Weather in Lake Arrowhead, CA
Lake Arrowhead, Saturday, 8 August, 16:32
Clear. Feels like 84°. High 87°, low 55°.
Monthly outlook for Lake Arrowhead, CA: average high 84.8°, average low 61.4°. That is 3.6° below the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 19 August (88.3°), the coolest 8 August (54.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 83.7° | 91.9° | -4.5° |
| 18 August – 27 August | 86.6° | 91° | -2.4° |
| 28 August – 6 September | at normal | 92.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — San Bernardino (10 mi).
0Lake Arrowhead, Sunday, 9 August
Clear. High 87°, low 64°.
0
Lake Arrowhead, Monday, 10 August
Overcast. High 87°, low 64°.
0Lake Arrowhead, Tuesday, 11 August
Overcast. High 84°, low 61°.
0
Lake Arrowhead, Wednesday, 12 August
Partly cloudy. High 80°, low 59°.
0Lake Arrowhead, Thursday, 13 August
Partly cloudy. High 77°, low 56°.
0Lake Arrowhead, Friday, 14 August
Overcast. High 78°, low 56°.
0Lake Arrowhead, Saturday, 15 August
Clear. High 84°, low 57°.
0Lake Arrowhead, Sunday, 16 August
Partly cloudy. High 86°, low 61°.
0Lake Arrowhead, Monday, 17 August
Partly cloudy. High 86°, low 61°.
0Lake Arrowhead, Tuesday, 18 August
Clear. High 88°, low 64°.
0Lake Arrowhead, Wednesday, 19 August
Clear. High 88°, low 65°.
0Lake Arrowhead, Thursday, 20 August
Partly cloudy. High 88°, low 64°.
0Lake Arrowhead, Friday, 21 August
Overcast. High 86°, low 65°.
0.04
Lake Arrowhead, Saturday, 22 August
Light rain. High 85°, low 65°.
0.01Lake Arrowhead, Sunday, 23 August
Light rain. High 84°, low 64°.
0.01
Lake Arrowhead, Monday, 24 August
Climate normal for this date — 60-year average.
0.02Lake Arrowhead, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.02Lake Arrowhead, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Thursday, 27 August
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Friday, 28 August
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Saturday, 29 August
Climate normal for this date — 60-year average.
0.02Lake Arrowhead, Sunday, 30 August
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Monday, 31 August
Climate normal for this date — 60-year average.
0.02Lake Arrowhead, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Lake Arrowhead, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.02Lake Arrowhead, Thursday, 3 September
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Lake Arrowhead, Sunday, 6 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Lake Arrowhead, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Lake Arrowhead, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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