Onawa · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Onawa & 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
96°
Sun, Aug 30
Coldest night
54°
Mon, Sep 7
Days with precip
4 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
96° 67°
57% precip chance
Sat 5 – Sun 6 Sep
81° 55°
48% precip chance
Sat 12 – Sun 13 Sep
76° 53°
typical range
Sat 19 – Sun 20 Sep
75° 53°
typical range
30 days — Onawa
14 forecast + 16 climatology
Tue · Today Mostly cloudy
89°64°3.0 mm⌄
Wind17 mph W
Gusts32 mph
UV index7 – High
Precip chance73%
Sunrise06:42
Sunset20:10
Wed · Tomorrow Sunny
87°66°3%⌄
Wind13 mph NW
Gusts19 mph
UV index7 – High
Precip chance3%
Sunrise06:43
Sunset20:08
Thursday 27/8 Sunny
88°65°1%⌄
Wind8 mph W
Gusts14 mph
UV index7 – High
Precip chance1%
Sunrise06:44
Sunset20:06
Friday 28/8 Showers
85°65°9.4 mm⌄
Wind16 mph SE
Gusts35 mph
UV index6 – High
Precip chance80%
Sunrise06:45
Sunset20:05
Saturday 29/8 Sunny
91°67°1.2 mm⌄
Wind23 mph S
Gusts44 mph
UV index8 – Very high
Precip chance57%
Sunrise06:46
Sunset20:03
Sunday 30/8 Sunny
96°69°4%⌄
Wind8 mph E
Gusts19 mph
UV index9 – Very high
Precip chance4%
Sunrise06:48
Sunset20:02
Monday 31/8 Mostly cloudy
93°74°7%⌄
Wind17 mph NW
Gusts29 mph
UV index8 – Very high
Precip chance7%
Sunrise06:49
Sunset20:00
Tuesday 1/9 Sunny
83°61°1%⌄
Wind11 mph NW
Gusts23 mph
UV index7 – High
Precip chance1%
Sunrise06:50
Sunset19:58
Wednesday 2/9 Sunny
89°62°4%⌄
Wind21 mph E
Gusts40 mph
UV index8 – Very high
Precip chance4%
Sunrise06:51
Sunset19:57
Thursday 3/9 Mostly cloudy
85°60°1.9 mm⌄
Wind20 mph SE
Gusts40 mph
UV index7 – High
Precip chance57%
Sunrise06:52
Sunset19:55
Friday 4/9 Sunny
84°58°2%⌄
Wind15 mph NW
Gusts27 mph
UV index7 – High
Precip chance2%
Sunrise06:53
Sunset19:53
Saturday 5/9 Mostly cloudy
81°55°9%⌄
Wind18 mph SE
Gusts36 mph
UV index7 – High
Precip chance9%
Sunrise06:54
Sunset19:51
Sunday 6/9 Mostly cloudy
76°58°0.7 mm⌄
Wind21 mph SE
Gusts43 mph
UV index5 – Moderate
Precip chance48%
Sunrise06:55
Sunset19:50
Monday 7/9 Sunny
73°54°0.2 mm⌄
Wind15 mph N
Gusts34 mph
UV index6 – High
Precip chance17%
Sunrise06:56
Sunset19:48
Tuesday 8/9 Rain (climatological)
75°54°2.5 mm⌄
Day≈70–81°
Night≈49–60°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
83°59°20%⌄
Day≈78–88°
Night≈53–64°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
80°57°20%⌄
Day≈75–86°
Night≈52–63°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
81°57°3.7 mm⌄
Day≈75–86°
Night≈52–63°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
76°55°20%⌄
Day≈71–81°
Night≈49–60°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
73°53°20%⌄
Day≈67–78°
Night≈47–58°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
76°55°3.6 mm⌄
Day≈71–82°
Night≈49–60°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
80°57°20%⌄
Day≈75–86°
Night≈52–62°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
82°58°20%⌄
Day≈77–88°
Night≈53–64°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
81°58°2.2 mm⌄
Day≈76–86°
Night≈52–63°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
78°56°20%⌄
Day≈73–83°
Night≈50–61°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
75°54°20%⌄
Day≈70–81°
Night≈49–60°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
74°53°1.9 mm⌄
Day≈68–79°
Night≈48–59°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
74°54°20%⌄
Day≈69–80°
Night≈48–59°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
77°55°20%⌄
Day≈72–83°
Night≈50–61°
Precip≈1.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
82°58°1.9 mm⌄
Day≈76–87°
Night≈53–64°
Precip≈1.4 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 Onawa, 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.