Garrison · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Garrison & 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
98°
Fri, Aug 28
Coldest night
57°
Mon, Aug 17
Days with precip
0 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
88° 65°
5% precip chance
Sat 29 – Sun 30 Aug
97° 75°
36% precip chance
Sat 5 – Sun 6 Sep
75° 55°
typical range
Sat 12 – Sun 13 Sep
72° 56°
typical range
30 days — Garrison
14 forecast + 16 climatology
Mon · Today Sunny
82°57°6%⌄
Wind31 mph NW
Gusts39 mph
UV index6 – High
Precip chance6%
Sunrise06:44
Sunset20:55
Tue · Tomorrow Sunny
76°60°17%⌄
Wind13 mph NE
Gusts24 mph
UV index6 – High
Precip chance17%
Sunrise06:45
Sunset20:53
Wednesday 19/8 Sunny
83°63°17%⌄
Wind11 mph NE
Gusts23 mph
UV index6 – High
Precip chance17%
Sunrise06:46
Sunset20:51
Thursday 20/8 Mostly cloudy
85°66°6%⌄
Wind11 mph N
Gusts15 mph
UV index6 – High
Precip chance6%
Sunrise06:48
Sunset20:49
Friday 21/8 Sunny
84°65°3%⌄
Wind16 mph NE
Gusts28 mph
UV index7 – High
Precip chance3%
Sunrise06:49
Sunset20:48
Saturday 22/8 Sunny
83°65°4%⌄
Wind12 mph E
Gusts26 mph
UV index7 – High
Precip chance4%
Sunrise06:50
Sunset20:46
Sunday 23/8 Mostly cloudy
88°74°5%⌄
Wind19 mph SE
Gusts26 mph
UV index8 – Very high
Precip chance5%
Sunrise06:52
Sunset20:44
Monday 24/8 Sunny
81°70°1%⌄
Wind16 mph NW
Gusts31 mph
UV index7 – High
Precip chance1%
Sunrise06:53
Sunset20:42
Tuesday 25/8 Sunny
82°68°1%⌄
Wind14 mph N
Gusts18 mph
UV index7 – High
Precip chance1%
Sunrise06:54
Sunset20:40
Wednesday 26/8 Sunny
85°65°3%⌄
Wind11 mph SE
Gusts20 mph
UV index7 – High
Precip chance3%
Sunrise06:56
Sunset20:38
Thursday 27/8 Sunny
91°68°0.9 mm⌄
Wind18 mph S
Gusts35 mph
UV index8 – Very high
Precip chance36%
Sunrise06:57
Sunset20:36
Friday 28/8 Mostly cloudy
98°76°0.1 mm⌄
Wind19 mph S
Gusts37 mph
UV index9 – Very high
Precip chance17%
Sunrise06:59
Sunset20:34
Saturday 29/8 Thunderstorms
97°75°0.4 mm⌄
Wind15 mph SE
Gusts30 mph
UV index8 – Very high
Precip chance36%
Sunrise07:00
Sunset20:32
Sunday 30/8 Mostly cloudy
93°77°0.6 mm⌄
Wind11 mph N
Gusts19 mph
UV index8 – Very high
Precip chance36%
Sunrise07:01
Sunset20:30
Monday 31/8 Light rain (climatological)
85°67°1.5 mm⌄
Day≈80–91°
Night≈62–73°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
78°60°20%⌄
Day≈73–84°
Night≈54–65°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Partly cloudy (climatological)
79°60°20%⌄
Day≈73–84°
Night≈55–65°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Light rain (climatological)
76°58°1.7 mm⌄
Day≈70–81°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
76°58°20%⌄
Day≈71–81°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
75°58°20%⌄
Day≈69–80°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Light rain (climatological)
70°55°1.9 mm⌄
Day≈65–76°
Night≈50–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
76°58°20%⌄
Day≈70–81°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
79°60°20%⌄
Day≈73–84°
Night≈55–65°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Light rain (climatological)
82°62°1.8 mm⌄
Day≈77–87°
Night≈57–67°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
76°58°20%⌄
Day≈70–81°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
77°59°20%⌄
Day≈71–82°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Light rain (climatological)
72°56°2.0 mm⌄
Day≈67–78°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
71°56°20%⌄
Day≈66–77°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
78°60°20%⌄
Day≈73–83°
Night≈54–65°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Light rain (climatological)
78°60°2.0 mm⌄
Day≈73–83°
Night≈54–65°
Precip≈0.6 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 Garrison, 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.