Weather in Castle Rock, CO
Castle Rock, Wednesday, 28 October, 03:43
Overcast. Feels like 45°. High 67°, low 42°.
Monthly outlook for Castle Rock, CO: average high 60.1°, average low 38.1°. That is 3.6° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 30 October (69.9°), the coolest 2 November (30.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 59.4° | 54.2° | +2.9° |
| 7 November – 16 November | 61.3° | 51.8° | +5.2° |
| 17 November – 26 November | at normal | 47° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Stonegate (11 mi).
0Castle Rock, Thursday, 29 October
Overcast. High 66°, low 38°.
0
Castle Rock, Friday, 30 October
Partly cloudy. High 70°, low 38°.
0
Castle Rock, Saturday, 31 October
Mostly clear. High 69°, low 38°.
0Castle Rock, Sunday, 1 November
Overcast. High 69°, low 42°.
0.19
Castle Rock, Monday, 2 November
Light rain. High 53°, low 30°.
0.66
Castle Rock, Tuesday, 3 November
Snow. High 41°, low 33°.
0Castle Rock, Wednesday, 4 November
Partly cloudy. High 48°, low 36°.
0.04Castle Rock, Thursday, 5 November
Light rain. High 52°, low 33°.
0.01Castle Rock, Friday, 6 November
Light rain. High 58°, low 36°.
0Castle Rock, Saturday, 7 November
Overcast. High 61°, low 38°.
0Castle Rock, Sunday, 8 November
Mostly clear. High 61°, low 44°.
0Castle Rock, Monday, 9 November
Overcast. High 63°, low 41°.
0Castle Rock, Tuesday, 10 November
Partly cloudy. High 62°, low 42°.
0Castle Rock, Wednesday, 11 November
Overcast. High 62°, low 40°.
0
Castle Rock, Thursday, 12 November
Clear. High 59°, low 39°.
0.02Castle Rock, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Castle Rock, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.02Castle Rock, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Thursday, 19 November
Climate normal for this date — 60-year average.
0.06Castle Rock, Friday, 20 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Saturday, 21 November
Climate normal for this date — 60-year average.
0.03Castle Rock, Sunday, 22 November
Climate normal for this date — 60-year average.
0.04Castle Rock, Monday, 23 November
Climate normal for this date — 60-year average.
0.03Castle Rock, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.02Castle Rock, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.06Castle Rock, Thursday, 26 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 Castle Rock, 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 Castle Rock, 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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