Saint Joseph · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Saint Joseph & 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
44°
Fri, Sep 4
Coldest night
18°
Sun, Aug 23
Days with precip
5 / 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
32° 18°
57% precip chance
Sat 29 – Sun 30 Aug
36° 19°
87% precip chance
Sat 5 – Sun 6 Sep
32° 19°
typical range
Sat 12 – Sun 13 Sep
33° 19°
typical range
30 days — Saint Joseph
14 forecast + 16 climatology
Sat · Today Sunny
32°19°6%⌄
Wind9 mph N
Gusts20 mph
UV index8 – Very high
Precip chance6%
Sunrise06:38
Sunset20:06
Sun · Tomorrow Mostly cloudy
30°18°1.0 mm⌄
Wind11 mph S
Gusts24 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:39
Sunset20:05
Monday 24/8 Sunny
32°19°1.3 mm⌄
Wind13 mph SE
Gusts27 mph
UV index8 – Very high
Precip chance57%
Sunrise06:40
Sunset20:03
Tuesday 25/8 Sunny
36°22°0.1 mm⌄
Wind13 mph S
Gusts26 mph
UV index8 – High
Precip chance17%
Sunrise06:41
Sunset20:02
Wednesday 26/8 Sunny
33°21°4.6 mm⌄
Wind14 mph NW
Gusts22 mph
UV index8 – Very high
Precip chance61%
Sunrise06:42
Sunset20:00
Thursday 27/8 Sunny
31°19°2%⌄
Wind12 mph N
Gusts16 mph
UV index8 – Very high
Precip chance2%
Sunrise06:42
Sunset19:59
Friday 28/8 Mostly cloudy
27°18°8%⌄
Wind14 mph SE
Gusts31 mph
UV index6 – High
Precip chance8%
Sunrise06:43
Sunset19:57
Saturday 29/8 Showers
36°19°3.6 mm⌄
Wind18 mph SE
Gusts40 mph
UV index9 – Very high
Precip chance63%
Sunrise06:44
Sunset19:56
Sunday 30/8 Showers
24°21°15.1 mm⌄
Wind17 mph S
Gusts40 mph
UV index5 – Moderate
Precip chance87%
Sunrise06:45
Sunset19:54
Monday 31/8 Sunny
32°21°0.3 mm⌄
Wind12 mph SW
Gusts34 mph
UV index8 – Very high
Precip chance36%
Sunrise06:46
Sunset19:52
Tuesday 1/9 Mostly cloudy
43°28°17%⌄
Wind21 mph SW
Gusts41 mph
UV index10 – Very high
Precip chance17%
Sunrise06:47
Sunset19:51
Wednesday 2/9 Sunny
42°29°4%⌄
Wind17 mph SW
Gusts36 mph
UV index10 – Very high
Precip chance4%
Sunrise06:48
Sunset19:49
Thursday 3/9 Sunny
44°29°4%⌄
Wind18 mph SW
Gusts32 mph
UV index10 – Very high
Precip chance4%
Sunrise06:49
Sunset19:48
Friday 4/9 Sunny
44°32°3%⌄
Wind19 mph SW
Gusts39 mph
UV index10 – Very high
Precip chance3%
Sunrise06:50
Sunset19:46
Saturday 5/9 Rain (climatological)
30°19°6.3 mm⌄
Day≈27–33°
Night≈16–22°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Rain (climatological)
30°19°6.3 mm⌄
Day≈27–33°
Night≈16–22°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
28°18°20%⌄
Day≈25–31°
Night≈15–21°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
28°17°4.8 mm⌄
Day≈25–31°
Night≈14–20°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
30°19°20%⌄
Day≈27–33°
Night≈16–22°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
33°21°3.8 mm⌄
Day≈30–36°
Night≈18–24°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
33°20°20%⌄
Day≈30–36°
Night≈17–23°
Precip≈2.2 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≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
28°17°4.2 mm⌄
Day≈25–31°
Night≈14–20°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
29°18°20%⌄
Day≈26–32°
Night≈15–21°
Precip≈2.2 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
33°20°5.7 mm⌄
Day≈30–36°
Night≈17–23°
Precip≈2.2 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 Saint Joseph, 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.