Monthly outlook for Chimacum, WA: average high 56.7°, average low 45.7°. That is 1.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 9 days and 3.5 inches. The warmest day looks like 21 October (61.8°), the coolest 28 October (42.6°).
56.7°/45.7°
Average high / low
+1.7°
Above normal
1 / 9
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
56°
54.4°
+0.9°
30 October – 8 November
57.9°
51.9°
+3.3°
9 November – 18 November
at normal
49.4°
—
October records over 66 years
81.9°16 October 2022All-time high
30.6°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Marrowstone (5 mi).
Wed, 2162° / 44°0
62 °
Chimacum, Wednesday, 21 October
Clear. High 62°, low 44°.
Pressure29.94 inHg
Wind2.3 mph N
Humidity68%
Visibility6.2 mi
Dew point45°
Thu, 2253° / 46°0.02
53 °
Chimacum, Thursday, 22 October
Light rain. High 53°, low 46°.
Pressure29.97 inHg
Wind7.5 mph NW
Humidity83%
Visibility6.2 mi
Dew point48°
Fri, 2353° / 44°0
53 °
Chimacum, Friday, 23 October
Overcast. High 53°, low 44°.
Pressure30.33 inHg
Wind7.4 mph NW
Humidity76%
Visibility3.9 mi
Dew point45°
Sat, 2449° / 45°0.11
49 °
Chimacum, Saturday, 24 October
Light rain. High 49°, low 45°.
Pressure30.18 inHg
Wind9.2 mph W
Humidity92%
Visibility—
Dew point46°
Sun, 2554° / 46°0
54 °
Chimacum, Sunday, 25 October
Overcast. High 54°, low 46°.
Pressure30.24 inHg
Wind9.4 mph W
Humidity84%
Visibility—
Dew point46°
Mon, 2656° / 43°0
56 °
Chimacum, Monday, 26 October
Overcast. High 56°, low 43°.
Pressure30.21 inHg
Wind6.9 mph NW
Humidity45%
Visibility—
Dew point31°
Tue, 2757° / 45°0
57 °
Chimacum, Tuesday, 27 October
Overcast. High 57°, low 45°.
Pressure30.21 inHg
Wind5.9 mph N
Humidity50%
Visibility—
Dew point35°
Wed, 2860° / 43°0
60 °
Chimacum, Wednesday, 28 October
Partly cloudy. High 60°, low 43°.
Pressure30.09 inHg
Wind4.4 mph N
Humidity44%
Visibility—
Dew point32°
Thu, 2957° / 43°0
57 °
Chimacum, Thursday, 29 October
Overcast. High 57°, low 43°.
Pressure29.94 inHg
Wind4 mph N
Humidity45%
Visibility—
Dew point31°
Fri, 3057° / 43°0
57 °
Chimacum, Friday, 30 October
Overcast. High 57°, low 43°.
Pressure29.80 inHg
Wind3.3 mph NW
Humidity52%
Visibility—
Dew point34°
Sat, 3157° / 46°0.01
57 °
Chimacum, Saturday, 31 October
Light rain. High 57°, low 46°.
Pressure29.80 inHg
Wind5.1 mph NW
Humidity69%
Visibility—
Dew point43°
Sun, 0161° / 48°0.03
61 °
Chimacum, Sunday, 1 November
Light rain. High 61°, low 48°.
Pressure29.94 inHg
Wind13 mph SE
Humidity78%
Visibility—
Dew point48°
Mon, 0258° / 49°0.01
58 °
Chimacum, Monday, 2 November
Light rain. High 58°, low 49°.
Pressure30.18 inHg
Wind6.8 mph SE
Humidity82%
Visibility—
Dew point47°
Tue, 0358° / 48°0
58 °
Chimacum, Tuesday, 3 November
Overcast. High 58°, low 48°.
Pressure29.91 inHg
Wind6.5 mph NW
Humidity74%
Visibility—
Dew point46°
Wed, 0457° / 52°0.03
57 °
Chimacum, Wednesday, 4 November
Light rain. High 57°, low 52°.
Pressure29.62 inHg
Wind8.1 mph SE
Humidity95%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0552° / 44°0.21
52 °
Chimacum, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.21 in
Chance of precipitation70%
Record high61° (1980)
Record low31° (1971)
Fri, 0651° / 44°0.24
51 °
Chimacum, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.24 in
Chance of precipitation65%
Record high60° (2014)
Record low32° (2003)
Sat, 0751° / 44°0.23
51 °
Chimacum, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.23 in
Chance of precipitation67%
Record high58° (1976)
Record low33° (2003)
Sun, 0851° / 44°0.22
51 °
Chimacum, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.22 in
Chance of precipitation63%
Record high64° (2016)
Record low35° (2022)
Mon, 0950° / 44°0.22
50 °
Chimacum, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.22 in
Chance of precipitation62%
Record high64° (2025)
Record low35° (1986)
Tue, 1050° / 43°0.17
50 °
Chimacum, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.17 in
Chance of precipitation50%
Record high61° (2016)
Record low31° (1986)
Wed, 1150° / 44°0.24
50 °
Chimacum, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.24 in
Chance of precipitation58%
Record high59° (1990)
Record low30° (1985)
Thu, 1250° / 43°0.26
50 °
Chimacum, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.26 in
Chance of precipitation68%
Record high58° (2016)
Record low30° (1985)
Fri, 1350° / 43°0.3
50 °
Chimacum, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.3 in
Chance of precipitation65%
Record high60° (1967)
Record low32° (1985)
Sat, 1450° / 42°0.26
50 °
Chimacum, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.26 in
Chance of precipitation57%
Record high61° (1969)
Record low31° (1964)
Sun, 1549° / 42°0.28
49 °
Chimacum, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.28 in
Chance of precipitation67%
Record high57° (2001)
Record low33° (2014)
Mon, 1648° / 42°0.25
48 °
Chimacum, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low42°
Average precipitation0.25 in
Chance of precipitation73%
Record high58° (1965)
Record low34° (1961)
Tue, 1749° / 41°0.26
49 °
Chimacum, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.26 in
Chance of precipitation75%
Record high57° (1995)
Record low30° (1977)
Wed, 1848° / 41°0.21
48 °
Chimacum, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.21 in
Chance of precipitation63%
Record high55° (1965)
Record low29° (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 Chimacum, 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 Chimacum, 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.