Weather in Portola, CA
Portola, Friday, 30 October, 14:40
Overcast. Feels like 48°. High 52°, low 39°.
Monthly outlook for Portola, CA: average high 50.8°, average low 32.6°. That is 0° below the climate normal for October. Precipitation is expected on 7 days (about 4.4 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 8 November (63.9°), the coolest 12 November (22.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 54.1° | 52.7° | +0.8° |
| 9 November – 18 November | 45.4° | 47.1° | -0.9° |
| 19 November – 28 November | at normal | 42.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Beckwourth (4 mi).
0.07
Portola, Saturday, 31 October
Light rain. High 50°, low 37°.
0Portola, Sunday, 1 November
Light rain. High 51°, low 33°.
0Portola, Monday, 2 November
Overcast. High 56°, low 27°.
0.06Portola, Tuesday, 3 November
Light rain. High 51°, low 34°.
0
Portola, Wednesday, 4 November
Mostly clear. High 53°, low 32°.
0Portola, Thursday, 5 November
Overcast. High 60°, low 37°.
0.07Portola, Friday, 6 November
Light rain. High 49°, low 32°.
0
Portola, Saturday, 7 November
Clear. High 56°, low 30°.
0Portola, Sunday, 8 November
Mostly clear. High 64°, low 33°.
0Portola, Monday, 9 November
Overcast. High 61°, low 43°.
0.72
Portola, Tuesday, 10 November
Snow. High 52°, low 37°.
2.61Portola, Wednesday, 11 November
Snow. High 39°, low 27°.
0Portola, Thursday, 12 November
Overcast. High 40°, low 22°.
0.06Portola, Friday, 13 November
Light rain. High 44°, low 28°.
0.76Portola, Saturday, 14 November
Snow. High 36°, low 32°.
0.08
Portola, Sunday, 15 November
Climate normal for this date — 60-year average.
0.13
Portola, Monday, 16 November
Climate normal for this date — 60-year average.
0.18Portola, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.13Portola, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Portola, Thursday, 19 November
Climate normal for this date — 60-year average.
0.16Portola, Friday, 20 November
Climate normal for this date — 60-year average.
0.18Portola, Saturday, 21 November
Climate normal for this date — 60-year average.
0.15Portola, Sunday, 22 November
Climate normal for this date — 60-year average.
0.17Portola, Monday, 23 November
Climate normal for this date — 60-year average.
0.15Portola, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12Portola, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.11Portola, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Portola, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Portola, Saturday, 28 November
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 Portola, 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 Portola, 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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