Belvidere · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Belvidere & 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
91°
Thu, Sep 3
Coldest night
47°
Wed, Sep 9
Days with precip
5 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
83° 62°
64% precip chance
Sat 5 – Sun 6 Sep
77° 58°
65% precip chance
Sat 12 – Sun 13 Sep
76° 59°
typical range
Sat 19 – Sun 20 Sep
76° 57°
typical range
30 days — Belvidere
14 forecast + 16 climatology
Thu · Today Sunny
87°61°7%⌄
Wind8 mph N
Gusts12 mph
UV index7 – High
Precip chance7%
Sunrise06:15
Sunset19:38
Fri · Tomorrow Sunny
78°60°8%⌄
Wind10 mph SW
Gusts18 mph
UV index7 – High
Precip chance8%
Sunrise06:16
Sunset19:36
Saturday 29/8 Mostly cloudy
76°62°21%⌄
Wind15 mph S
Gusts26 mph
UV index6 – High
Precip chance21%
Sunrise06:17
Sunset19:34
Sunday 30/8 Mostly cloudy
83°67°2.0 mm⌄
Wind19 mph SW
Gusts42 mph
UV index7 – High
Precip chance64%
Sunrise06:18
Sunset19:33
Monday 31/8 Mostly cloudy
88°69°2.6 mm⌄
Wind17 mph SW
Gusts34 mph
UV index7 – High
Precip chance71%
Sunrise06:19
Sunset19:31
Tuesday 1/9 Mostly cloudy
88°78°8%⌄
Wind10 mph SW
Gusts27 mph
UV index8 – Very high
Precip chance8%
Sunrise06:20
Sunset19:29
Wednesday 2/9 Showers
90°75°0.5 mm⌄
Wind11 mph SW
Gusts30 mph
UV index8 – Very high
Precip chance36%
Sunrise06:21
Sunset19:28
Thursday 3/9 Mostly cloudy
91°77°12%⌄
Wind10 mph S
Gusts28 mph
UV index7 – High
Precip chance12%
Sunrise06:22
Sunset19:26
Friday 4/9 Mostly cloudy
91°72°6%⌄
Wind17 mph SW
Gusts38 mph
UV index8 – Very high
Precip chance6%
Sunrise06:23
Sunset19:24
Saturday 5/9 Mostly cloudy
77°64°17%⌄
Wind10 mph NE
Gusts24 mph
UV index6 – High
Precip chance17%
Sunrise06:25
Sunset19:23
Sunday 6/9 Showers
76°58°1.5 mm⌄
Wind14 mph SW
Gusts24 mph
UV index6 – High
Precip chance65%
Sunrise06:26
Sunset19:21
Monday 7/9 Sunny
73°53°0.2 mm⌄
Wind9 mph N
Gusts20 mph
UV index6 – High
Precip chance17%
Sunrise06:27
Sunset19:19
Tuesday 8/9 Mostly cloudy
68°58°21.9 mm⌄
Wind18 mph W
Gusts30 mph
UV index4 – Moderate
Precip chance88%
Sunrise06:28
Sunset19:17
Wednesday 9/9 Sunny
63°47°3.0 mm⌄
Wind12 mph NW
Gusts28 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:29
Sunset19:16
Thursday 10/9 Rain (climatological)
72°57°6.0 mm⌄
Day≈67–77°
Night≈51–62°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
78°60°20%⌄
Day≈72–83°
Night≈55–65°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
76°59°20%⌄
Day≈70–81°
Night≈53–64°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
75°59°4.8 mm⌄
Day≈70–81°
Night≈53–64°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
70°56°20%⌄
Day≈65–75°
Night≈50–61°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
69°55°20%⌄
Day≈64–75°
Night≈50–61°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
68°54°9.0 mm⌄
Day≈63–73°
Night≈49–60°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
71°56°20%⌄
Day≈65–76°
Night≈51–61°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
76°59°20%⌄
Day≈71–82°
Night≈54–65°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
76°59°5.1 mm⌄
Day≈70–81°
Night≈54–64°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
72°57°20%⌄
Day≈67–77°
Night≈51–62°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
72°56°20%⌄
Day≈66–77°
Night≈51–62°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
71°56°5.8 mm⌄
Day≈65–76°
Night≈50–61°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
70°55°20%⌄
Day≈64–75°
Night≈50–61°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
71°56°20%⌄
Day≈66–77°
Night≈51–62°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
75°58°8.3 mm⌄
Day≈69–80°
Night≈53–64°
Precip≈2.7 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 Belvidere, 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.