Weather in Jefferson, CA
Jefferson, Monday, 12 October, 17:44
Partly cloudy. Feels like 65°. High 67°, low 59°.
Monthly outlook for Jefferson, CA: average high 81.7°, average low 64.6°. That is 1.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 16 October (95.9°), the coolest 14 October (51.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 81.5° | 78.9° | +1.5° |
| 22 October – 31 October | 81.9° | 76.9° | +2.8° |
| 1 November – 10 November | at normal | 74.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Florence (3 mi).
0
Jefferson, Tuesday, 13 October
Clear. High 77°, low 54°.
0Jefferson, Wednesday, 14 October
Clear. High 82°, low 51°.
0Jefferson, Thursday, 15 October
Clear. High 92°, low 55°.
0Jefferson, Friday, 16 October
Clear. High 96°, low 68°.
0Jefferson, Saturday, 17 October
Clear. High 92°, low 67°.
0Jefferson, Sunday, 18 October
Clear. High 87°, low 68°.
0Jefferson, Monday, 19 October
Clear. High 82°, low 71°.
0Jefferson, Tuesday, 20 October
Clear. High 70°, low 64°.
0.1
Jefferson, Wednesday, 21 October
Light rain. High 71°, low 62°.
0Jefferson, Thursday, 22 October
Clear. High 74°, low 64°.
0Jefferson, Friday, 23 October
Clear. High 79°, low 66°.
0Jefferson, Saturday, 24 October
Clear. High 83°, low 69°.
0Jefferson, Sunday, 25 October
Clear. High 82°, low 69°.
0Jefferson, Monday, 26 October
Partly cloudy. High 87°, low 72°.
0Jefferson, Tuesday, 27 October
Clear. High 86°, low 74°.
0.02
Jefferson, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.01Jefferson, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Jefferson, Friday, 30 October
Climate normal for this date — 60-year average.
0.02Jefferson, Saturday, 31 October
Climate normal for this date — 60-year average.
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.
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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