Granite Falls · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Granite Falls & 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
100°
Fri, Sep 11
Coldest night
57°
Thu, Sep 10
Days with precip
8 / 14
of 14 forecast days
Nicest day
Thu, Sep 10
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
98° 70°
66% precip chance
Sat 12 – Sun 13 Sep
95° 60°
69% precip chance
Sat 19 – Sun 20 Sep
91° 65°
typical range
Sat 26 – Sun 27 Sep
89° 66°
typical range
30 days — Granite Falls
14 forecast + 16 climatology
Wed · Today Sunny
86°62°3.3 mm⌄
Wind9 mph E
Gusts20 mph
UV index7 – High
Precip chance62%
Sunrise06:45
Sunset19:57
Thu · Tomorrow Sunny
95°71°1.6 mm⌄
Wind14 mph NE
Gusts29 mph
UV index6 – Moderate
Precip chance57%
Sunrise06:46
Sunset19:56
Friday 4/9 Sunny
96°69°2%⌄
Wind14 mph E
Gusts34 mph
UV index7 – High
Precip chance2%
Sunrise06:48
Sunset19:54
Saturday 5/9 Showers
90°70°2.5 mm⌄
Wind17 mph NW
Gusts26 mph
UV index5 – Moderate
Precip chance63%
Sunrise06:49
Sunset19:52
Sunday 6/9 Sunny
98°72°6.7 mm⌄
Wind21 mph SE
Gusts37 mph
UV index7 – High
Precip chance66%
Sunrise06:50
Sunset19:50
Monday 7/9 Mostly cloudy
82°69°2.9 mm⌄
Wind18 mph SE
Gusts33 mph
UV index6 – High
Precip chance77%
Sunrise06:51
Sunset19:48
Tuesday 8/9 Sunny
86°74°5%⌄
Wind15 mph NW
Gusts30 mph
UV index7 – High
Precip chance5%
Sunrise06:52
Sunset19:46
Wednesday 9/9 Sunny
84°64°1%⌄
Wind11 mph NW
Gusts18 mph
UV index7 – High
Precip chance1%
Sunrise06:54
Sunset19:45
Thursday 10/9 Sunny
81°57°4%⌄
Wind10 mph SE
Gusts24 mph
UV index6 – High
Precip chance4%
Sunrise06:55
Sunset19:43
Friday 11/9 Mostly cloudy
100°64°1.4 mm⌄
Wind19 mph SE
Gusts36 mph
UV index8 – Very high
Precip chance57%
Sunrise06:56
Sunset19:41
Saturday 12/9 Showers
95°71°7.3 mm⌄
Wind14 mph W
Gusts22 mph
UV index8 – Very high
Precip chance69%
Sunrise06:57
Sunset19:39
Sunday 13/9 Sunny
76°60°6.1 mm⌄
Wind17 mph NW
Gusts32 mph
UV index6 – High
Precip chance57%
Sunrise06:58
Sunset19:37
Monday 14/9 Sunny
84°59°4%⌄
Wind17 mph SW
Gusts22 mph
UV index7 – High
Precip chance4%
Sunrise06:59
Sunset19:35
Tuesday 15/9 Sunny
84°58°1%⌄
Wind15 mph NW
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise07:01
Sunset19:33
Wednesday 16/9 Rain (climatological)
91°67°4.6 mm⌄
Day≈86–96°
Night≈62–73°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
91°67°20%⌄
Day≈85–96°
Night≈62–73°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
95°70°20%⌄
Day≈90–101°
Night≈65–76°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
91°68°8.0 mm⌄
Day≈86–97°
Night≈62–73°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
88°65°20%⌄
Day≈82–93°
Night≈60–71°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
83°63°20%⌄
Day≈78–88°
Night≈57–68°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
87°65°5.1 mm⌄
Day≈82–93°
Night≈60–71°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
88°65°20%⌄
Day≈82–93°
Night≈60–71°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
94°69°20%⌄
Day≈89–100°
Night≈64–75°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
95°70°3.7 mm⌄
Day≈90–101°
Night≈65–76°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
89°66°20%⌄
Day≈83–94°
Night≈61–71°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
88°66°20%⌄
Day≈83–94°
Night≈60–71°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
82°62°9.2 mm⌄
Day≈76–87°
Night≈56–67°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
82°62°20%⌄
Day≈77–88°
Night≈57–68°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
91°67°20%⌄
Day≈86–96°
Night≈62–73°
Precip≈2.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
76°54°4.8 mm⌄
Day≈71–82°
Night≈48–59°
Precip≈2.7 in / October
(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 Granite Falls, 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.