Cassopolis · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Cassopolis & 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
33°
Wed, Sep 2
Coldest night
15°
Thu, Sep 10
Days with precip
3 / 14
of 14 forecast days
Nicest day
Wed, Sep 9
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
32° 19°
72% precip chance
Sat 12 – Sun 13 Sep
31° 19°
65% precip chance
Sat 19 – Sun 20 Sep
30° 19°
typical range
Sat 26 – Sun 27 Sep
28° 18°
typical range
30 days — Cassopolis
14 forecast + 16 climatology
Tue · Today Mostly cloudy
30°22°0.2 mm⌄
Wind11 mph SW
Gusts31 mph
UV index6 – High
Precip chance30%
Sunrise07:09
Sunset20:18
Wed · Tomorrow Sunny
33°23°0.3 mm⌄
Wind15 mph SW
Gusts27 mph
UV index8 – High
Precip chance36%
Sunrise07:10
Sunset20:16
Thursday 3/9 Sunny
32°22°0.5 mm⌄
Wind13 mph SW
Gusts26 mph
UV index8 – High
Precip chance36%
Sunrise07:11
Sunset20:14
Friday 4/9 Sunny
32°23°1.0 mm⌄
Wind10 mph N
Gusts25 mph
UV index7 – High
Precip chance47%
Sunrise07:12
Sunset20:13
Saturday 5/9 Fog
32°22°0.8 mm⌄
Wind7 mph E
Gusts16 mph
UV index8 – Very high
Precip chance52%
Sunrise07:14
Sunset20:11
Sunday 6/9 Showers
28°19°3.7 mm⌄
Wind9 mph E
Gusts21 mph
UV index7 – High
Precip chance72%
Sunrise07:15
Sunset20:09
Monday 7/9 Mostly cloudy
24°17°16%⌄
Wind9 mph SE
Gusts16 mph
UV index5 – Moderate
Precip chance16%
Sunrise07:16
Sunset20:08
Tuesday 8/9 Mostly cloudy
28°20°12%⌄
Wind10 mph W
Gusts13 mph
UV index7 – High
Precip chance12%
Sunrise07:17
Sunset20:06
Wednesday 9/9 Sunny
25°16°6%⌄
Wind13 mph NW
Gusts21 mph
UV index6 – High
Precip chance6%
Sunrise07:18
Sunset20:04
Thursday 10/9 Sunny
27°15°11%⌄
Wind11 mph SE
Gusts24 mph
UV index7 – High
Precip chance11%
Sunrise07:19
Sunset20:02
Friday 11/9 Partly cloudy
28°16°8%⌄
Wind10 mph SE
Gusts24 mph
UV index7 – High
Precip chance8%
Sunrise07:20
Sunset20:01
Saturday 12/9 Sunny
29°19°5%⌄
Wind8 mph S
Gusts17 mph
UV index7 – High
Precip chance5%
Sunrise07:21
Sunset19:59
Sunday 13/9 Showers
31°20°3.7 mm⌄
Wind10 mph S
Gusts20 mph
UV index7 – High
Precip chance65%
Sunrise07:22
Sunset19:57
Monday 14/9 Sunny
32°24°7%⌄
Wind10 mph SE
Gusts17 mph
UV index8 – Very high
Precip chance7%
Sunrise07:23
Sunset19:55
Tuesday 15/9 Light rain (climatological)
31°21°1.7 mm⌄
Day≈28–34°
Night≈18–24°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Light rain (climatological)
29°20°2.0 mm⌄
Day≈26–32°
Night≈17–23°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Light rain (climatological)
27°18°2.0 mm⌄
Day≈24–30°
Night≈15–21°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
33°22°20%⌄
Day≈30–36°
Night≈19–25°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
33°22°2.8 mm⌄
Day≈30–36°
Night≈19–25°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
30°20°20%⌄
Day≈27–33°
Night≈17–23°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
28°19°20%⌄
Day≈25–31°
Night≈16–22°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
27°18°2.9 mm⌄
Day≈24–30°
Night≈15–21°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
26°18°20%⌄
Day≈23–29°
Night≈15–21°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
31°21°20%⌄
Day≈28–34°
Night≈18–24°
Precip≈0.9 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
32°21°2.5 mm⌄
Day≈29–35°
Night≈18–24°
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 Cassopolis, 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.