Mascoutah · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Mascoutah & 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
104°
Mon, Aug 31
Coldest night
60°
Thu, Sep 3
Days with precip
5 / 14
of 14 forecast days
Nicest day
Sun, Aug 23
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
86° 67°
13% precip chance
Sat 29 – Sun 30 Aug
100° 73°
80% precip chance
Sat 5 – Sun 6 Sep
87° 65°
typical range
Sat 12 – Sun 13 Sep
90° 65°
typical range
30 days — Mascoutah
14 forecast + 16 climatology
Fri · Today Sunny
92°66°6%⌄
Wind8 mph E
Gusts15 mph
UV index8 – High
Precip chance6%
Sunrise06:18
Sunset19:45
Sat · Tomorrow Sunny
86°70°6%⌄
Wind10 mph NW
Gusts17 mph
UV index8 – High
Precip chance6%
Sunrise06:19
Sunset19:44
Sunday 23/8 Mostly cloudy
79°67°13%⌄
Wind9 mph NE
Gusts20 mph
UV index8 – Very high
Precip chance13%
Sunrise06:20
Sunset19:42
Monday 24/8 Mostly cloudy
81°63°4.0 mm⌄
Wind11 mph E
Gusts26 mph
UV index8 – High
Precip chance69%
Sunrise06:21
Sunset19:41
Tuesday 25/8 Sunny
86°67°21%⌄
Wind12 mph SE
Gusts22 mph
UV index7 – High
Precip chance21%
Sunrise06:22
Sunset19:40
Wednesday 26/8 Mostly cloudy
85°71°1.2 mm⌄
Wind8 mph NE
Gusts12 mph
UV index6 – High
Precip chance63%
Sunrise06:23
Sunset19:38
Thursday 27/8 Sunny
88°72°1.3 mm⌄
Wind10 mph NE
Gusts19 mph
UV index8 – Very high
Precip chance57%
Sunrise06:24
Sunset19:37
Friday 28/8 Sunny
90°68°7%⌄
Wind12 mph SE
Gusts26 mph
UV index8 – Very high
Precip chance7%
Sunrise06:25
Sunset19:35
Saturday 29/8 Showers
90°73°14.5 mm⌄
Wind19 mph SE
Gusts35 mph
UV index7 – High
Precip chance80%
Sunrise06:26
Sunset19:34
Sunday 30/8 Mostly cloudy
100°76°7%⌄
Wind17 mph S
Gusts37 mph
UV index9 – Very high
Precip chance7%
Sunrise06:26
Sunset19:32
Monday 31/8 Sunny
104°76°0.9 mm⌄
Wind17 mph S
Gusts40 mph
UV index10 – Very high
Precip chance36%
Sunrise06:27
Sunset19:31
Tuesday 1/9 Sunny
100°69°2.2 mm⌄
Wind17 mph S
Gusts36 mph
UV index9 – Very high
Precip chance57%
Sunrise06:28
Sunset19:29
Wednesday 2/9 Sunny
95°71°3%⌄
Wind12 mph NE
Gusts26 mph
UV index8 – Very high
Precip chance3%
Sunrise06:29
Sunset19:28
Thursday 3/9 Sunny
88°60°0.5 mm⌄
Wind10 mph NE
Gusts24 mph
UV index8 – Very high
Precip chance36%
Sunrise06:30
Sunset19:26
Friday 4/9 Rain (climatological)
84°64°3.2 mm⌄
Day≈78–89°
Night≈58–69°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
86°65°20%⌄
Day≈81–91°
Night≈60–70°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
87°66°20%⌄
Day≈82–92°
Night≈60–71°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Rain (climatological)
88°66°5.9 mm⌄
Day≈82–93°
Night≈60–71°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
79°61°20%⌄
Day≈74–85°
Night≈55–66°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
78°60°20%⌄
Day≈72–83°
Night≈55–65°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
79°60°4.3 mm⌄
Day≈73–84°
Night≈55–66°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
84°64°20%⌄
Day≈78–89°
Night≈58–69°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
90°67°20%⌄
Day≈84–95°
Night≈62–73°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
85°65°6.3 mm⌄
Day≈80–91°
Night≈59–70°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
85°64°20%⌄
Day≈79–90°
Night≈59–70°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
83°63°20%⌄
Day≈78–89°
Night≈58–69°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
77°60°7.2 mm⌄
Day≈72–83°
Night≈54–65°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
80°61°20%⌄
Day≈74–85°
Night≈56–67°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
85°64°20%⌄
Day≈80–90°
Night≈59–70°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
86°65°7.0 mm⌄
Day≈80–91°
Night≈59–70°
Precip≈2.1 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 Mascoutah, 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.