Grafton · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Grafton & 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
80°
Sun, Sep 6
Coldest night
54°
Mon, Aug 24
Days with precip
7 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
77° 60°
89% precip chance
Sat 5 – Sun 6 Sep
80° 69°
87% precip chance
Sat 12 – Sun 13 Sep
66° 52°
typical range
Sat 19 – Sun 20 Sep
64° 53°
typical range
30 days — Grafton
14 forecast + 16 climatology
Mon · Today Sunny
79°54°0.4 mm⌄
Wind13 mph W
Gusts23 mph
UV index7 – High
Precip chance36%
Sunrise06:46
Sunset20:14
Tue · Tomorrow Sunny
71°56°0.1 mm⌄
Wind9 mph NW
Gusts19 mph
UV index8 – High
Precip chance22%
Sunrise06:47
Sunset20:12
Wednesday 26/8 Mostly cloudy
75°59°16%⌄
Wind9 mph S
Gusts15 mph
UV index6 – High
Precip chance16%
Sunrise06:48
Sunset20:11
Thursday 27/8 Showers
78°63°12.5 mm⌄
Wind11 mph SW
Gusts21 mph
UV index7 – High
Precip chance83%
Sunrise06:49
Sunset20:09
Friday 28/8 Sunny
79°62°0.7 mm⌄
Wind11 mph N
Gusts20 mph
UV index7 – High
Precip chance38%
Sunrise06:50
Sunset20:08
Saturday 29/8 Mostly cloudy
77°63°14%⌄
Wind7 mph SW
Gusts13 mph
UV index7 – High
Precip chance14%
Sunrise06:51
Sunset20:06
Sunday 30/8 Showers
66°60°6.0 mm⌄
Wind12 mph S
Gusts26 mph
UV index4 – Moderate
Precip chance89%
Sunrise06:52
Sunset20:04
Monday 31/8 Showers
74°64°7.6 mm⌄
Wind7 mph S
Gusts16 mph
UV index5 – Moderate
Precip chance89%
Sunrise06:53
Sunset20:03
Tuesday 1/9 Fog
76°66°1.7 mm⌄
Wind7 mph SE
Gusts17 mph
UV index6 – High
Precip chance68%
Sunrise06:54
Sunset20:01
Wednesday 2/9 Mostly cloudy
70°64°12.7 mm⌄
Wind11 mph NE
Gusts23 mph
UV index5 – Moderate
Precip chance93%
Sunrise06:55
Sunset20:00
Thursday 3/9 Fog
74°66°24%⌄
Wind10 mph NW
Gusts15 mph
UV index6 – High
Precip chance24%
Sunrise06:56
Sunset19:58
Friday 4/9 Sunny
76°65°22%⌄
Wind9 mph N
Gusts17 mph
UV index5 – Moderate
Precip chance22%
Sunrise06:57
Sunset19:56
Saturday 5/9 Showers
78°69°8.0 mm⌄
Wind12 mph S
Gusts22 mph
UV index6 – High
Precip chance86%
Sunrise06:58
Sunset19:55
Sunday 6/9 Showers
80°71°5.8 mm⌄
Wind13 mph W
Gusts21 mph
UV index6 – High
Precip chance87%
Sunrise06:59
Sunset19:53
Monday 7/9 Rain (climatological)
66°55°11.2 mm⌄
Day≈61–72°
Night≈50–61°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
69°57°20%⌄
Day≈63–74°
Night≈51–62°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
73°60°20%⌄
Day≈68–78°
Night≈54–65°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
70°58°14.4 mm⌄
Day≈65–76°
Night≈52–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
63°53°20%⌄
Day≈58–68°
Night≈48–59°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
61°52°20%⌄
Day≈55–66°
Night≈47–57°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
66°55°13.6 mm⌄
Day≈60–71°
Night≈50–61°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
68°56°20%⌄
Day≈62–73°
Night≈51–62°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
69°57°20%⌄
Day≈64–74°
Night≈52–62°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
69°57°9.6 mm⌄
Day≈64–75°
Night≈52–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
70°58°20%⌄
Day≈65–76°
Night≈53–63°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
63°53°20%⌄
Day≈57–68°
Night≈48–59°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
64°54°14.8 mm⌄
Day≈59–70°
Night≈49–60°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
62°53°20%⌄
Day≈56–67°
Night≈47–58°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
65°55°20%⌄
Day≈60–71°
Night≈49–60°
Precip≈4.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
72°59°10.4 mm⌄
Day≈67–77°
Night≈53–64°
Precip≈4.7 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 Grafton, 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.