Weather in Portola, CA
Portola, Saturday, 31 October, 15:41
Overcast. Feels like 45°. High 47°, low 38°.
Monthly outlook for Portola, CA: average high 52.9°, average low 32.9°. That is 1.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 7 November (68.8°), the coolest 13 November (14°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 57.9° | 52.2° | +3.2° |
| 10 November – 19 November | 44.6° | 46.7° | -1.1° |
| 20 November – 29 November | at normal | 41.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Beckwourth (4 mi).
0
Portola, Sunday, 1 November
Partly cloudy. High 51°, low 37°.
0
Portola, Monday, 2 November
Clear. High 57°, low 31°.
0.1
Portola, Tuesday, 3 November
Rain. High 55°, low 35°.
0
Portola, Wednesday, 4 November
Mostly clear. High 54°, low 33°.
0Portola, Thursday, 5 November
Partly cloudy. High 58°, low 35°.
0Portola, Friday, 6 November
Overcast. High 63°, low 36°.
0Portola, Saturday, 7 November
Partly cloudy. High 69°, low 38°.
0Portola, Sunday, 8 November
Overcast. High 64°, low 40°.
0Portola, Monday, 9 November
Overcast. High 61°, low 42°.
0.02Portola, Tuesday, 10 November
Light rain. High 56°, low 39°.
1.39
Portola, Wednesday, 11 November
Snow. High 41°, low 33°.
0.26Portola, Thursday, 12 November
Snow. High 36°, low 17°.
0Portola, Friday, 13 November
Overcast. High 41°, low 14°.
0Portola, Saturday, 14 November
Overcast. High 46°, low 26°.
0Portola, Sunday, 15 November
Overcast. High 48°, low 32°.
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.
0.17Portola, Sunday, 29 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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