Grand Forks · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Grand Forks & 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
96°
Sat, Sep 5
Coldest night
61°
Tue, Sep 1
Days with precip
3 / 14
of 14 forecast days
Nicest day
Tue, Sep 8
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
96° 67°
80% precip chance
Sat 12 – Sun 13 Sep
91° 62°
3% precip chance
Sat 19 – Sun 20 Sep
73° 53°
typical range
Sat 26 – Sun 27 Sep
73° 51°
typical range
30 days — Grand Forks
14 forecast + 16 climatology
Mon · Today Sunny
84°63°15.8 mm⌄
Wind23 mph SW
Gusts37 mph
UV index6 – Moderate
Precip chance64%
Sunrise06:45
Sunset20:11
Tue · Tomorrow Mostly cloudy
80°61°7%⌄
Wind13 mph W
Gusts30 mph
UV index6 – Moderate
Precip chance7%
Sunrise06:46
Sunset20:09
Wednesday 2/9 Sunny
83°64°4%⌄
Wind10 mph E
Gusts23 mph
UV index6 – High
Precip chance4%
Sunrise06:47
Sunset20:07
Thursday 3/9 Showers
92°65°6.9 mm⌄
Wind18 mph S
Gusts31 mph
UV index6 – Moderate
Precip chance71%
Sunrise06:49
Sunset20:05
Friday 4/9 Sunny
93°67°0.2 mm⌄
Wind15 mph E
Gusts32 mph
UV index6 – High
Precip chance17%
Sunrise06:50
Sunset20:03
Saturday 5/9 Sunny
96°67°4%⌄
Wind15 mph SE
Gusts34 mph
UV index9 – Very high
Precip chance4%
Sunrise06:51
Sunset20:01
Sunday 6/9 Thunderstorms
91°72°17.8 mm⌄
Wind23 mph N
Gusts36 mph
UV index7 – High
Precip chance80%
Sunrise06:53
Sunset19:59
Monday 7/9 Mostly cloudy
86°70°0.2 mm⌄
Wind12 mph NW
Gusts30 mph
UV index8 – Very high
Precip chance21%
Sunrise06:54
Sunset19:57
Tuesday 8/9 Mostly cloudy
75°62°8%⌄
Wind9 mph NE
Gusts21 mph
UV index6 – High
Precip chance8%
Sunrise06:55
Sunset19:55
Wednesday 9/9 Sunny
87°61°0.4 mm⌄
Wind17 mph SE
Gusts32 mph
UV index8 – Very high
Precip chance36%
Sunrise06:57
Sunset19:53
Thursday 10/9 Mostly cloudy
92°64°8%⌄
Wind25 mph W
Gusts38 mph
UV index8 – Very high
Precip chance8%
Sunrise06:58
Sunset19:51
Friday 11/9 Sunny
77°62°1%⌄
Wind21 mph W
Gusts33 mph
UV index7 – High
Precip chance1%
Sunrise07:00
Sunset19:49
Saturday 12/9 Sunny
87°62°1%⌄
Wind13 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance1%
Sunrise07:01
Sunset19:47
Sunday 13/9 Sunny
91°65°3%⌄
Wind15 mph E
Gusts37 mph
UV index8 – Very high
Precip chance3%
Sunrise07:02
Sunset19:45
Monday 14/9 Rain (climatological)
79°57°9.2 mm⌄
Day≈74–85°
Night≈52–62°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
78°56°20%⌄
Day≈72–83°
Night≈51–62°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
82°59°20%⌄
Day≈77–88°
Night≈54–64°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
77°56°5.6 mm⌄
Day≈72–83°
Night≈51–61°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
72°53°20%⌄
Day≈67–78°
Night≈47–58°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
73°53°20%⌄
Day≈68–78°
Night≈48–59°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
72°53°4.5 mm⌄
Day≈67–77°
Night≈47–58°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
76°55°20%⌄
Day≈71–82°
Night≈50–61°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
80°57°20%⌄
Day≈74–85°
Night≈52–63°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
82°59°9.8 mm⌄
Day≈76–87°
Night≈53–64°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
81°58°20%⌄
Day≈76–87°
Night≈53–64°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
74°54°20%⌄
Day≈68–79°
Night≈48–59°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
70°51°9.2 mm⌄
Day≈64–75°
Night≈46–57°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
73°54°20%⌄
Day≈68–79°
Night≈48–59°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
78°56°20%⌄
Day≈73–83°
Night≈51–62°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
81°58°11.3 mm⌄
Day≈75–86°
Night≈53–63°
Precip≈3.5 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 Grand Forks, 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.