Lake Arrowhead · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Lake Arrowhead & 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
86°
Fri, Aug 28
Coldest night
56°
Sat, Sep 5
Days with precip
2 / 14
of 14 forecast days
Nicest day
Wed, Sep 9
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
83° 58°
2% precip chance
Sat 5 – Sun 6 Sep
80° 56°
57% precip chance
Sat 12 – Sun 13 Sep
77° 58°
typical range
Sat 19 – Sun 20 Sep
78° 58°
typical range
30 days — Lake Arrowhead
14 forecast + 16 climatology
Fri · Today Mostly cloudy
86°67°5%⌄
Wind15 mph SW
Gusts19 mph
UV index10 – Very high
Precip chance5%
Sunrise06:19
Sunset19:20
Sat · Tomorrow Sunny
83°62°2%⌄
Wind14 mph SW
Gusts21 mph
UV index11 – Very high
Precip chance2%
Sunrise06:20
Sunset19:19
Sunday 30/8 Sunny
80°58°1%⌄
Wind13 mph SW
Gusts16 mph
UV index10 – Very high
Precip chance1%
Sunrise06:20
Sunset19:17
Monday 31/8 Sunny
78°57°0%⌄
Wind14 mph SW
Gusts20 mph
UV index10 – Very high
Precip chance0%
Sunrise06:21
Sunset19:16
Tuesday 1/9 Sunny
77°58°0.2 mm⌄
Wind14 mph SW
Gusts23 mph
UV index11 – Very high
Precip chance17%
Sunrise06:22
Sunset19:15
Wednesday 2/9 Showers
74°59°1.3 mm⌄
Wind13 mph SW
Gusts17 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:22
Sunset19:13
Thursday 3/9 Showers
74°59°0.5 mm⌄
Wind11 mph SW
Gusts16 mph
UV index5 – Moderate
Precip chance36%
Sunrise06:23
Sunset19:12
Friday 4/9 Showers
66°58°0.4 mm⌄
Wind8 mph SW
Gusts9 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:24
Sunset19:11
Saturday 5/9 Sunny
77°56°1.6 mm⌄
Wind10 mph SW
Gusts20 mph
UV index6 – High
Precip chance57%
Sunrise06:25
Sunset19:09
Sunday 6/9 Sunny
80°60°1.0 mm⌄
Wind10 mph SW
Gusts12 mph
UV index7 – High
Precip chance36%
Sunrise06:25
Sunset19:08
Monday 7/9 Sunny
80°61°4%⌄
Wind11 mph SW
Gusts22 mph
UV index7 – High
Precip chance4%
Sunrise06:26
Sunset19:07
Tuesday 8/9 Sunny
85°63°1%⌄
Wind8 mph W
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise06:27
Sunset19:05
Wednesday 9/9 Sunny
77°58°2%⌄
Wind7 mph W
Gusts17 mph
UV index6 – High
Precip chance2%
Sunrise06:27
Sunset19:04
Thursday 10/9 Sunny
80°63°3%⌄
Wind7 mph E
Gusts17 mph
UV index7 – High
Precip chance3%
Sunrise06:28
Sunset19:02
Friday 11/9 Light rain (climatological)
74°56°1.8 mm⌄
Day≈69–80°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
77°58°20%⌄
Day≈72–83°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
76°58°20%⌄
Day≈71–82°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
76°57°1.9 mm⌄
Day≈70–81°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
72°55°20%⌄
Day≈66–77°
Night≈49–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
70°54°20%⌄
Day≈65–76°
Night≈49–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
71°54°1.7 mm⌄
Day≈65–76°
Night≈49–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
74°56°20%⌄
Day≈69–80°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
78°59°20%⌄
Day≈73–84°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
76°58°1.7 mm⌄
Day≈71–82°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
73°56°20%⌄
Day≈68–78°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
71°55°20%⌄
Day≈66–77°
Night≈49–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
69°53°1.6 mm⌄
Day≈63–74°
Night≈48–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
69°53°20%⌄
Day≈64–74°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
73°55°20%⌄
Day≈67–78°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
76°58°1.4 mm⌄
Day≈71–82°
Night≈52–63°
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 Lake Arrowhead, 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.