Iowa City · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Iowa 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
39°
Mon, Sep 7
Coldest night
10°
Sat, Sep 12
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sun, Sep 13
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
34° 22°
22% precip chance
Sat 12 – Sun 13 Sep
27° 10°
7% precip chance
Sat 19 – Sun 20 Sep
25° 13°
typical range
Sat 26 – Sun 27 Sep
25° 13°
typical range
30 days — Iowa City
14 forecast + 16 climatology
Mon · Today Thunderstorms
36°22°7.6 mm⌄
Wind14 mph SW
Gusts37 mph
UV index8 – High
Precip chance74%
Sunrise06:31
Sunset19:41
Tue · Tomorrow Mostly cloudy
35°22°0.5 mm⌄
Wind10 mph S
Gusts30 mph
UV index7 – High
Precip chance36%
Sunrise06:32
Sunset19:40
Wednesday 2/9 Sunny
36°26°3%⌄
Wind14 mph SW
Gusts38 mph
UV index8 – Very high
Precip chance3%
Sunrise06:33
Sunset19:38
Thursday 3/9 Sunny
33°23°1.7 mm⌄
Wind17 mph SE
Gusts34 mph
UV index6 – High
Precip chance57%
Sunrise06:34
Sunset19:36
Friday 4/9 Sunny
37°25°5%⌄
Wind11 mph SE
Gusts28 mph
UV index9 – Very high
Precip chance5%
Sunrise06:35
Sunset19:35
Saturday 5/9 Thunderstorms
34°24°0.3 mm⌄
Wind14 mph NE
Gusts25 mph
UV index8 – Very high
Precip chance22%
Sunrise06:36
Sunset19:33
Sunday 6/9 Mostly cloudy
31°22°16%⌄
Wind16 mph SE
Gusts31 mph
UV index8 – Very high
Precip chance16%
Sunrise06:37
Sunset19:31
Monday 7/9 Mostly cloudy
39°19°13%⌄
Wind20 mph SE
Gusts39 mph
UV index8 – Very high
Precip chance13%
Sunrise06:38
Sunset19:29
Tuesday 8/9 Mostly cloudy
27°17°9%⌄
Wind21 mph NW
Gusts35 mph
UV index6 – High
Precip chance9%
Sunrise06:39
Sunset19:28
Wednesday 9/9 Sunny
27°14°4%⌄
Wind8 mph S
Gusts15 mph
UV index7 – High
Precip chance4%
Sunrise06:40
Sunset19:26
Thursday 10/9 Sunny
27°16°17%⌄
Wind14 mph NW
Gusts28 mph
UV index6 – High
Precip chance17%
Sunrise06:41
Sunset19:24
Friday 11/9 Sunny
19°12°2%⌄
Wind19 mph N
Gusts33 mph
UV index5 – Moderate
Precip chance2%
Sunrise06:42
Sunset19:23
Saturday 12/9 Mostly cloudy
27°10°7%⌄
Wind12 mph S
Gusts35 mph
UV index6 – High
Precip chance7%
Sunrise06:43
Sunset19:21
Sunday 13/9 Sunny
22°14°1%⌄
Wind19 mph N
Gusts40 mph
UV index6 – High
Precip chance1%
Sunrise06:44
Sunset19:19
Monday 14/9 Rain (climatological)
28°16°2.9 mm⌄
Day≈25–31°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
27°16°20%⌄
Day≈24–30°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
29°17°20%⌄
Day≈26–32°
Night≈14–20°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
27°15°1.9 mm⌄
Day≈24–30°
Night≈12–18°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
25°14°20%⌄
Day≈22–28°
Night≈11–17°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
25°15°1.8 mm⌄
Day≈22–28°
Night≈12–18°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
26°15°20%⌄
Day≈23–29°
Night≈12–18°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
27°16°20%⌄
Day≈24–30°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
28°16°1.9 mm⌄
Day≈25–31°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
28°16°20%⌄
Day≈25–31°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
26°15°20%⌄
Day≈23–29°
Night≈12–18°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
23°13°2.5 mm⌄
Day≈20–26°
Night≈10–16°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
25°14°20%⌄
Day≈22–28°
Night≈11–17°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
28°16°20%⌄
Day≈25–31°
Night≈13–19°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
28°16°2.5 mm⌄
Day≈25–31°
Night≈13–19°
Precip≈0.9 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 Iowa 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.