Larkspur · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Larkspur & 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
76°
Sat, Aug 22
Coldest night
44°
Wed, Sep 2
Days with precip
5 / 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
76° 54°
75% precip chance
Sat 29 – Sun 30 Aug
64° 46°
59% precip chance
Sat 5 – Sun 6 Sep
62° 41°
typical range
Sat 12 – Sun 13 Sep
62° 40°
typical range
30 days — Larkspur
14 forecast + 16 climatology
Thu · Today Mostly cloudy
69°57°0.2 mm⌄
Wind3 mph N
Gusts4 mph
UV index4 – Moderate
Precip chance25%
Sunrise06:21
Sunset20:51
Fri · Tomorrow Sunny
76°57°6%⌄
Wind9 mph S
Gusts15 mph
UV index6 – Moderate
Precip chance6%
Sunrise06:23
Sunset20:49
Saturday 22/8 Mostly cloudy
76°61°12%⌄
Wind9 mph SE
Gusts22 mph
UV index5 – Moderate
Precip chance12%
Sunrise06:25
Sunset20:47
Sunday 23/8 Sunny
73°54°30.5 mm⌄
Wind14 mph NW
Gusts34 mph
UV index5 – Moderate
Precip chance75%
Sunrise06:27
Sunset20:44
Monday 24/8 Sunny
73°55°6%⌄
Wind13 mph NW
Gusts29 mph
UV index6 – High
Precip chance6%
Sunrise06:28
Sunset20:42
Tuesday 25/8 Sunny
71°57°5%⌄
Wind12 mph SE
Gusts29 mph
UV index6 – High
Precip chance5%
Sunrise06:30
Sunset20:40
Wednesday 26/8 Sunny
75°59°6%⌄
Wind13 mph SE
Gusts34 mph
UV index6 – High
Precip chance6%
Sunrise06:32
Sunset20:37
Thursday 27/8 Mostly cloudy
76°53°9.8 mm⌄
Wind15 mph SW
Gusts35 mph
UV index5 – Moderate
Precip chance77%
Sunrise06:34
Sunset20:35
Friday 28/8 Showers
50°45°7.3 mm⌄
Wind23 mph W
Gusts43 mph
UV index3 – Moderate
Precip chance85%
Sunrise06:35
Sunset20:33
Saturday 29/8 Sunny
50°46°18%⌄
Wind15 mph W
Gusts30 mph
UV index3 – Moderate
Precip chance18%
Sunrise06:37
Sunset20:30
Sunday 30/8 Mostly cloudy
64°49°1.6 mm⌄
Wind8 mph W
Gusts22 mph
UV index5 – Moderate
Precip chance59%
Sunrise06:39
Sunset20:28
Monday 31/8 Showers
61°45°2.8 mm⌄
Wind10 mph N
Gusts19 mph
UV index4 – Moderate
Precip chance75%
Sunrise06:41
Sunset20:26
Tuesday 1/9 Mostly cloudy
55°45°12%⌄
Wind14 mph E
Gusts32 mph
UV index4 – Moderate
Precip chance12%
Sunrise06:42
Sunset20:23
Wednesday 2/9 Mostly cloudy
63°44°0.4 mm⌄
Wind16 mph SE
Gusts34 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:44
Sunset20:21
Thursday 3/9 Rain (climatological)
52°39°14.4 mm⌄
Day≈47–57°
Night≈34–44°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
57°42°20%⌄
Day≈51–62°
Night≈37–47°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
62°45°20%⌄
Day≈56–67°
Night≈40–50°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
56°41°10.6 mm⌄
Day≈51–61°
Night≈36–47°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
54°40°20%⌄
Day≈48–59°
Night≈35–46°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
49°37°20%⌄
Day≈44–55°
Night≈32–43°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
49°37°12.5 mm⌄
Day≈44–55°
Night≈32–43°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
54°40°20%⌄
Day≈49–60°
Night≈35–46°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
61°44°20%⌄
Day≈55–66°
Night≈39–50°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
62°45°11.8 mm⌄
Day≈56–67°
Night≈40–50°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
54°40°20%⌄
Day≈49–60°
Night≈35–46°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
55°41°20%⌄
Day≈50–60°
Night≈35–46°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
50°38°7.6 mm⌄
Day≈45–55°
Night≈32–43°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
53°39°20%⌄
Day≈47–58°
Night≈34–45°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
56°41°20%⌄
Day≈51–61°
Night≈36–47°
Precip≈4.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
56°42°8.4 mm⌄
Day≈51–62°
Night≈36–47°
Precip≈4.5 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 Larkspur, 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.