Weather in Petaluma, CA
Petaluma, Friday, 13 November, 11:10
Heavy rain. Feels like 54°. High 61°, low 50°.
Monthly outlook for Petaluma, CA: average high 58.3°, average low 44.9°. That is 1.8° below the climate normal for November. Precipitation is expected on 5 days (about 2.8 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 14 November (65°), the coolest 20 November (38.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 56.4° | 62.3° | -3.3° |
| 23 November – 2 December | 61.6° | 60° | +0.9° |
| 3 December – 12 December | at normal | 58° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Sonoma State University (7 mi).
0.01Petaluma, Saturday, 14 November
Light rain. High 65°, low 46°.
0.64Petaluma, Sunday, 15 November
Heavy rain. High 58°, low 48°.
0
Petaluma, Monday, 16 November
Clear. High 58°, low 43°.
0.01Petaluma, Tuesday, 17 November
Light rain. High 58°, low 39°.
0.76Petaluma, Wednesday, 18 November
Heavy rain. High 56°, low 44°.
0
Petaluma, Thursday, 19 November
Overcast. High 54°, low 41°.
0Petaluma, Friday, 20 November
Clear. High 55°, low 38°.
0.01Petaluma, Saturday, 21 November
Light rain. High 50°, low 40°.
0.29Petaluma, Sunday, 22 November
Rain. High 49°, low 44°.
0.18Petaluma, Monday, 23 November
Rain. High 57°, low 46°.
0
Petaluma, Tuesday, 24 November
Mostly clear. High 64°, low 46°.
0Petaluma, Wednesday, 25 November
Overcast. High 61°, low 47°.
0
Petaluma, Thursday, 26 November
Partly cloudy. High 63°, low 46°.
0.04Petaluma, Friday, 27 November
Light rain. High 61°, low 49°.
0Petaluma, Saturday, 28 November
Overcast. High 64°, low 51°.
0.17Petaluma, Sunday, 29 November
Climate normal for this date — 60-year average.
0.18Petaluma, Monday, 30 November
Climate normal for this date — 60-year average.
0.17Petaluma, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.23Petaluma, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.24
Petaluma, Thursday, 3 December
Climate normal for this date — 60-year average.
0.11Petaluma, Friday, 4 December
Climate normal for this date — 60-year average.
0.12Petaluma, Saturday, 5 December
Climate normal for this date — 60-year average.
0.13Petaluma, Sunday, 6 December
Climate normal for this date — 60-year average.
0.11Petaluma, Monday, 7 December
Climate normal for this date — 60-year average.
0.11Petaluma, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.14Petaluma, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.15Petaluma, Thursday, 10 December
Climate normal for this date — 60-year average.
0.18Petaluma, Friday, 11 December
Climate normal for this date — 60-year average.
0.21Petaluma, Saturday, 12 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 Petaluma, 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 Petaluma, 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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