Weather in National City, CA
National City, Sunday, 9 August, 07:00
Mostly clear. Feels like 72°. High 87°, low 71°.
Monthly outlook for National City, CA: average high 83°, average low 74.3°. That is 2.9° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 24 August (87.7°), the coolest 10 August (69.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 81.5° | 77.8° | +2.1° |
| 19 August – 28 August | 85.6° | 78.4° | +4° |
| 29 August – 7 September | at normal | 79.3° | — |
August records over 66 years
0
National City, Monday, 10 August
Clear. High 86°, low 69°.
0National City, Tuesday, 11 August
Clear. High 82°, low 74°.
0National City, Wednesday, 12 August
Clear. High 80°, low 73°.
0
National City, Thursday, 13 August
Overcast. High 76°, low 72°.
0National City, Friday, 14 August
Overcast. High 76°, low 71°.
0National City, Saturday, 15 August
Overcast. High 80°, low 72°.
0National City, Sunday, 16 August
Overcast. High 81°, low 74°.
0National City, Monday, 17 August
Mostly clear. High 82°, low 75°.
0.01
National City, Tuesday, 18 August
Light rain. High 84°, low 75°.
0National City, Wednesday, 19 August
Clear. High 84°, low 76°.
0.06National City, Thursday, 20 August
Light rain. High 87°, low 75°.
0
National City, Friday, 21 August
Partly cloudy. High 86°, low 79°.
0National City, Saturday, 22 August
Overcast. High 84°, low 78°.
0National City, Sunday, 23 August
Clear. High 85°, low 77°.
0National City, Monday, 24 August
Clear. High 88°, low 78°.
0.01National City, Tuesday, 25 August
Climate normal for this date — 60-year average.
0National City, Wednesday, 26 August
Climate normal for this date — 60-year average.
0National City, Thursday, 27 August
Climate normal for this date — 60-year average.
0.01National City, Friday, 28 August
Climate normal for this date — 60-year average.
0National City, Saturday, 29 August
Climate normal for this date — 60-year average.
0National City, Sunday, 30 August
Climate normal for this date — 60-year average.
0National City, Monday, 31 August
Climate normal for this date — 60-year average.
0.01National City, Tuesday, 1 September
Climate normal for this date — 60-year average.
0National City, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01National City, Thursday, 3 September
Climate normal for this date — 60-year average.
0National City, Friday, 4 September
Climate normal for this date — 60-year average.
0National City, Saturday, 5 September
Climate normal for this date — 60-year average.
0National City, Sunday, 6 September
Climate normal for this date — 60-year average.
0.01National City, 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 National City, 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 National City, 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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