Weather in Castle Rock, WA
Castle Rock, Friday, 23 October, 00:20
Partly cloudy. Feels like 45°. High 60°, low 40°.
Monthly outlook for Castle Rock, WA: average high 57°, average low 40.9°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 9 days and 4.4 inches. The warmest day looks like 6 November (65.5°), the coolest 2 November (35.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 54.4° | 54.6° | -0.1° |
| 2 November – 11 November | 61.3° | 51.9° | +5.3° |
| 12 November – 21 November | at normal | 48.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Sightly (10 mi).
0
Castle Rock, Saturday, 24 October
Overcast. High 58°, low 38°.
0.69
Castle Rock, Sunday, 25 October
Rain. High 55°, low 46°.
0.05Castle Rock, Monday, 26 October
Light rain. High 55°, low 45°.
0Castle Rock, Tuesday, 27 October
Overcast. High 56°, low 43°.
0.22Castle Rock, Wednesday, 28 October
Light rain. High 50°, low 41°.
0.02Castle Rock, Thursday, 29 October
Light rain. High 53°, low 40°.
0.01Castle Rock, Friday, 30 October
Light rain. High 48°, low 37°.
0Castle Rock, Saturday, 31 October
Overcast. High 52°, low 44°.
0
Castle Rock, Sunday, 1 November
Partly cloudy. High 57°, low 38°.
0Castle Rock, Monday, 2 November
Partly cloudy. High 57°, low 35°.
0Castle Rock, Tuesday, 3 November
Partly cloudy. High 61°, low 38°.
0Castle Rock, Wednesday, 4 November
Overcast. High 65°, low 41°.
0Castle Rock, Thursday, 5 November
Partly cloudy. High 65°, low 41°.
0Castle Rock, Friday, 6 November
Overcast. High 66°, low 44°.
0Castle Rock, Saturday, 7 November
Overcast. High 55°, low 43°.
0.24Castle Rock, Sunday, 8 November
Climate normal for this date — 60-year average.
0.25Castle Rock, Monday, 9 November
Climate normal for this date — 60-year average.
0.22Castle Rock, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.3Castle Rock, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.34Castle Rock, Thursday, 12 November
Climate normal for this date — 60-year average.
0.37Castle Rock, Friday, 13 November
Climate normal for this date — 60-year average.
0.29Castle Rock, Saturday, 14 November
Climate normal for this date — 60-year average.
0.3Castle Rock, Sunday, 15 November
Climate normal for this date — 60-year average.
0.28Castle Rock, Monday, 16 November
Climate normal for this date — 60-year average.
0.35Castle Rock, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.24Castle Rock, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.41Castle Rock, Thursday, 19 November
Climate normal for this date — 60-year average.
0.35Castle Rock, Friday, 20 November
Climate normal for this date — 60-year average.
0.31Castle Rock, Saturday, 21 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, WA 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, WA 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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