Weather in Jefferson, CO
Jefferson, Tuesday, 13 October, 11:22
Partly cloudy. Feels like 48°. High 49°, low 37°.
Monthly outlook for Jefferson, CO: average high 43.4°, average low 24.1°. That is 1.3° below the climate normal for October. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 19 October (51.5°), the coolest 16 October (7.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 45° | 46.9° | -1.1° |
| 23 October – 1 November | 40.8° | 41.9° | -0.6° |
| 2 November – 11 November | at normal | 38° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Como (6 mi).
0.81
Jefferson, Wednesday, 14 October
Snow. High 43°, low 34°.
0.13Jefferson, Thursday, 15 October
Snow. High 36°, low 8°.
0
Jefferson, Friday, 16 October
Clear. High 41°, low 8°.
0
Jefferson, Saturday, 17 October
Mostly clear. High 50°, low 17°.
0.01Jefferson, Sunday, 18 October
Light snow. High 43°, low 29°.
0Jefferson, Monday, 19 October
Clear. High 51°, low 26°.
0Jefferson, Tuesday, 20 October
Clear. High 50°, low 31°.
0.04Jefferson, Wednesday, 21 October
Snow. High 50°, low 31°.
0.09Jefferson, Thursday, 22 October
Light snow. High 36°, low 25°.
0Jefferson, Friday, 23 October
Clear. High 38°, low 21°.
0.17Jefferson, Saturday, 24 October
Snow. High 38°, low 21°.
0Jefferson, Sunday, 25 October
Clear. High 46°, low 20°.
0Jefferson, Monday, 26 October
Light snow. High 41°, low 24°.
0.05Jefferson, Tuesday, 27 October
Light snow. High 42°, low 27°.
0.02Jefferson, Wednesday, 28 October
Light snow. High 40°, low 26°.
0.07
Jefferson, Thursday, 29 October
Climate normal for this date — 60-year average.
0.06Jefferson, Friday, 30 October
Climate normal for this date — 60-year average.
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.
0.05Jefferson, 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.
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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