Ossian · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Ossian & 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
87°
Mon, Sep 14
Coldest night
55°
Sat, Sep 12
Days with precip
3 / 14
of 14 forecast days
Nicest day
Sat, Sep 12
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
84° 64°
73% precip chance
Sat 12 – Sun 13 Sep
80° 55°
7% precip chance
Sat 19 – Sun 20 Sep
83° 67°
typical range
Sat 26 – Sun 27 Sep
82° 66°
typical range
30 days — Ossian
14 forecast + 16 climatology
Fri · Today Sunny
86°75°1.0 mm⌄
Wind11 mph N
Gusts21 mph
UV index7 – High
Precip chance50%
Sunrise07:10
Sunset20:08
Sat · Tomorrow Sunny
84°68°4.8 mm⌄
Wind11 mph NE
Gusts24 mph
UV index7 – High
Precip chance73%
Sunrise07:11
Sunset20:07
Sunday 6/9 Sunny
76°64°10%⌄
Wind11 mph NE
Gusts24 mph
UV index7 – High
Precip chance10%
Sunrise07:12
Sunset20:05
Monday 7/9 Sunny
76°58°13%⌄
Wind9 mph E
Gusts25 mph
UV index6 – High
Precip chance13%
Sunrise07:13
Sunset20:03
Tuesday 8/9 Mostly cloudy
77°61°19%⌄
Wind9 mph SE
Gusts19 mph
UV index6 – High
Precip chance19%
Sunrise07:14
Sunset20:02
Wednesday 9/9 Sunny
84°70°0.9 mm⌄
Wind15 mph SW
Gusts33 mph
UV index7 – High
Precip chance51%
Sunrise07:15
Sunset20:00
Thursday 10/9 Mostly cloudy
80°70°1.7 mm⌄
Wind9 mph N
Gusts22 mph
UV index7 – High
Precip chance58%
Sunrise07:16
Sunset19:58
Friday 11/9 Sunny
70°59°0.3 mm⌄
Wind8 mph NE
Gusts21 mph
UV index6 – High
Precip chance36%
Sunrise07:17
Sunset19:57
Saturday 12/9 Sunny
72°55°7%⌄
Wind9 mph E
Gusts24 mph
UV index6 – High
Precip chance7%
Sunrise07:18
Sunset19:55
Sunday 13/9 Sunny
80°60°5%⌄
Wind9 mph S
Gusts23 mph
UV index7 – High
Precip chance5%
Sunrise07:19
Sunset19:53
Monday 14/9 Sunny
87°71°9%⌄
Wind10 mph W
Gusts24 mph
UV index7 – High
Precip chance9%
Sunrise07:20
Sunset19:52
Tuesday 15/9 Showers
84°70°0.4 mm⌄
Wind15 mph SW
Gusts30 mph
UV index7 – High
Precip chance36%
Sunrise07:21
Sunset19:50
Wednesday 16/9 Sunny
82°68°4%⌄
Wind7 mph NE
Gusts14 mph
UV index7 – High
Precip chance4%
Sunrise07:22
Sunset19:48
Thursday 17/9 Sunny
74°62°1.2 mm⌄
Wind11 mph SE
Gusts19 mph
UV index5 – Moderate
Precip chance57%
Sunrise07:23
Sunset19:47
Friday 18/9 Rain (climatological)
80°66°2.6 mm⌄
Day≈75–86°
Night≈60–71°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
83°67°20%⌄
Day≈78–89°
Night≈62–73°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
83°67°20%⌄
Day≈77–88°
Night≈62–73°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
82°67°2.2 mm⌄
Day≈77–88°
Night≈62–72°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
80°65°20%⌄
Day≈74–85°
Night≈60–71°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
74°62°20%⌄
Day≈68–79°
Night≈56–67°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
74°62°2.6 mm⌄
Day≈69–79°
Night≈56–67°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
80°66°20%⌄
Day≈75–86°
Night≈60–71°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
81°66°20%⌄
Day≈75–86°
Night≈60–71°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
82°67°2.2 mm⌄
Day≈77–88°
Night≈62–72°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
81°66°20%⌄
Day≈76–87°
Night≈61–72°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
79°65°20%⌄
Day≈73–84°
Night≈59–70°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
77°64°2.5 mm⌄
Day≈72–83°
Night≈58–69°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
61°51°20%⌄
Day≈56–67°
Night≈45–56°
Precip≈0.9 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Partly cloudy (climatological)
70°56°20%⌄
Day≈64–75°
Night≈50–61°
Precip≈0.9 in / October
(climatological)Typical range for these dates · 1991–2020
Saturday 3/10 Light rain (climatological)
71°56°1.9 mm⌄
Day≈65–76°
Night≈51–62°
Precip≈0.9 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 Ossian, 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.