Weather in Charter Oak, CA
Charter Oak, Saturday, 8 August, 23:26
Clear. Feels like 78°. High 97°, low 69°.
Monthly outlook for Charter Oak, CA: average high 93.1°, average low 72.8°. That is 2.1° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (100.5°), the coolest 8 August (69.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 93.5° | 89.8° | +2.1° |
| 18 August – 27 August | 92.4° | 89.5° | +1.6° |
| 28 August – 6 September | at normal | 91.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Covina (2 mi).
0
Charter Oak, Sunday, 9 August
Clear. High 100°, low 71°.
0
Charter Oak, Monday, 10 August
Partly cloudy. High 97°, low 71°.
0
Charter Oak, Tuesday, 11 August
Overcast. High 95°, low 77°.
0Charter Oak, Wednesday, 12 August
Clear. High 91°, low 73°.
0Charter Oak, Thursday, 13 August
Overcast. High 86°, low 71°.
0Charter Oak, Friday, 14 August
Overcast. High 85°, low 70°.
0Charter Oak, Saturday, 15 August
Clear. High 92°, low 71°.
0Charter Oak, Sunday, 16 August
Overcast. High 94°, low 73°.
0Charter Oak, Monday, 17 August
Clear. High 97°, low 75°.
0Charter Oak, Tuesday, 18 August
Overcast. High 97°, low 77°.
0Charter Oak, Wednesday, 19 August
Overcast. High 96°, low 77°.
0Charter Oak, Thursday, 20 August
Clear. High 93°, low 75°.
0Charter Oak, Friday, 21 August
Clear. High 89°, low 72°.
0Charter Oak, Saturday, 22 August
Clear. High 89°, low 70°.
0Charter Oak, Sunday, 23 August
Clear. High 91°, low 71°.
0
Charter Oak, Monday, 24 August
Climate normal for this date — 60-year average.
0Charter Oak, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Charter Oak, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Charter Oak, Thursday, 27 August
Climate normal for this date — 60-year average.
0Charter Oak, Friday, 28 August
Climate normal for this date — 60-year average.
0Charter Oak, Saturday, 29 August
Climate normal for this date — 60-year average.
0Charter Oak, Sunday, 30 August
Climate normal for this date — 60-year average.
0Charter Oak, Monday, 31 August
Climate normal for this date — 60-year average.
0.03Charter Oak, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Charter Oak, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01Charter Oak, Thursday, 3 September
Climate normal for this date — 60-year average.
0Charter Oak, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Charter Oak, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Charter Oak, 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 Charter Oak, 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 Charter Oak, 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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