Weather in Muir Beach, CA
Muir Beach, Sunday, 9 August, 01:24
Mostly clear. Feels like 55°. High 70°, low 56°.
Monthly outlook for Muir Beach, CA: average high 64.8°, average low 58.3°. That is 4.1° 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 (72.3°), the coolest 10 August (55.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 65.7° | 72.4° | -3.7° |
| 19 August – 28 August | 63.2° | 72.4° | -5.1° |
| 29 August – 7 September | at normal | 74.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Marin City (4 mi).
0
Muir Beach, Monday, 10 August
Partly cloudy. High 72°, low 56°.
0
Muir Beach, Tuesday, 11 August
Clear. High 64°, low 57°.
0Muir Beach, Wednesday, 12 August
Partly cloudy. High 63°, low 58°.
0
Muir Beach, Thursday, 13 August
Light rain. High 63°, low 59°.
0Muir Beach, Friday, 14 August
Clear. High 64°, low 60°.
0
Muir Beach, Saturday, 15 August
Mostly clear. High 65°, low 59°.
0
Muir Beach, Sunday, 16 August
Overcast. High 65°, low 60°.
0Muir Beach, Monday, 17 August
Overcast. High 64°, low 59°.
0Muir Beach, Tuesday, 18 August
Overcast. High 66°, low 59°.
0Muir Beach, Wednesday, 19 August
Overcast. High 65°, low 60°.
0Muir Beach, Thursday, 20 August
Overcast. High 65°, low 59°.
0Muir Beach, Friday, 21 August
Partly cloudy. High 62°, low 58°.
0Muir Beach, Saturday, 22 August
Overcast. High 63°, low 58°.
0Muir Beach, Sunday, 23 August
Overcast. High 63°, low 57°.
0Muir Beach, Monday, 24 August
Partly cloudy. High 63°, low 58°.
0Muir Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Muir Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Muir Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
0Muir Beach, Friday, 28 August
Climate normal for this date — 60-year average.
0Muir Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
0Muir Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
0Muir Beach, Monday, 31 August
Climate normal for this date — 60-year average.
0Muir Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
0Muir Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Muir Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
0Muir Beach, Friday, 4 September
Climate normal for this date — 60-year average.
0Muir Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
0Muir Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
0Muir Beach, 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 Muir Beach, 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 Muir Beach, 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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