Weather in Thornton, CO
Thornton, Sunday, 18 October, 08:49
Clear. Feels like 55°. High 76°, low 46°.
Monthly outlook for Thornton, CO: average high 66.1°, average low 46°. That is 4° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 18 October (75.6°), the coolest 31 October (34.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 69.3° | 61.4° | +4.4° |
| 28 October – 6 November | 60.7° | 54.4° | +3.5° |
| 7 November – 16 November | at normal | 52° | — |
October records over 66 years
0Thornton, Monday, 19 October
Clear. High 70°, low 43°.
0
Thornton, Tuesday, 20 October
Mostly clear. High 71°, low 42°.
0Thornton, Wednesday, 21 October
Mostly clear. High 74°, low 44°.
0
Thornton, Thursday, 22 October
Overcast. High 76°, low 51°.
0Thornton, Friday, 23 October
Clear. High 73°, low 57°.
0.13
Thornton, Saturday, 24 October
Light rain. High 55°, low 49°.
0Thornton, Sunday, 25 October
Overcast. High 62°, low 45°.
0Thornton, Monday, 26 October
Overcast. High 64°, low 51°.
0Thornton, Tuesday, 27 October
Overcast. High 71°, low 54°.
0
Thornton, Wednesday, 28 October
Partly cloudy. High 68°, low 53°.
0Thornton, Thursday, 29 October
Overcast. High 65°, low 50°.
0Thornton, Friday, 30 October
Overcast. High 50°, low 34°.
0Thornton, Saturday, 31 October
Clear. High 54°, low 34°.
0Thornton, Sunday, 1 November
Clear. High 62°, low 36°.
0Thornton, Monday, 2 November
Overcast. High 65°, low 48°.
0.05Thornton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Thornton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Thornton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Thornton, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Thornton, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Thornton, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Thornton, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Thornton, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Thornton, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Thornton, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Thornton, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Thornton, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04Thornton, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Thornton, Monday, 16 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 Thornton, 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 Thornton, 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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