Rock Island · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Rock 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
38°
Thu, Sep 10
Coldest night
13°
Wed, Sep 9
Days with precip
6 / 14
of 14 forecast days
Nicest day
Tue, Sep 15
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
33° 21°
78% precip chance
Sat 12 – Sun 13 Sep
34° 18°
78% precip chance
Sat 19 – Sun 20 Sep
33° 19°
typical range
Sat 26 – Sun 27 Sep
31° 19°
typical range
30 days — Rock Island
14 forecast + 16 climatology
Wed · Today Sunny
36°23°8%⌄
Wind11 mph SW
Gusts35 mph
UV index8 – High
Precip chance8%
Sunrise06:29
Sunset19:34
Thu · Tomorrow Showers
34°22°2.3 mm⌄
Wind11 mph S
Gusts28 mph
UV index8 – Very high
Precip chance57%
Sunrise06:30
Sunset19:32
Friday 4/9 Sunny
35°25°0.4 mm⌄
Wind11 mph W
Gusts26 mph
UV index7 – High
Precip chance36%
Sunrise06:31
Sunset19:31
Saturday 5/9 Thunderstorms
33°23°0.6 mm⌄
Wind8 mph SE
Gusts21 mph
UV index7 – High
Precip chance41%
Sunrise06:32
Sunset19:29
Sunday 6/9 Sunny
31°21°6.6 mm⌄
Wind10 mph SE
Gusts21 mph
UV index8 – Very high
Precip chance78%
Sunrise06:33
Sunset19:27
Monday 7/9 Fog
30°22°8.9 mm⌄
Wind17 mph W
Gusts25 mph
UV index7 – High
Precip chance85%
Sunrise06:34
Sunset19:26
Tuesday 8/9 Mostly cloudy
22°14°1.4 mm⌄
Wind16 mph NE
Gusts26 mph
UV index4 – Moderate
Precip chance74%
Sunrise06:35
Sunset19:24
Wednesday 9/9 Sunny
27°13°0.3 mm⌄
Wind13 mph SE
Gusts36 mph
UV index7 – High
Precip chance36%
Sunrise06:36
Sunset19:22
Thursday 10/9 Sunny
38°23°0.2 mm⌄
Wind15 mph SW
Gusts37 mph
UV index9 – Very high
Precip chance17%
Sunrise06:37
Sunset19:20
Friday 11/9 Mostly cloudy
24°17°2.9 mm⌄
Wind10 mph NW
Gusts24 mph
UV index5 – Moderate
Precip chance70%
Sunrise06:38
Sunset19:19
Saturday 12/9 Mostly cloudy
24°18°4.7 mm⌄
Wind12 mph SE
Gusts25 mph
UV index5 – Moderate
Precip chance78%
Sunrise06:39
Sunset19:17
Sunday 13/9 Sunny
34°19°1.0 mm⌄
Wind15 mph SW
Gusts36 mph
UV index8 – Very high
Precip chance40%
Sunrise06:40
Sunset19:15
Monday 14/9 Sunny
33°21°4%⌄
Wind13 mph E
Gusts38 mph
UV index8 – Very high
Precip chance4%
Sunrise06:41
Sunset19:14
Tuesday 15/9 Sunny
26°17°13%⌄
Wind13 mph E
Gusts24 mph
UV index7 – High
Precip chance13%
Sunrise06:42
Sunset19:12
Wednesday 16/9 Rain (climatological)
29°19°7.0 mm⌄
Day≈26–32°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
33°21°7.3 mm⌄
Day≈30–36°
Night≈18–24°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
28°19°6.2 mm⌄
Day≈25–31°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
31°20°20%⌄
Day≈28–34°
Night≈17–23°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
31°20°6.6 mm⌄
Day≈28–34°
Night≈17–23°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
31°20°20%⌄
Day≈28–34°
Night≈17–23°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
30°19°20%⌄
Day≈27–33°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
27°18°5.5 mm⌄
Day≈24–30°
Night≈15–21°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
29°19°20%⌄
Day≈26–32°
Night≈16–22°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
31°20°20%⌄
Day≈28–34°
Night≈17–23°
Precip≈2.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
27°15°8.5 mm⌄
Day≈24–30°
Night≈12–18°
Precip≈2.5 in / October
(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 Rock 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.