Monthly outlook for Copalis Beach, WA: average high 53.9°, average low 48°. That is 0° below the climate normal for October. Precipitation is expected on 10 days (about 7.5 inches), against a normal of 9 days and 6.8 inches. The warmest day looks like 17 October (58.5°), the coolest 20 October (42.4°).
53.9°/48°
Average high / low
−0°
Below normal
10 / 9
Wet days / normal
7.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
54.8°
54.7°
+0°
27 October – 5 November
52.4°
52.4°
+0°
6 November – 15 November
at normal
50.5°
—
October records over 66 years
76.3°15 October 2022All-time high
26.8°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Santiago (13 mi).
Sun, 1854° / 43°0
54 °
Copalis Beach, Sunday, 18 October
Overcast. High 54°, low 43°.
Pressure30.15 inHg
Wind3.5 mph W
Humidity75%
Visibility6.2 mi
Dew point46°
Mon, 1955° / 47°0
55 °
Copalis Beach, Monday, 19 October
Clear. High 55°, low 47°.
Pressure29.97 inHg
Wind3.9 mph S
Humidity74%
Visibility6.2 mi
Dew point46°
Tue, 2053° / 42°0
53 °
Copalis Beach, Tuesday, 20 October
Overcast. High 53°, low 42°.
Pressure30.06 inHg
Wind4.5 mph NW
Humidity80%
Visibility0.2 mi
Dew point47°
Wed, 2153° / 44°0
53 °
Copalis Beach, Wednesday, 21 October
Mostly clear. High 53°, low 44°.
Pressure29.97 inHg
Wind14.2 mph NW
Humidity83%
Visibility—
Dew point47°
Thu, 2254° / 52°0
54 °
Copalis Beach, Thursday, 22 October
Clear. High 54°, low 52°.
Pressure30.06 inHg
Wind15.3 mph NW
Humidity78%
Visibility—
Dew point47°
Fri, 2355° / 49°0
55 °
Copalis Beach, Friday, 23 October
Overcast. High 55°, low 49°.
Pressure30.03 inHg
Wind19.8 mph E
Humidity68%
Visibility—
Dew point44°
Sat, 2454° / 48°1.34
54 °
Copalis Beach, Saturday, 24 October
Rain. High 54°, low 48°.
Pressure29.56 inHg
Wind27.9 mph E
Humidity90%
Visibility—
Dew point50°
Sun, 2555° / 50°0.45
55 °
Copalis Beach, Sunday, 25 October
Rain. High 55°, low 50°.
Pressure29.88 inHg
Wind21.3 mph SE
Humidity87%
Visibility—
Dew point49°
Mon, 2655° / 51°1.17
55 °
Copalis Beach, Monday, 26 October
Rain. High 55°, low 51°.
Pressure29.74 inHg
Wind21.6 mph W
Humidity84%
Visibility—
Dew point50°
Tue, 2754° / 51°0.71
54 °
Copalis Beach, Tuesday, 27 October
Rain. High 54°, low 51°.
Pressure29.94 inHg
Wind23.2 mph NW
Humidity74%
Visibility—
Dew point44°
Wed, 2854° / 52°1.15
54 °
Copalis Beach, Wednesday, 28 October
Rain. High 54°, low 52°.
Pressure29.80 inHg
Wind28.7 mph SW
Humidity74%
Visibility—
Dew point45°
Thu, 2952° / 49°0.4
52 °
Copalis Beach, Thursday, 29 October
Light rain. High 52°, low 49°.
Pressure29.83 inHg
Wind12.1 mph NW
Humidity77%
Visibility—
Dew point44°
Fri, 3051° / 46°0.69
51 °
Copalis Beach, Friday, 30 October
Rain. High 51°, low 46°.
Pressure29.88 inHg
Wind29.5 mph SE
Humidity87%
Visibility—
Dew point46°
Sat, 3152° / 48°1.39
52 °
Copalis Beach, Saturday, 31 October
Rain. High 52°, low 48°.
Pressure29.44 inHg
Wind26.8 mph SE
Humidity76%
Visibility—
Dew point44°
Sun, 0152° / 45°0.04
52 °
Copalis Beach, Sunday, 1 November
Light rain. High 52°, low 45°.
Pressure29.71 inHg
Wind14.9 mph E
Humidity66%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0252° / 44°0.42
52 °
Copalis Beach, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.42 in
Chance of precipitation65%
Record high65° (1970)
Record low33° (2019)
Tue, 0352° / 45°0.56
52 °
Copalis Beach, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low45°
Average precipitation0.56 in
Chance of precipitation62%
Record high66° (2010)
Record low35° (1994)
Wed, 0452° / 45°0.59
52 °
Copalis Beach, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low45°
Average precipitation0.59 in
Chance of precipitation68%
Record high60° (1980)
Record low33° (1973)
Thu, 0551° / 44°0.44
51 °
Copalis Beach, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.44 in
Chance of precipitation72%
Record high60° (1960)
Record low30° (1973)
Fri, 0651° / 44°0.61
51 °
Copalis Beach, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.61 in
Chance of precipitation72%
Record high62° (1976)
Record low34° (1973)
Sat, 0751° / 44°0.55
51 °
Copalis Beach, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.55 in
Chance of precipitation70%
Record high59° (2019)
Record low35° (2019)
Sun, 0851° / 44°0.45
51 °
Copalis Beach, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.45 in
Chance of precipitation67%
Record high61° (2016)
Record low35° (2018)
Mon, 0950° / 43°0.58
50 °
Copalis Beach, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.58 in
Chance of precipitation68%
Record high61° (2025)
Record low29° (2022)
Tue, 1051° / 43°0.44
51 °
Copalis Beach, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.44 in
Chance of precipitation60%
Record high61° (1996)
Record low32° (2022)
Wed, 1151° / 43°0.58
51 °
Copalis Beach, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.58 in
Chance of precipitation70%
Record high59° (1976)
Record low31° (2018)
Thu, 1250° / 44°0.61
50 °
Copalis Beach, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.61 in
Chance of precipitation70%
Record high60° (1967)
Record low32° (1985)
Fri, 1350° / 44°0.6
50 °
Copalis Beach, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.6 in
Chance of precipitation68%
Record high60° (1967)
Record low31° (1985)
Sat, 1450° / 43°0.48
50 °
Copalis Beach, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.48 in
Chance of precipitation62%
Record high59° (1965)
Record low29° (2023)
Sun, 1550° / 42°0.62
50 °
Copalis Beach, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.62 in
Chance of precipitation68%
Record high57° (1997)
Record low28° (2022)
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 Copalis Beach, 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 Copalis Beach, 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.