Weather in Rochester, CA
Rochester, Friday, 30 October, 13:07
Overcast. Feels like 64°. High 66°, low 60°.
Monthly outlook for Rochester, CA: average high 69.7°, average low 58.2°. That is 1.3° below the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 7 November (78.3°), the coolest 2 November (47.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 69.6° | 73.2° | -2° |
| 9 November – 18 November | 69.8° | 69.4° | +0.2° |
| 19 November – 28 November | at normal | 66.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Rancho Cucamonga (3 mi).
0.32
Rochester, Saturday, 31 October
Rain. High 67°, low 55°.
0.54Rochester, Sunday, 1 November
Rain. High 62°, low 51°.
0
Rochester, Monday, 2 November
Partly cloudy. High 67°, low 48°.
0
Rochester, Tuesday, 3 November
Clear. High 71°, low 54°.
0Rochester, Wednesday, 4 November
Clear. High 65°, low 56°.
0.03Rochester, Thursday, 5 November
Light rain. High 68°, low 57°.
0
Rochester, Friday, 6 November
Mostly clear. High 73°, low 61°.
0Rochester, Saturday, 7 November
Clear. High 78°, low 64°.
0Rochester, Sunday, 8 November
Partly cloudy. High 78°, low 65°.
0Rochester, Monday, 9 November
Overcast. High 71°, low 64°.
0Rochester, Tuesday, 10 November
Clear. High 70°, low 61°.
0.37Rochester, Wednesday, 11 November
Rain. High 62°, low 58°.
0Rochester, Thursday, 12 November
Mostly clear. High 68°, low 56°.
0Rochester, Friday, 13 November
Clear. High 74°, low 59°.
0Rochester, Saturday, 14 November
Partly cloudy. High 74°, low 62°.
0.07Rochester, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Rochester, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Rochester, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Rochester, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06Rochester, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Rochester, Friday, 20 November
Climate normal for this date — 60-year average.
0.12Rochester, Saturday, 21 November
Climate normal for this date — 60-year average.
0.07Rochester, Sunday, 22 November
Climate normal for this date — 60-year average.
0.02Rochester, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Rochester, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.07Rochester, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Rochester, Thursday, 26 November
Climate normal for this date — 60-year average.
0.05Rochester, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Rochester, 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 Rochester, 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 Rochester, 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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