As of 07:42 PDT

Weather in Castle Rock, WA

39°

Castle Rock, Friday, 23 October, 07:42

Overcast. Feels like 37°. High 59°, low 39°.

Pressure30.24 inHg

Wind3.4 mph NW

Humidity89%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

Monthly outlook for Castle Rock, WA: average high 58.2°, average low 43.5°. That is 2.5° above the climate normal for October. Precipitation is expected on 6 days (about 9.1 inches), against a normal of 9 days and 4.4 inches. The warmest day looks like 30 October (63.8°), the coolest 2 November (37.9°).

58.2°/43.5°

Average high / low

+2.5°

Above normal

6 / 9

Wet days / normal

9.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
23 October – 1 November	59.4°	54.6°	+2.7°
2 November – 11 November	56.3°	51.9°	+2.5°
12 November – 21 November	at normal	48.8°	—

October records over 66 years

90.3°1 October 1987All-time high

23.7°30 October 2019All-time low

Climate normals and records are computed from the nearest reference point — Sightly (10 mi).

Sat, 2459° / 41°

59 °

Castle Rock, Saturday, 24 October

Overcast. High 59°, low 41°.

Pressure30.18 inHg

Wind1.7 mph S

Humidity61%

Visibility1.6 mi

Dew point39°

Sun, 2555° / 43°

0.78

55 °

Castle Rock, Sunday, 25 October

Heavy rain. High 55°, low 43°.

Pressure29.97 inHg

Wind10.2 mph S

Humidity63%

Visibility4.0 mi

Dew point42°

Mon, 2658° / 47°

0.03

58 °

Castle Rock, Monday, 26 October

Light rain. High 58°, low 47°.

Pressure30.00 inHg

Wind8 mph S

Humidity75%

Visibility6.2 mi

Dew point48°

Tue, 2757° / 44°

57 °

Castle Rock, Tuesday, 27 October

Light rain. High 57°, low 44°.

Pressure30.12 inHg

Wind5.4 mph S

Humidity84%

Visibility—

Dew point47°

Wed, 2855° / 44°

55 °

Castle Rock, Wednesday, 28 October

Overcast. High 55°, low 44°.

Pressure30.09 inHg

Wind9.4 mph N

Humidity87%

Visibility—

Dew point46°

Thu, 2962° / 39°

62 °

Castle Rock, Thursday, 29 October

Clear. High 62°, low 39°.

Pressure30.12 inHg

Wind4.5 mph N

Humidity58%

Visibility—

Dew point37°

Fri, 3064° / 39°

64 °

Castle Rock, Friday, 30 October

Clear. High 64°, low 39°.

Pressure29.97 inHg

Wind3.8 mph SW

Humidity44%

Visibility—

Dew point32°

Sat, 3162° / 39°

62 °

Castle Rock, Saturday, 31 October

Clear. High 62°, low 39°.

Pressure29.91 inHg

Wind4.7 mph N

Humidity43%

Visibility—

Dew point30°

Sun, 0162° / 38°

62 °

Castle Rock, Sunday, 1 November

Clear. High 62°, low 38°.

Pressure29.77 inHg

Wind5.2 mph N

Humidity49%

Visibility—

Dew point33°

Mon, 0262° / 38°

62 °

Castle Rock, Monday, 2 November

Clear. High 62°, low 38°.

Pressure29.85 inHg

Wind3.8 mph W

Humidity47%

Visibility—

Dew point32°

Tue, 0349° / 43°

0.41

49 °

Castle Rock, Tuesday, 3 November

Light rain. High 49°, low 43°.

Pressure29.97 inHg

Wind4.3 mph S

Humidity97%

Visibility—

Dew point45°

Wed, 0449° / 43°

1.38

49 °

Castle Rock, Wednesday, 4 November

Heavy rain. High 49°, low 43°.

Pressure29.88 inHg

Wind14.1 mph S

Humidity93%

Visibility—

Dew point44°

Thu, 0559° / 50°

4.11

59 °

Castle Rock, Thursday, 5 November

Heavy rain. High 59°, low 50°.

Pressure29.44 inHg

Wind19.8 mph SW

Humidity93%

Visibility—

Dew point48°

Fri, 0661° / 55°

0.63

61 °

Castle Rock, Friday, 6 November

Rain. High 61°, low 55°.

Pressure29.74 inHg

Wind20.6 mph SW

Humidity91%

Visibility—

Dew point56°

Sat, 0758° / 54°

1.77

58 °

Castle Rock, Saturday, 7 November

Rain. High 58°, low 54°.

Pressure29.56 inHg

Wind11.4 mph S

Humidity89%

Visibility—

Dew point55°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 0851° / 39°

0.24

51 °

Castle Rock, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.24 in

Chance of precipitation55%

Record high66° (2016)

Record low24° (2020)

Mon, 0950° / 40°

0.25

50 °

Castle Rock, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°

Average low40°

Average precipitation0.25 in

Chance of precipitation65%

Record high64° (1996)

Record low25° (2020)

Tue, 1051° / 39°

0.22

51 °

Castle Rock, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.22 in

Chance of precipitation55%

Record high67° (2016)

Record low27° (1985)

Wed, 1151° / 39°

0.3

51 °

Castle Rock, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.3 in

Chance of precipitation58%

Record high63° (2016)

Record low23° (1985)

Thu, 1251° / 40°

0.34

51 °

Castle Rock, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high51°

Average low40°

Average precipitation0.34 in

Chance of precipitation63%

Record high63° (1967)

Record low20° (1985)

Fri, 1351° / 40°

0.37

51 °

Castle Rock, Friday, 13 November

Climate normal for this date — 60-year average.

Average high51°

Average low40°

Average precipitation0.37 in

Chance of precipitation65%

Record high64° (1967)

Record low22° (1985)

Sat, 1450° / 39°

0.29

50 °

Castle Rock, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high50°

Average low39°

Average precipitation0.29 in

Chance of precipitation52%

Record high67° (1999)

Record low15° (1964)

Sun, 1550° / 39°

0.3

50 °

Castle Rock, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high50°

Average low39°

Average precipitation0.3 in

Chance of precipitation63%

Record high60° (2008)

Record low20° (1964)

Mon, 1648° / 39°

0.28

48 °

Castle Rock, Monday, 16 November

Climate normal for this date — 60-year average.

Average high48°

Average low39°

Average precipitation0.28 in

Chance of precipitation73%

Record high62° (1965)

Record low18° (1964)

Tue, 1749° / 38°

0.35

49 °

Castle Rock, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high49°

Average low38°

Average precipitation0.35 in

Chance of precipitation72%

Record high62° (1995)

Record low25° (1964)

Wed, 1847° / 37°

0.24

47 °

Castle Rock, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.24 in

Chance of precipitation57%

Record high58° (2023)

Record low20° (1994)

Thu, 1947° / 38°

0.41

47 °

Castle Rock, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high47°

Average low38°

Average precipitation0.41 in

Chance of precipitation68%

Record high60° (1987)

Record low23° (1975)

Fri, 2048° / 37°

0.35

48 °

Castle Rock, Friday, 20 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.35 in

Chance of precipitation57%

Record high64° (2002)

Record low18° (1985)

Sat, 2146° / 35°

0.31

46 °

Castle Rock, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.31 in

Chance of precipitation60%

Record high59° (2002)

Record low7° (1985)

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.