Weather in Jefferson, CO
Jefferson, Thursday, 15 October, 23:26
Clear. Feels like 22°. High 39°, low 28°.
Monthly outlook for Jefferson, CO: average high 43.2°, average low 22.5°. That is 0.8° below the climate normal for October. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 17 October (55.1°), the coolest 28 October (8.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 46.4° | 46.2° | +0.1° |
| 25 October – 3 November | 37.8° | 40.7° | -1.6° |
| 4 November – 13 November | at normal | 37.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Como (6 mi).
0
Jefferson, Friday, 16 October
Clear. High 45°, low 22°.
0Jefferson, Saturday, 17 October
Clear. High 55°, low 27°.
0.01
Jefferson, Sunday, 18 October
Snow. High 52°, low 26°.
0.09Jefferson, Monday, 19 October
Snow. High 46°, low 28°.
0
Jefferson, Tuesday, 20 October
Mostly clear. High 51°, low 29°.
0
Jefferson, Wednesday, 21 October
Overcast. High 51°, low 29°.
0.06
Jefferson, Thursday, 22 October
Light rain. High 48°, low 37°.
0.26Jefferson, Friday, 23 October
Snow. High 41°, low 22°.
0.57Jefferson, Saturday, 24 October
Snow. High 35°, low 20°.
0.18Jefferson, Sunday, 25 October
Snow. High 31°, low 12°.
0
Jefferson, Monday, 26 October
Partly cloudy. High 36°, low 10°.
0.06Jefferson, Tuesday, 27 October
Light snow. High 27°, low 11°.
0Jefferson, Wednesday, 28 October
Mostly clear. High 42°, low 9°.
0Jefferson, Thursday, 29 October
Overcast. High 44°, low 24°.
0Jefferson, Friday, 30 October
Clear. High 47°, low 26°.
0.04Jefferson, Saturday, 31 October
Climate normal for this date — 60-year average.
0.05Jefferson, Sunday, 1 November
Climate normal for this date — 60-year average.
0.05Jefferson, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Jefferson, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Jefferson, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Jefferson, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Jefferson, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Jefferson, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05
Jefferson, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07Jefferson, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Jefferson, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Jefferson, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.05Jefferson, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Jefferson, Friday, 13 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, CO 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, CO 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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