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
83°
Thu, Aug 27
Coldest night
51°
Sun, Sep 6
Days with precip
8 / 14
of 14 forecast days
Nicest day
Wed, Aug 26
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
76° 52°
91% precip chance
Sat 5 – Sun 6 Sep
61° 51°
79% precip chance
Sat 12 – Sun 13 Sep
59° 47°
typical range
Sat 19 – Sun 20 Sep
62° 46°
typical range
30 days — Marion
14 forecast + 16 climatology
Tue · Today Sunny
73°58°20%⌄
Wind13 mph NW
Gusts24 mph
UV index5 – Moderate
Precip chance20%
Sunrise06:25
Sunset19:56
Wed · Tomorrow Mostly cloudy
78°57°11%⌄
Wind7 mph SW
Gusts14 mph
UV index7 – High
Precip chance11%
Sunrise06:26
Sunset19:54
Thursday 27/8 Sunny
83°63°5.9 mm⌄
Wind11 mph W
Gusts21 mph
UV index5 – Moderate
Precip chance70%
Sunrise06:27
Sunset19:52
Friday 28/8 Sunny
80°60°0.6 mm⌄
Wind7 mph N
Gusts13 mph
UV index7 – High
Precip chance36%
Sunrise06:28
Sunset19:51
Saturday 29/8 Sunny
76°52°0.6 mm⌄
Wind7 mph W
Gusts14 mph
UV index6 – High
Precip chance40%
Sunrise06:29
Sunset19:49
Sunday 30/8 Mostly cloudy
69°64°11.3 mm⌄
Wind9 mph S
Gusts21 mph
UV index5 – Moderate
Precip chance91%
Sunrise06:31
Sunset19:47
Monday 31/8 Fog
72°60°0.1 mm⌄
Wind8 mph N
Gusts17 mph
UV index6 – High
Precip chance30%
Sunrise06:32
Sunset19:46
Tuesday 1/9 Showers
80°59°23.8 mm⌄
Wind15 mph W
Gusts31 mph
UV index6 – High
Precip chance90%
Sunrise06:33
Sunset19:44
Wednesday 2/9 Showers
62°54°3.3 mm⌄
Wind10 mph NW
Gusts18 mph
UV index3 – Moderate
Precip chance87%
Sunrise06:34
Sunset19:42
Thursday 3/9 Showers
60°51°1.9 mm⌄
Wind9 mph W
Gusts18 mph
UV index4 – Moderate
Precip chance76%
Sunrise06:35
Sunset19:40
Friday 4/9 Showers
63°52°4.3 mm⌄
Wind8 mph NW
Gusts15 mph
UV index4 – Moderate
Precip chance83%
Sunrise06:36
Sunset19:39
Saturday 5/9 Showers
61°51°3.1 mm⌄
Wind11 mph NW
Gusts19 mph
UV index4 – Moderate
Precip chance79%
Sunrise06:37
Sunset19:37
Sunday 6/9 Showers
60°51°1.5 mm⌄
Wind11 mph N
Gusts20 mph
UV index4 – Moderate
Precip chance66%
Sunrise06:38
Sunset19:35
Monday 7/9 Showers
60°51°0.6 mm⌄
Wind11 mph N
Gusts16 mph
UV index4 – Moderate
Precip chance52%
Sunrise06:39
Sunset19:33
Tuesday 8/9 Rain (climatological)
63°49°7.0 mm⌄
Day≈58–69°
Night≈44–55°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
64°50°20%⌄
Day≈58–69°
Night≈44–55°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
67°52°20%⌄
Day≈62–73°
Night≈47–58°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
64°50°14.1 mm⌄
Day≈59–69°
Night≈45–55°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
59°47°20%⌄
Day≈53–64°
Night≈41–52°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
59°47°20%⌄
Day≈54–65°
Night≈42–53°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
56°45°15.7 mm⌄
Day≈50–61°
Night≈40–51°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
60°47°20%⌄
Day≈54–65°
Night≈42–53°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
63°49°20%⌄
Day≈58–68°
Night≈44–55°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
67°52°11.2 mm⌄
Day≈61–72°
Night≈46–57°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
63°49°20%⌄
Day≈57–68°
Night≈44–55°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
62°49°20%⌄
Day≈56–67°
Night≈43–54°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
57°46°14.5 mm⌄
Day≈52–63°
Night≈41–51°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
56°45°20%⌄
Day≈51–62°
Night≈40–51°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
60°48°20%⌄
Day≈55–66°
Night≈42–53°
Precip≈4.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
63°49°11.2 mm⌄
Day≈58–68°
Night≈44–55°
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.