Grant City · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Grant City & 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
33°
Thu, Sep 3
Coldest night
17°
Wed, Sep 9
Days with precip
8 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
30° 21°
10% precip chance
Sat 5 – Sun 6 Sep
25° 18°
62% precip chance
Sat 12 – Sun 13 Sep
27° 18°
typical range
Sat 19 – Sun 20 Sep
28° 18°
typical range
30 days — Grant City
14 forecast + 16 climatology
Thu · Today Mostly cloudy
30°20°1.4 mm⌄
Wind16 mph S
Gusts24 mph
UV index7 – High
Precip chance62%
Sunrise06:18
Sunset19:37
Fri · Tomorrow Mostly cloudy
32°22°0.2 mm⌄
Wind11 mph N
Gusts19 mph
UV index7 – High
Precip chance21%
Sunrise06:19
Sunset19:35
Saturday 29/8 Mostly cloudy
28°21°10%⌄
Wind8 mph N
Gusts11 mph
UV index6 – High
Precip chance10%
Sunrise06:20
Sunset19:33
Sunday 30/8 Sunny
30°21°5%⌄
Wind12 mph SW
Gusts25 mph
UV index7 – High
Precip chance5%
Sunrise06:21
Sunset19:32
Monday 31/8 Mostly cloudy
31°21°3.1 mm⌄
Wind14 mph W
Gusts30 mph
UV index7 – High
Precip chance66%
Sunrise06:22
Sunset19:30
Tuesday 1/9 Mostly cloudy
32°22°16.1 mm⌄
Wind12 mph E
Gusts29 mph
UV index7 – High
Precip chance84%
Sunrise06:23
Sunset19:29
Wednesday 2/9 Showers
24°22°18.6 mm⌄
Wind10 mph S
Gusts13 mph
UV index5 – Moderate
Precip chance91%
Sunrise06:24
Sunset19:27
Thursday 3/9 Mostly cloudy
33°22°5.1 mm⌄
Wind11 mph NW
Gusts23 mph
UV index7 – High
Precip chance74%
Sunrise06:25
Sunset19:25
Friday 4/9 Showers
25°21°10.2 mm⌄
Wind7 mph E
Gusts14 mph
UV index5 – Moderate
Precip chance88%
Sunrise06:26
Sunset19:24
Saturday 5/9 Sunny
25°19°5.8 mm⌄
Wind12 mph NE
Gusts20 mph
UV index6 – High
Precip chance62%
Sunrise06:27
Sunset19:22
Sunday 6/9 Sunny
25°18°3%⌄
Wind11 mph SE
Gusts15 mph
UV index7 – High
Precip chance3%
Sunrise06:28
Sunset19:21
Monday 7/9 Sunny
25°18°0.4 mm⌄
Wind11 mph SE
Gusts21 mph
UV index7 – High
Precip chance36%
Sunrise06:29
Sunset19:19
Tuesday 8/9 Mostly cloudy
28°21°0.6 mm⌄
Wind10 mph W
Gusts17 mph
UV index7 – High
Precip chance38%
Sunrise06:30
Sunset19:17
Wednesday 9/9 Showers
24°17°48.8 mm⌄
Wind15 mph W
Gusts25 mph
UV index5 – Moderate
Precip chance88%
Sunrise06:31
Sunset19:16
Thursday 10/9 Rain (climatological)
25°18°14.4 mm⌄
Day≈22–28°
Night≈15–21°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
27°19°20%⌄
Day≈24–30°
Night≈16–22°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
25°18°31.2 mm⌄
Day≈22–28°
Night≈15–21°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
23°16°20%⌄
Day≈20–26°
Night≈13–19°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
20°15°20%⌄
Day≈17–23°
Night≈12–18°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
23°16°15.2 mm⌄
Day≈20–26°
Night≈13–19°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
25°17°20%⌄
Day≈22–28°
Night≈14–20°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
28°19°15.2 mm⌄
Day≈25–31°
Night≈16–22°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
23°16°20%⌄
Day≈20–26°
Night≈13–19°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
21°15°32.0 mm⌄
Day≈18–24°
Night≈12–18°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
22°16°20%⌄
Day≈19–25°
Night≈13–19°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
24°16°20%⌄
Day≈21–27°
Night≈13–19°
Precip≈9.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
26°18°21.6 mm⌄
Day≈23–29°
Night≈15–21°
Precip≈9.5 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 Grant City, 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.