Weather in Port San Luis, CA
Port San Luis, Sunday, 9 August, 09:40
Clear. Feels like 79°. High 81°, low 64°.
Monthly outlook for Port San Luis, CA: average high 69.5°, average low 61.7°. That is 1.7° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.0 inches. The warmest day looks like 10 August (81.5°), the coolest 14 August (59.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 69.2° | 72.4° | -1.8° |
| 19 August – 28 August | 70° | 73.1° | -1.7° |
| 29 August – 7 September | at normal | 74.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Grover Beach (9 mi).
0
Port San Luis, Monday, 10 August
Partly cloudy. High 82°, low 63°.
0
Port San Luis, Tuesday, 11 August
Mostly clear. High 68°, low 62°.
0
Port San Luis, Wednesday, 12 August
Overcast. High 65°, low 60°.
0
Port San Luis, Thursday, 13 August
Light rain. High 65°, low 60°.
0Port San Luis, Friday, 14 August
Clear. High 65°, low 59°.
0Port San Luis, Saturday, 15 August
Mostly clear. High 65°, low 60°.
0Port San Luis, Sunday, 16 August
Overcast. High 67°, low 62°.
0Port San Luis, Monday, 17 August
Partly cloudy. High 66°, low 61°.
0Port San Luis, Tuesday, 18 August
Partly cloudy. High 69°, low 62°.
0Port San Luis, Wednesday, 19 August
Overcast. High 73°, low 63°.
0Port San Luis, Thursday, 20 August
Overcast. High 69°, low 63°.
0Port San Luis, Friday, 21 August
Partly cloudy. High 69°, low 62°.
0Port San Luis, Saturday, 22 August
Overcast. High 69°, low 62°.
0Port San Luis, Sunday, 23 August
Overcast. High 70°, low 62°.
0Port San Luis, Monday, 24 August
Partly cloudy. High 69°, low 62°.
0Port San Luis, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Port San Luis, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Port San Luis, Thursday, 27 August
Climate normal for this date — 60-year average.
0Port San Luis, Friday, 28 August
Climate normal for this date — 60-year average.
0Port San Luis, Saturday, 29 August
Climate normal for this date — 60-year average.
0Port San Luis, Sunday, 30 August
Climate normal for this date — 60-year average.
0Port San Luis, Monday, 31 August
Climate normal for this date — 60-year average.
0Port San Luis, Tuesday, 1 September
Climate normal for this date — 60-year average.
0Port San Luis, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Port San Luis, Thursday, 3 September
Climate normal for this date — 60-year average.
0.02Port San Luis, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Port San Luis, Saturday, 5 September
Climate normal for this date — 60-year average.
0Port San Luis, Sunday, 6 September
Climate normal for this date — 60-year average.
0Port San Luis, 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 Port San Luis, 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 Port San Luis, 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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