Alvin · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Alvin & 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
105°
Sun, Aug 23
Coldest night
76°
Mon, Aug 24
Days with precip
0 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
98° 78°
7% precip chance
Sat 5 – Sun 6 Sep
99° 74°
typical range
Sat 12 – Sun 13 Sep
96° 74°
typical range
Sat 19 – Sun 20 Sep
98° 74°
typical range
30 days — Alvin
14 forecast + 16 climatology
Sun · Today Sunny
105°77°5%⌄
Wind16 mph SE
Gusts27 mph
UV index10 – Very high
Precip chance5%
Sunrise06:53
Sunset19:53
Mon · Tomorrow Mostly cloudy
102°76°8%⌄
Wind16 mph SE
Gusts23 mph
UV index10 – Very high
Precip chance8%
Sunrise06:54
Sunset19:52
Tuesday 25/8 Sunny
100°77°4%⌄
Wind17 mph SE
Gusts26 mph
UV index11 – Very high
Precip chance4%
Sunrise06:54
Sunset19:51
Wednesday 26/8 Sunny
101°77°4%⌄
Wind17 mph SE
Gusts28 mph
UV index11 – Very high
Precip chance4%
Sunrise06:55
Sunset19:50
Thursday 27/8 Sunny
101°78°7%⌄
Wind19 mph SE
Gusts26 mph
UV index9 – Very high
Precip chance7%
Sunrise06:55
Sunset19:49
Friday 28/8 Sunny
99°78°5%⌄
Wind18 mph SE
Gusts24 mph
UV index9 – Very high
Precip chance5%
Sunrise06:56
Sunset19:48
Saturday 29/8 Sunny
98°78°7%⌄
Wind16 mph SE
Gusts25 mph
UV index9 – Very high
Precip chance7%
Sunrise06:56
Sunset19:46
Sunday 30/8 Sunny
96°78°6%⌄
Wind20 mph SE
Gusts29 mph
UV index9 – Very high
Precip chance6%
Sunrise06:57
Sunset19:45
Monday 31/8 Sunny
99°78°6%⌄
Wind15 mph SE
Gusts26 mph
UV index9 – Very high
Precip chance6%
Sunrise06:58
Sunset19:44
Tuesday 1/9 Sunny
98°78°6%⌄
Wind16 mph SE
Gusts25 mph
UV index9 – Very high
Precip chance6%
Sunrise06:58
Sunset19:43
Wednesday 2/9 Sunny
98°78°12%⌄
Wind15 mph SE
Gusts22 mph
UV index8 – Very high
Precip chance12%
Sunrise06:59
Sunset19:42
Thursday 3/9 Sunny
99°77°5%⌄
Wind16 mph SE
Gusts27 mph
UV index9 – Very high
Precip chance5%
Sunrise06:59
Sunset19:41
Friday 4/9 Sunny
98°77°6%⌄
Wind16 mph SE
Gusts23 mph
UV index9 – Very high
Precip chance6%
Sunrise07:00
Sunset19:39
Saturday 5/9 Partly cloudy
99°78°9%⌄
Wind19 mph SE
Gusts30 mph
UV index8 – Very high
Precip chance9%
Sunrise07:00
Sunset19:38
Sunday 6/9 Light rain (climatological)
94°74°1.3 mm⌄
Day≈88–99°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
102°79°20%⌄
Day≈97–108°
Night≈73–84°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
103°79°20%⌄
Day≈97–108°
Night≈74–84°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Light rain (climatological)
100°77°1.9 mm⌄
Day≈95–105°
Night≈72–83°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
97°75°20%⌄
Day≈91–102°
Night≈70–81°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
91°72°20%⌄
Day≈86–97°
Night≈67–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Light rain (climatological)
94°74°1.5 mm⌄
Day≈89–100°
Night≈69–80°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
96°75°20%⌄
Day≈91–102°
Night≈70–81°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
101°78°20%⌄
Day≈95–106°
Night≈72–83°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Light rain (climatological)
101°78°1.6 mm⌄
Day≈95–106°
Night≈72–83°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
98°76°20%⌄
Day≈93–104°
Night≈71–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
93°73°20%⌄
Day≈88–99°
Night≈68–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Light rain (climatological)
93°73°1.3 mm⌄
Day≈87–98°
Night≈68–78°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
94°74°20%⌄
Day≈89–100°
Night≈69–79°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
98°76°20%⌄
Day≈93–103°
Night≈71–82°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Light rain (climatological)
102°78°1.6 mm⌄
Day≈96–107°
Night≈73–84°
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 Alvin, 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.