Weather in Rancho San Diego, CA
Rancho San Diego, Sunday, 9 August, 10:02
Clear. Feels like 85°. High 86°, low 70°.
Monthly outlook for Rancho San Diego, CA: average high 90°, average low 73.4°. That is 4.2° 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 24 August (99.9°), the coolest 10 August (67.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 86.6° | 82.5° | +2.3° |
| 19 August – 28 August | 95.6° | 83° | +7° |
| 29 August – 7 September | at normal | 84.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — El Cajon (4 mi).
0
Rancho San Diego, Monday, 10 August
Partly cloudy. High 86°, low 67°.
0Rancho San Diego, Tuesday, 11 August
Clear. High 89°, low 73°.
0Rancho San Diego, Wednesday, 12 August
Clear. High 87°, low 71°.
0
Rancho San Diego, Thursday, 13 August
Overcast. High 82°, low 69°.
0Rancho San Diego, Friday, 14 August
Overcast. High 82°, low 68°.
0Rancho San Diego, Saturday, 15 August
Overcast. High 84°, low 70°.
0Rancho San Diego, Sunday, 16 August
Overcast. High 87°, low 73°.
0Rancho San Diego, Monday, 17 August
Clear. High 90°, low 72°.
0.01
Rancho San Diego, Tuesday, 18 August
Light rain. High 93°, low 74°.
0Rancho San Diego, Wednesday, 19 August
Clear. High 95°, low 78°.
0.03Rancho San Diego, Thursday, 20 August
Light rain. High 96°, low 78°.
0
Rancho San Diego, Friday, 21 August
Mostly clear. High 94°, low 79°.
0Rancho San Diego, Saturday, 22 August
Overcast. High 93°, low 77°.
0Rancho San Diego, Sunday, 23 August
Clear. High 95°, low 76°.
0Rancho San Diego, Monday, 24 August
Clear. High 100°, low 79°.
0.01Rancho San Diego, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Thursday, 27 August
Climate normal for this date — 60-year average.
0.01Rancho San Diego, Friday, 28 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Saturday, 29 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Sunday, 30 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Monday, 31 August
Climate normal for this date — 60-year average.
0Rancho San Diego, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.01Rancho San Diego, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Rancho San Diego, Thursday, 3 September
Climate normal for this date — 60-year average.
0Rancho San Diego, Friday, 4 September
Climate normal for this date — 60-year average.
0Rancho San Diego, Saturday, 5 September
Climate normal for this date — 60-year average.
0Rancho San Diego, Sunday, 6 September
Climate normal for this date — 60-year average.
0.01Rancho San Diego, Monday, 7 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 Rancho San Diego, 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 Rancho San Diego, 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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