Graton · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Graton & 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
98°
Sun, Aug 30
Coldest night
53°
Mon, Aug 17
Days with precip
0 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
91° 58°
3% precip chance
Sat 29 – Sun 30 Aug
98° 54°
1% precip chance
Sat 5 – Sun 6 Sep
77° 47°
typical range
Sat 12 – Sun 13 Sep
81° 49°
typical range
30 days — Graton
14 forecast + 16 climatology
Mon · Today Sunny
83°53°15%⌄
Wind13 mph SW
Gusts21 mph
UV index9 – Very high
Precip chance15%
Sunrise06:27
Sunset20:03
Tue · Tomorrow Mostly cloudy
91°55°9%⌄
Wind10 mph SW
Gusts21 mph
UV index9 – Very high
Precip chance9%
Sunrise06:28
Sunset20:02
Wednesday 19/8 Sunny
91°57°4%⌄
Wind9 mph SW
Gusts19 mph
UV index9 – Very high
Precip chance4%
Sunrise06:29
Sunset20:00
Thursday 20/8 Sunny
93°59°4%⌄
Wind10 mph SW
Gusts21 mph
UV index8 – Very high
Precip chance4%
Sunrise06:30
Sunset19:59
Friday 21/8 Mostly cloudy
89°59°10%⌄
Wind9 mph S
Gusts16 mph
UV index7 – High
Precip chance10%
Sunrise06:31
Sunset19:57
Saturday 22/8 Sunny
91°59°1%⌄
Wind10 mph SW
Gusts21 mph
UV index8 – Very high
Precip chance1%
Sunrise06:32
Sunset19:56
Sunday 23/8 Sunny
88°58°3%⌄
Wind10 mph SW
Gusts17 mph
UV index8 – Very high
Precip chance3%
Sunrise06:33
Sunset19:55
Monday 24/8 Sunny
85°55°3%⌄
Wind8 mph SW
Gusts15 mph
UV index7 – High
Precip chance3%
Sunrise06:33
Sunset19:53
Tuesday 25/8 Sunny
83°55°4%⌄
Wind8 mph SW
Gusts15 mph
UV index7 – High
Precip chance4%
Sunrise06:34
Sunset19:52
Wednesday 26/8 Mostly cloudy
90°54°5%⌄
Wind9 mph SW
Gusts15 mph
UV index8 – Very high
Precip chance5%
Sunrise06:35
Sunset19:50
Thursday 27/8 Mostly cloudy
87°57°10%⌄
Wind9 mph S
Gusts16 mph
UV index7 – High
Precip chance10%
Sunrise06:36
Sunset19:49
Friday 28/8 Sunny
85°53°3%⌄
Wind10 mph SW
Gusts19 mph
UV index7 – High
Precip chance3%
Sunrise06:37
Sunset19:47
Saturday 29/8 Sunny
90°54°1%⌄
Wind9 mph SW
Gusts17 mph
UV index8 – Very high
Precip chance1%
Sunrise06:38
Sunset19:46
Sunday 30/8 Sunny
98°61°0%⌄
Wind9 mph SW
Gusts18 mph
UV index9 – Very high
Precip chance0%
Sunrise06:39
Sunset19:44
Monday 31/8 Light rain (climatological)
86°55°0.8 mm⌄
Day≈81–92°
Night≈50–60°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
86°53°20%⌄
Day≈81–91°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Partly cloudy (climatological)
84°52°20%⌄
Day≈79–90°
Night≈47–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Light rain (climatological)
84°52°1.0 mm⌄
Day≈78–89°
Night≈46–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
82°50°20%⌄
Day≈76–87°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
77°47°20%⌄
Day≈71–82°
Night≈42–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Light rain (climatological)
77°47°0.8 mm⌄
Day≈71–82°
Night≈42–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
80°50°20%⌄
Day≈75–86°
Night≈44–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
87°53°20%⌄
Day≈81–92°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Light rain (climatological)
84°52°1.4 mm⌄
Day≈78–89°
Night≈46–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
82°51°20%⌄
Day≈76–87°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
78°48°20%⌄
Day≈72–83°
Night≈43–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Light rain (climatological)
79°49°2.0 mm⌄
Day≈74–85°
Night≈44–54°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
81°50°20%⌄
Day≈75–86°
Night≈44–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
80°49°20%⌄
Day≈75–86°
Night≈44–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Light rain (climatological)
85°52°2.0 mm⌄
Day≈80–90°
Night≈47–58°
Precip≈0.6 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 Graton, 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.