Weather in Rochester, CA
Rochester, Friday, 16 October, 16:15
Clear. Feels like 86°. High 90°, low 71°.
Monthly outlook for Rochester, CA: average high 72.6°, average low 60.3°. That is 2.1° below the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 16 October (90°), the coolest 21 October (53.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 75.1° | 77.7° | -1.4° |
| 26 October – 4 November | 68.5° | 74.3° | -3.3° |
| 5 November – 14 November | at normal | 70.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Rancho Cucamonga (3 mi).
0
Rochester, Saturday, 17 October
Overcast. High 87°, low 69°.
0Rochester, Sunday, 18 October
Clear. High 79°, low 60°.
0Rochester, Monday, 19 October
Clear. High 77°, low 61°.
0Rochester, Tuesday, 20 October
Clear. High 70°, low 58°.
0.43
Rochester, Wednesday, 21 October
Rain. High 62°, low 54°.
0.04Rochester, Thursday, 22 October
Light rain. High 65°, low 54°.
0.01Rochester, Friday, 23 October
Light rain. High 68°, low 58°.
0Rochester, Saturday, 24 October
Clear. High 75°, low 59°.
0Rochester, Sunday, 25 October
Overcast. High 78°, low 64°.
0Rochester, Monday, 26 October
Overcast. High 75°, low 60°.
0Rochester, Tuesday, 27 October
Overcast. High 67°, low 58°.
0Rochester, Wednesday, 28 October
Overcast. High 69°, low 58°.
0Rochester, Thursday, 29 October
Overcast. High 69°, low 63°.
0.03Rochester, Friday, 30 October
Light rain. High 65°, low 61°.
0.02Rochester, Saturday, 31 October
Light rain. High 66°, low 57°.
0.04
Rochester, Sunday, 1 November
Climate normal for this date — 60-year average.
0.04Rochester, Monday, 2 November
Climate normal for this date — 60-year average.
0.02Rochester, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Rochester, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Rochester, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Rochester, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Rochester, Saturday, 7 November
Climate normal for this date — 60-year average.
0.1
Rochester, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Rochester, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Rochester, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Rochester, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Rochester, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Rochester, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Rochester, Saturday, 14 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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