Weather in Portola, CA
Portola, Tuesday, 10 November, 08:52
Clear. Feels like 47°. High 65°, low 35°.
Monthly outlook for Portola, CA: average high 43.9°, average low 27.5°. That is 0.7° below the climate normal for November. Precipitation is expected on 8 days (about 4.4 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 11 November (66.6°), the coolest 21 November (13.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 48° | 46.7° | +0.7° |
| 20 November – 29 November | 37.1° | 41.8° | -2.6° |
| 30 November – 9 December | at normal | 39.5° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Beckwourth (4 mi).
0Portola, Wednesday, 11 November
Clear. High 67°, low 38°.
0Portola, Thursday, 12 November
Clear. High 63°, low 39°.
1.04
Portola, Friday, 13 November
Snow. High 47°, low 34°.
0.01Portola, Saturday, 14 November
Light snow. High 44°, low 31°.
0.05
Portola, Sunday, 15 November
Light rain. High 45°, low 26°.
0.34Portola, Monday, 16 November
Snow. High 42°, low 34°.
0.13Portola, Tuesday, 17 November
Light snow. High 38°, low 32°.
0.86Portola, Wednesday, 18 November
Snow. High 34°, low 30°.
0.06Portola, Thursday, 19 November
Light snow. High 34°, low 16°.
0
Portola, Friday, 20 November
Overcast. High 35°, low 16°.
0
Portola, Saturday, 21 November
Mostly clear. High 37°, low 13°.
0
Portola, Sunday, 22 November
Partly cloudy. High 36°, low 15°.
0.03Portola, Monday, 23 November
Light snow. High 39°, low 15°.
0.55Portola, Tuesday, 24 November
Snow. High 37°, low 33°.
1.3Portola, Wednesday, 25 November
Snow. High 39°, low 34°.
0.11Portola, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13
Portola, 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.
0.17Portola, Monday, 30 November
Climate normal for this date — 60-year average.
0.22Portola, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.23Portola, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.21Portola, Thursday, 3 December
Climate normal for this date — 60-year average.
0.15Portola, Friday, 4 December
Climate normal for this date — 60-year average.
0.13Portola, Saturday, 5 December
Climate normal for this date — 60-year average.
0.15Portola, Sunday, 6 December
Climate normal for this date — 60-year average.
0.21Portola, Monday, 7 December
Climate normal for this date — 60-year average.
0.11Portola, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.12Portola, Wednesday, 9 December
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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