Marion · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Marion & 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°
Thu, Aug 20
Coldest night
17°
Fri, Aug 28
Days with precip
6 / 14
of 14 forecast days
Nicest day
Fri, Aug 28
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
38° 24°
5% precip chance
Sat 29 – Sun 30 Aug
36° 19°
36% precip chance
Sat 5 – Sun 6 Sep
35° 21°
typical range
Sat 12 – Sun 13 Sep
35° 20°
typical range
30 days — Marion
14 forecast + 16 climatology
Thu · Today Drizzle
39°23°10.4 mm⌄
Wind14 mph SW
Gusts26 mph
UV index10 – Very high
Precip chance80%
Sunrise06:21
Sunset19:34
Fri · Tomorrow Sunny
35°22°1.7 mm⌄
Wind7 mph NW
Gusts9 mph
UV index10 – Very high
Precip chance57%
Sunrise06:22
Sunset19:32
Saturday 22/8 Sunny
38°24°3%⌄
Wind7 mph NW
Gusts19 mph
UV index10 – Very high
Precip chance3%
Sunrise06:23
Sunset19:31
Sunday 23/8 Sunny
38°25°5%⌄
Wind5 mph E
Gusts13 mph
UV index10 – Very high
Precip chance5%
Sunrise06:23
Sunset19:30
Monday 24/8 Mostly cloudy
32°22°16.4 mm⌄
Wind9 mph W
Gusts24 mph
UV index7 – High
Precip chance82%
Sunrise06:24
Sunset19:29
Tuesday 25/8 Showers
37°21°4.5 mm⌄
Wind11 mph SW
Gusts30 mph
UV index9 – Very high
Precip chance58%
Sunrise06:25
Sunset19:28
Wednesday 26/8 Sunny
37°23°18.7 mm⌄
Wind14 mph W
Gusts31 mph
UV index9 – Very high
Precip chance71%
Sunrise06:25
Sunset19:26
Thursday 27/8 Sunny
31°19°4.6 mm⌄
Wind9 mph N
Gusts25 mph
UV index8 – Very high
Precip chance57%
Sunrise06:26
Sunset19:25
Friday 28/8 Mostly cloudy
32°17°5%⌄
Wind5 mph NE
Gusts12 mph
UV index8 – Very high
Precip chance5%
Sunrise06:27
Sunset19:24
Saturday 29/8 Sunny
35°19°1%⌄
Wind5 mph SE
Gusts7 mph
UV index8 – Very high
Precip chance1%
Sunrise06:27
Sunset19:23
Sunday 30/8 Sunny
36°22°0.6 mm⌄
Wind7 mph NE
Gusts22 mph
UV index9 – Very high
Precip chance36%
Sunrise06:28
Sunset19:22
Monday 31/8 Mostly cloudy
28°24°0.6 mm⌄
Wind8 mph NW
Gusts18 mph
UV index6 – High
Precip chance51%
Sunrise06:29
Sunset19:20
Tuesday 1/9 Partly cloudy
34°23°0.3 mm⌄
Wind7 mph W
Gusts13 mph
UV index8 – Very high
Precip chance36%
Sunrise06:29
Sunset19:19
Wednesday 2/9 Mostly cloudy
35°24°8%⌄
Wind6 mph W
Gusts18 mph
UV index9 – Very high
Precip chance8%
Sunrise06:30
Sunset19:18
Thursday 3/9 Rain (climatological)
33°20°6.3 mm⌄
Day≈30–36°
Night≈17–23°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
36°22°20%⌄
Day≈33–39°
Night≈19–25°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
35°22°20%⌄
Day≈32–38°
Night≈19–25°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
33°21°14.6 mm⌄
Day≈30–36°
Night≈18–24°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
31°19°12.5 mm⌄
Day≈28–34°
Night≈16–22°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
34°21°20%⌄
Day≈31–37°
Night≈18–24°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
35°22°10.4 mm⌄
Day≈32–38°
Night≈19–25°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
29°18°8.3 mm⌄
Day≈26–32°
Night≈15–21°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
35°21°9.2 mm⌄
Day≈32–38°
Night≈18–24°
Precip≈4.9 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 Marion, 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.