Weather in Jefferson, CA
Jefferson, Friday, 16 October, 18:49
Clear. Feels like 85°. High 93°, low 75°.
Monthly outlook for Jefferson, CA: average high 77.5°, average low 65.6°. That is 0° below the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 16 October (93.4°), the coolest 22 October (57.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 79.3° | 78.4° | +0.5° |
| 26 October – 4 November | 74.4° | 76.1° | -0.9° |
| 5 November – 14 November | at normal | 72.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Florence (3 mi).
0
Jefferson, Saturday, 17 October
Mostly clear. High 93°, low 78°.
0
Jefferson, Sunday, 18 October
Clear. High 88°, low 70°.
0Jefferson, Monday, 19 October
Clear. High 85°, low 65°.
0
Jefferson, Tuesday, 20 October
Partly cloudy. High 78°, low 62°.
0.42
Jefferson, Wednesday, 21 October
Rain. High 67°, low 59°.
0.12Jefferson, Thursday, 22 October
Light rain. High 71°, low 57°.
0Jefferson, Friday, 23 October
Clear. High 73°, low 65°.
0.03Jefferson, Saturday, 24 October
Light rain. High 70°, low 63°.
0Jefferson, Sunday, 25 October
Partly cloudy. High 73°, low 64°.
0
Jefferson, Monday, 26 October
Overcast. High 79°, low 68°.
0.01Jefferson, Tuesday, 27 October
Light rain. High 83°, low 67°.
0.06Jefferson, Wednesday, 28 October
Light rain. High 70°, low 64°.
0.01Jefferson, Thursday, 29 October
Light rain. High 68°, low 63°.
0Jefferson, Friday, 30 October
Overcast. High 72°, low 63°.
0Jefferson, Saturday, 31 October
Overcast. High 74°, low 66°.
0.04Jefferson, Sunday, 1 November
Climate normal for this date — 60-year average.
0.01Jefferson, Monday, 2 November
Climate normal for this date — 60-year average.
0Jefferson, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Jefferson, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Jefferson, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Jefferson, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Jefferson, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Jefferson, Sunday, 8 November
Climate normal for this date — 60-year average.
0.03Jefferson, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Jefferson, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Jefferson, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03Jefferson, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Jefferson, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Jefferson, 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 Jefferson, 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 Jefferson, 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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