Weather in New Castle, CO
New Castle, Thursday, 15 October, 05:10
Overcast. Feels like 32°. High 58°, low 38°.
Monthly outlook for New Castle, CO: average high 56.2°, average low 38.1°. That is 1.9° below the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 21 October (68.8°), the coolest 25 October (24.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 57.6° | 61.8° | -2.3° |
| 25 October – 3 November | 53.9° | 54.4° | -0.3° |
| 4 November – 13 November | at normal | 50.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Silt (7 mi).
0
New Castle, Friday, 16 October
Clear. High 63°, low 33°.
0New Castle, Saturday, 17 October
Clear. High 64°, low 40°.
0.01
New Castle, Sunday, 18 October
Light rain. High 64°, low 43°.
0.01New Castle, Monday, 19 October
Light rain. High 60°, low 45°.
0New Castle, Tuesday, 20 October
Light rain. High 63°, low 45°.
0.01New Castle, Wednesday, 21 October
Light rain. High 69°, low 48°.
0.12New Castle, Thursday, 22 October
Light rain. High 53°, low 44°.
0.67
New Castle, Friday, 23 October
Snow. High 43°, low 36°.
0.15New Castle, Saturday, 24 October
Snow. High 39°, low 27°.
0New Castle, Sunday, 25 October
Clear. High 45°, low 24°.
0.03New Castle, Monday, 26 October
Snow. High 48°, low 33°.
0New Castle, Tuesday, 27 October
Clear. High 53°, low 32°.
0New Castle, Wednesday, 28 October
Overcast. High 55°, low 37°.
0New Castle, Thursday, 29 October
Overcast. High 61°, low 42°.
0
New Castle, Friday, 30 October
Mostly clear. High 61°, low 43°.
0.07
New Castle, Saturday, 31 October
Climate normal for this date — 60-year average.
0.07
New Castle, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07New Castle, Monday, 2 November
Climate normal for this date — 60-year average.
0.09New Castle, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04New Castle, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.06New Castle, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03New Castle, Friday, 6 November
Climate normal for this date — 60-year average.
0.03New Castle, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08New Castle, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13New Castle, Monday, 9 November
Climate normal for this date — 60-year average.
0.06New Castle, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07New Castle, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08New Castle, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06New Castle, 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 New Castle, 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 New Castle, 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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