Weather in New Castle, CO
New Castle, Wednesday, 21 October, 07:52
Mostly clear. Feels like 47°. High 63°, low 47°.
Monthly outlook for New Castle, CO: average high 57.7°, average low 42.1°. That is 1.2° above the climate normal for October. Precipitation is expected on 7 days (about 0.9 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (66.7°), the coolest 1 November (34.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 59.8° | 57.7° | +1.2° |
| 31 October – 9 November | 54.2° | 51.8° | +1.3° |
| 10 November – 19 November | at normal | 47° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Silt (7 mi).
0.04
New Castle, Thursday, 22 October
Light rain. High 67°, low 49°.
0New Castle, Friday, 23 October
Light rain. High 62°, low 45°.
0.12New Castle, Saturday, 24 October
Light rain. High 59°, low 43°.
0.31New Castle, Sunday, 25 October
Light rain. High 56°, low 41°.
0
New Castle, Monday, 26 October
Overcast. High 58°, low 40°.
0New Castle, Tuesday, 27 October
Overcast. High 60°, low 40°.
0New Castle, Wednesday, 28 October
Overcast. High 60°, low 44°.
0
New Castle, Thursday, 29 October
Partly cloudy. High 63°, low 46°.
0.26New Castle, Friday, 30 October
Light rain. High 52°, low 48°.
0.05New Castle, Saturday, 31 October
Light rain. High 57°, low 42°.
0
New Castle, Sunday, 1 November
Clear. High 48°, low 34°.
0New Castle, Monday, 2 November
Overcast. High 51°, low 37°.
0New Castle, Tuesday, 3 November
Partly cloudy. High 56°, low 40°.
0New Castle, Wednesday, 4 November
Overcast. High 55°, low 40°.
0.07New Castle, Thursday, 5 November
Light rain. High 58°, low 40°.
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.
0.13
New 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.
0.05New Castle, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06New Castle, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04New Castle, Monday, 16 November
Climate normal for this date — 60-year average.
0.06New Castle, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06New Castle, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09New Castle, Thursday, 19 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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