70°0.2 mm⌄
Wind12 mph S
Gusts19 mph
UV index7 – High
Precip chance21%
Sunrise06:23
Sunset19:40
Friday 28/8 Mostly cloudy
89°69°0.6 mm⌄
Wind8 mph W
Gusts19 mph
UV index8 – Very high
Precip chance36%
Sunrise06:24
Sunset19:38
Saturday 29/8 Sunny
90°72°3%⌄
Wind7 mph S
Gusts17 mph
UV index8 – Very high
Precip chance3%
Sunrise06:25
Sunset19:36
Sunday 30/8 Showers
86°70°4.7 mm⌄
Wind11 mph S
Gusts15 mph
UV index7 – High
Precip chance65%
Sunrise06:26
Sunset19:35
Monday 31/8 Showers
88°71°7.2 mm⌄
Wind10 mph W
Gusts13 mph
UV index8 – Very high
Precip chance75%
Sunrise06:27
Sunset19:33
Tuesday 1/9 Mostly cloudy
78°70°8.2 mm⌄
Wind6 mph NE
Gusts12 mph
UV index6 – High
Precip chance81%
Sunrise06:27
Sunset19:32
Wednesday 2/9 Mostly cloudy
83°67°6.5 mm⌄
Wind9 mph S
Gusts21 mph
UV index6 – High
Precip chance76%
Sunrise06:28
Sunset19:30
Thursday 3/9 Showers
82°70°19.2 mm⌄
Wind9 mph SE
Gusts25 mph
UV index6 – High
Precip chance89%
Sunrise06:29
Sunset19:29
Friday 4/9 Sunny
84°67°5%⌄
Wind8 mph NW
Gusts17 mph
UV index7 – High
Precip chance5%
Sunrise06:30
Sunset19:27
Saturday 5/9 Mostly cloudy
82°68°1.1 mm⌄
Wind8 mph E
Gusts19 mph
UV index6 – High
Precip chance57%
Sunrise06:31
Sunset19:25
Sunday 6/9 Showers
73°68°22.3 mm⌄
Wind9 mph SE
Gusts23 mph
UV index5 – Moderate
Precip chance94%
Sunrise06:32
Sunset19:24
Monday 7/9 Rain (climatological)
77°62°7.6 mm⌄
Day≈72–83°
Night≈57–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
82°65°20%⌄
Day≈76–87°
Night≈59–70°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
83°65°20%⌄
Day≈77–88°
Night≈60–71°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
77°62°8.6 mm⌄
Day≈72–82°
Night≈56–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
77°62°20%⌄
Day≈72–82°
Night≈56–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
70°58°20%⌄
Day≈65–76°
Night≈52–63°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
74°60°8.6 mm⌄
Day≈69–80°
Night≈55–66°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈71–82°
Night≈56–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
81°64°20%⌄
Day≈76–87°
Night≈59–70°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
82°65°14.7 mm⌄
Day≈76–87°
Night≈59–70°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
80°64°20%⌄
Day≈75–85°
Night≈58–69°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
73°60°20%⌄
Day≈68–79°
Night≈54–65°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
74°60°18.2 mm⌄
Day≈68–79°
Night≈55–65°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈70–81°
Night≈56–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈70–81°
Night≈56–67°
Precip≈6.0 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
79°63°9.1 mm⌄
Day≈74–85°
Night≈58–69°
Precip≈6.0 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 Blue Grass, 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.