Grand Island · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Grand Island & 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
43°
Wed, Sep 9
Coldest night
20°
Fri, Sep 11
Days with precip
2 / 14
of 14 forecast days
Nicest day
Fri, Sep 11
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
41° 25°
57% precip chance
Sat 12 – Sun 13 Sep
40° 23°
6% precip chance
Sat 19 – Sun 20 Sep
33° 21°
typical range
Sat 26 – Sun 27 Sep
33° 19°
typical range
30 days — Grand Island
14 forecast + 16 climatology
Mon · Today Sunny
32°21°0.9 mm⌄
Wind11 mph N
Gusts18 mph
UV index8 – Very high
Precip chance42%
Sunrise06:59
Sunset20:08
Tue · Tomorrow Mostly cloudy
36°22°1.7 mm⌄
Wind13 mph N
Gusts30 mph
UV index8 – Very high
Precip chance57%
Sunrise07:00
Sunset20:06
Wednesday 2/9 Sunny
38°24°0.2 mm⌄
Wind17 mph S
Gusts36 mph
UV index8 – Very high
Precip chance17%
Sunrise07:01
Sunset20:04
Thursday 3/9 Sunny
39°26°0.1 mm⌄
Wind20 mph S
Gusts40 mph
UV index8 – Very high
Precip chance17%
Sunrise07:02
Sunset20:03
Friday 4/9 Mostly cloudy
38°26°8%⌄
Wind16 mph S
Gusts33 mph
UV index7 – High
Precip chance8%
Sunrise07:03
Sunset20:01
Saturday 5/9 Mostly cloudy
41°28°9%⌄
Wind16 mph S
Gusts34 mph
UV index9 – Very high
Precip chance9%
Sunrise07:04
Sunset19:59
Sunday 6/9 Partly cloudy
40°25°2.5 mm⌄
Wind15 mph S
Gusts28 mph
UV index10 – Very high
Precip chance57%
Sunrise07:05
Sunset19:58
Monday 7/9 Sunny
38°25°1%⌄
Wind14 mph SW
Gusts33 mph
UV index9 – Very high
Precip chance1%
Sunrise07:06
Sunset19:56
Tuesday 8/9 Sunny
43°26°0%⌄
Wind13 mph S
Gusts21 mph
UV index10 – Very high
Precip chance0%
Sunrise07:07
Sunset19:54
Wednesday 9/9 Sunny
43°31°0%⌄
Wind21 mph SW
Gusts40 mph
UV index10 – Very high
Precip chance0%
Sunrise07:08
Sunset19:53
Thursday 10/9 Sunny
41°26°2%⌄
Wind22 mph SW
Gusts43 mph
UV index10 – Very high
Precip chance2%
Sunrise07:09
Sunset19:51
Friday 11/9 Partly cloudy
32°20°17%⌄
Wind13 mph SW
Gusts25 mph
UV index7 – High
Precip chance17%
Sunrise07:10
Sunset19:49
Saturday 12/9 Mostly cloudy
39°23°6%⌄
Wind16 mph SW
Gusts23 mph
UV index9 – Very high
Precip chance6%
Sunrise07:11
Sunset19:48
Sunday 13/9 Sunny
40°27°1%⌄
Wind18 mph SW
Gusts28 mph
UV index9 – Very high
Precip chance1%
Sunrise07:12
Sunset19:46
Monday 14/9 Light rain (climatological)
33°21°1.2 mm⌄
Day≈30–36°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
38°23°20%⌄
Day≈35–41°
Night≈20–26°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
37°23°20%⌄
Day≈34–40°
Night≈20–26°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
36°22°1.1 mm⌄
Day≈33–39°
Night≈19–25°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
34°21°20%⌄
Day≈31–37°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
33°21°1.4 mm⌄
Day≈30–36°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
36°22°20%⌄
Day≈33–39°
Night≈19–25°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
38°23°1.8 mm⌄
Day≈35–41°
Night≈20–26°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
34°21°20%⌄
Day≈31–37°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
31°19°1.4 mm⌄
Day≈28–34°
Night≈16–22°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
36°22°20%⌄
Day≈33–39°
Night≈19–25°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Light rain (climatological)
37°23°1.2 mm⌄
Day≈34–40°
Night≈20–26°
Precip≈0.6 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 Grand Island, 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.