Weather in Jefferson, CO
Jefferson, Saturday, 17 October, 02:02
Clear. Feels like 29°. High 57°, low 25°.
Monthly outlook for Jefferson, CO: average high 46.8°, average low 27.4°. That is 1.8° above the climate normal for October. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 17 October (57.1°), the coolest 26 October (19.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 48.5° | 45.5° | +1.6° |
| 27 October – 5 November | 43.9° | 39.7° | +2.3° |
| 6 November – 15 November | at normal | 36.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Como (6 mi).
0
Jefferson, Sunday, 18 October
Mostly clear. High 57°, low 30°.
0.11
Jefferson, Monday, 19 October
Rain. High 48°, low 29°.
0Jefferson, Tuesday, 20 October
Mostly clear. High 52°, low 31°.
0.07Jefferson, Wednesday, 21 October
Light rain. High 49°, low 28°.
0.02Jefferson, Thursday, 22 October
Light rain. High 53°, low 32°.
0.18
Jefferson, Friday, 23 October
Snow. High 46°, low 31°.
0.17Jefferson, Saturday, 24 October
Snow. High 41°, low 30°.
0.19Jefferson, Sunday, 25 October
Light snow. High 38°, low 22°.
0
Jefferson, Monday, 26 October
Clear. High 45°, low 20°.
0
Jefferson, Tuesday, 27 October
Overcast. High 50°, low 27°.
0.42Jefferson, Wednesday, 28 October
Snow. High 39°, low 32°.
0.14Jefferson, Thursday, 29 October
Snow. High 39°, low 26°.
0Jefferson, Friday, 30 October
Light snow. High 39°, low 24°.
0Jefferson, Saturday, 31 October
Mostly clear. High 47°, low 23°.
0Jefferson, Sunday, 1 November
Overcast. High 50°, low 29°.
0.05
Jefferson, 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.
0.05Jefferson, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04Jefferson, Sunday, 15 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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