Belmont · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Belmont & 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
38°
Wed, Sep 9
Coldest night
11°
Sun, Sep 13
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sat, Sep 12
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
26° 13°
48% precip chance
Sat 12 – Sun 13 Sep
29° 11°
5% precip chance
Sat 19 – Sun 20 Sep
29° 15°
typical range
Sat 26 – Sun 27 Sep
28° 16°
typical range
30 days — Belmont
14 forecast + 16 climatology
Tue · Today Mostly cloudy
34°19°9%⌄
Wind12 mph W
Gusts24 mph
UV index7 – High
Precip chance9%
Sunrise07:06
Sunset20:17
Wed · Tomorrow Mostly cloudy
35°23°8%⌄
Wind18 mph SW
Gusts26 mph
UV index6 – High
Precip chance8%
Sunrise07:08
Sunset20:16
Thursday 3/9 Fog
30°21°9.2 mm⌄
Wind9 mph NW
Gusts19 mph
UV index7 – High
Precip chance82%
Sunrise07:09
Sunset20:14
Friday 4/9 Mostly cloudy
28°18°4.6 mm⌄
Wind11 mph E
Gusts19 mph
UV index5 – Moderate
Precip chance78%
Sunrise07:10
Sunset20:12
Saturday 5/9 Mostly cloudy
24°17°0.9 mm⌄
Wind13 mph E
Gusts25 mph
UV index6 – High
Precip chance48%
Sunrise07:11
Sunset20:10
Sunday 6/9 Fog
26°13°9%⌄
Wind11 mph E
Gusts22 mph
UV index7 – High
Precip chance9%
Sunrise07:12
Sunset20:09
Monday 7/9 Mostly cloudy
27°16°15%⌄
Wind13 mph SW
Gusts20 mph
UV index6 – High
Precip chance15%
Sunrise07:13
Sunset20:07
Tuesday 8/9 Mostly cloudy
31°21°0.9 mm⌄
Wind9 mph SW
Gusts20 mph
UV index8 – Very high
Precip chance56%
Sunrise07:14
Sunset20:05
Wednesday 9/9 Sunny
38°20°9%⌄
Wind13 mph SW
Gusts30 mph
UV index9 – Very high
Precip chance9%
Sunrise07:15
Sunset20:03
Thursday 10/9 Mostly cloudy
30°18°7%⌄
Wind19 mph W
Gusts30 mph
UV index6 – High
Precip chance7%
Sunrise07:16
Sunset20:02
Friday 11/9 Sunny
24°14°2%⌄
Wind17 mph NW
Gusts23 mph
UV index6 – High
Precip chance2%
Sunrise07:17
Sunset20:00
Saturday 12/9 Sunny
23°11°3%⌄
Wind7 mph N
Gusts13 mph
UV index6 – High
Precip chance3%
Sunrise07:18
Sunset19:58
Sunday 13/9 Sunny
29°11°5%⌄
Wind14 mph SW
Gusts32 mph
UV index7 – High
Precip chance5%
Sunrise07:20
Sunset19:56
Monday 14/9 Mostly cloudy
23°15°6%⌄
Wind18 mph W
Gusts40 mph
UV index6 – High
Precip chance6%
Sunrise07:21
Sunset19:54
Tuesday 15/9 Rain (climatological)
28°16°2.5 mm⌄
Day≈25–31°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
31°18°20%⌄
Day≈28–34°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
32°19°20%⌄
Day≈29–35°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
29°17°3.9 mm⌄
Day≈26–32°
Night≈14–20°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
29°17°20%⌄
Day≈26–32°
Night≈14–20°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
26°15°20%⌄
Day≈23–29°
Night≈12–18°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
28°16°4.0 mm⌄
Day≈25–31°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
31°18°20%⌄
Day≈28–34°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Light rain (climatological)
31°19°1.9 mm⌄
Day≈28–34°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
30°18°20%⌄
Day≈27–33°
Night≈15–21°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
28°17°20%⌄
Day≈25–31°
Night≈14–20°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
27°16°3.2 mm⌄
Day≈24–30°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
27°16°20%⌄
Day≈24–30°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
28°16°20%⌄
Day≈25–31°
Night≈13–19°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Light rain (climatological)
31°18°1.9 mm⌄
Day≈28–34°
Night≈15–21°
Precip≈1.3 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 Belmont, 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.