Weather in Rochester, CA
Rochester, Thursday, 29 October, 17:37
Overcast. Feels like 70°. High 72°, low 59°.
Monthly outlook for Rochester, CA: average high 67.3°, average low 56.8°. That is 2.7° below the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 8 November (74°), the coolest 2 November (50.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 67.7° | 73.4° | -3.2° |
| 8 November – 17 November | 66.7° | 69.7° | -1.7° |
| 18 November – 27 November | at normal | 66.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Rancho Cucamonga (3 mi).
0.06
Rochester, Friday, 30 October
Light rain. High 70°, low 58°.
0.24Rochester, Saturday, 31 October
Rain. High 61°, low 51°.
0.35Rochester, Sunday, 1 November
Rain. High 59°, low 50°.
0
Rochester, Monday, 2 November
Clear. High 64°, low 50°.
0Rochester, Tuesday, 3 November
Clear. High 69°, low 54°.
0Rochester, Wednesday, 4 November
Clear. High 69°, low 56°.
0
Rochester, Thursday, 5 November
Partly cloudy. High 70°, low 60°.
0.02Rochester, Friday, 6 November
Light rain. High 70°, low 61°.
0Rochester, Saturday, 7 November
Clear. High 74°, low 60°.
0Rochester, Sunday, 8 November
Clear. High 74°, low 63°.
0Rochester, Monday, 9 November
Overcast. High 71°, low 63°.
0.67Rochester, Tuesday, 10 November
Rain. High 61°, low 58°.
0Rochester, Wednesday, 11 November
Overcast. High 67°, low 58°.
0.14Rochester, Thursday, 12 November
Light rain. High 61°, low 55°.
0Rochester, Friday, 13 November
Clear. High 66°, low 52°.
0.05
Rochester, Saturday, 14 November
Climate normal for this date — 60-year average.
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.
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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