Allegan · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Allegan & 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
90°
Sun, Aug 30
Coldest night
49°
Thu, Sep 3
Days with precip
4 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
90° 56°
57% precip chance
Sat 5 – Sun 6 Sep
73° 51°
13% precip chance
Sat 12 – Sun 13 Sep
66° 47°
typical range
Sat 19 – Sun 20 Sep
65° 47°
typical range
30 days — Allegan
14 forecast + 16 climatology
Tue · Today Sunny
79°50°10%⌄
Wind10 mph W
Gusts21 mph
UV index8 – High
Precip chance10%
Sunrise07:01
Sunset20:29
Wed · Tomorrow Sunny
82°59°11.9 mm⌄
Wind15 mph W
Gusts27 mph
UV index7 – High
Precip chance73%
Sunrise07:02
Sunset20:28
Thursday 27/8 Sunny
82°64°2.3 mm⌄
Wind14 mph NW
Gusts23 mph
UV index7 – High
Precip chance57%
Sunrise07:03
Sunset20:26
Friday 28/8 Sunny
83°62°8%⌄
Wind13 mph W
Gusts17 mph
UV index7 – High
Precip chance8%
Sunrise07:04
Sunset20:25
Saturday 29/8 Mostly cloudy
84°56°1.5 mm⌄
Wind11 mph SW
Gusts25 mph
UV index7 – High
Precip chance57%
Sunrise07:05
Sunset20:23
Sunday 30/8 Mostly cloudy
90°65°16%⌄
Wind19 mph SW
Gusts34 mph
UV index8 – Very high
Precip chance16%
Sunrise07:06
Sunset20:21
Monday 31/8 Showers
85°69°2.7 mm⌄
Wind13 mph SW
Gusts26 mph
UV index7 – High
Precip chance70%
Sunrise07:07
Sunset20:20
Tuesday 1/9 Showers
75°58°0.8 mm⌄
Wind18 mph NW
Gusts31 mph
UV index5 – Moderate
Precip chance48%
Sunrise07:08
Sunset20:18
Wednesday 2/9 Mostly cloudy
67°52°13%⌄
Wind12 mph N
Gusts27 mph
UV index5 – Moderate
Precip chance13%
Sunrise07:09
Sunset20:16
Thursday 3/9 Mostly cloudy
66°49°15%⌄
Wind9 mph N
Gusts18 mph
UV index4 – Moderate
Precip chance15%
Sunrise07:10
Sunset20:14
Friday 4/9 Mostly cloudy
58°55°0.7 mm⌄
Wind9 mph NE
Gusts15 mph
UV index3 – Moderate
Precip chance55%
Sunrise07:11
Sunset20:13
Saturday 5/9 Mostly cloudy
69°51°13%⌄
Wind11 mph N
Gusts19 mph
UV index5 – Moderate
Precip chance13%
Sunrise07:12
Sunset20:11
Sunday 6/9 Sunny
73°53°7%⌄
Wind7 mph N
Gusts11 mph
UV index6 – High
Precip chance7%
Sunrise07:13
Sunset20:09
Monday 7/9 Mostly cloudy
69°52°13%⌄
Wind9 mph SE
Gusts18 mph
UV index5 – Moderate
Precip chance13%
Sunrise07:14
Sunset20:07
Tuesday 8/9 Rain (climatological)
67°49°4.7 mm⌄
Day≈61–72°
Night≈44–55°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
71°52°20%⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
74°53°20%⌄
Day≈68–79°
Night≈48–59°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
72°52°3.6 mm⌄
Day≈66–77°
Night≈47–58°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
66°49°20%⌄
Day≈60–71°
Night≈43–54°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
64°47°20%⌄
Day≈58–69°
Night≈42–53°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
63°47°5.2 mm⌄
Day≈57–68°
Night≈41–52°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
70°51°20%⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
71°51°20%⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
70°51°2.4 mm⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
70°51°20%⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
65°48°20%⌄
Day≈59–70°
Night≈42–53°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
63°47°2.4 mm⌄
Day≈57–68°
Night≈41–52°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
66°49°20%⌄
Day≈61–72°
Night≈44–54°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
67°49°20%⌄
Day≈62–72°
Night≈44–55°
Precip≈1.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
71°51°3.6 mm⌄
Day≈65–76°
Night≈46–57°
Precip≈1.7 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 Allegan, 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.