Monthly outlook for Copalis Beach, WA: average high 55.8°, average low 48.7°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 9 days and 6.7 inches. The warmest day looks like 16 October (62.5°), the coolest 20 October (42.6°).
55.8°/48.7°
Average high / low
+0.9°
Above normal
4 / 9
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
56.3°
54.9°
+0.8°
26 October – 4 November
54.9°
52.6°
+1.3°
5 November – 14 November
at normal
50.6°
—
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).
Sat, 1761° / 52°0.17
61 °
Copalis Beach, Saturday, 17 October
Rain. High 61°, low 52°.
Pressure30.30 inHg
Wind7.2 mph NW
Humidity80%
Visibility6.2 mi
Dew point50°
Sun, 1854° / 46°0
54 °
Copalis Beach, Sunday, 18 October
Overcast. High 54°, low 46°.
Pressure30.18 inHg
Wind1.1 mph W
Humidity69%
Visibility6.2 mi
Dew point44°
Mon, 1955° / 47°0
55 °
Copalis Beach, Monday, 19 October
Overcast. High 55°, low 47°.
Pressure29.94 inHg
Wind3.9 mph S
Humidity69%
Visibility6.2 mi
Dew point44°
Tue, 2053° / 43°0
53 °
Copalis Beach, Tuesday, 20 October
Clear. High 53°, low 43°.
Pressure30.06 inHg
Wind1 mph SW
Humidity79%
Visibility2.3 mi
Dew point45°
Wed, 2153° / 44°0
53 °
Copalis Beach, Wednesday, 21 October
Overcast. High 53°, low 44°.
Pressure30.00 inHg
Wind12.7 mph NW
Humidity85%
Visibility—
Dew point46°
Thu, 2253° / 49°0.1
53 °
Copalis Beach, Thursday, 22 October
Light rain. High 53°, low 49°.
Pressure30.03 inHg
Wind18.5 mph NW
Humidity91%
Visibility—
Dew point49°
Fri, 2354° / 47°0
54 °
Copalis Beach, Friday, 23 October
Clear. High 54°, low 47°.
Pressure30.30 inHg
Wind9.3 mph E
Humidity66%
Visibility—
Dew point42°
Sat, 2459° / 46°0
59 °
Copalis Beach, Saturday, 24 October
Mostly clear. High 59°, low 46°.
Pressure30.12 inHg
Wind17 mph E
Humidity59%
Visibility—
Dew point42°
Sun, 2557° / 48°0
57 °
Copalis Beach, Sunday, 25 October
Clear. High 57°, low 48°.
Pressure30.06 inHg
Wind16.7 mph E
Humidity58%
Visibility—
Dew point40°
Mon, 2657° / 49°0
57 °
Copalis Beach, Monday, 26 October
Overcast. High 57°, low 49°.
Pressure29.91 inHg
Wind11.1 mph NW
Humidity56%
Visibility—
Dew point40°
Tue, 2755° / 50°0
55 °
Copalis Beach, Tuesday, 27 October
Overcast. High 55°, low 50°.
Pressure29.71 inHg
Wind10.7 mph S
Humidity83%
Visibility—
Dew point48°
Wed, 2854° / 51°0.01
54 °
Copalis Beach, Wednesday, 28 October
Light rain. High 54°, low 51°.
Pressure29.91 inHg
Wind8.5 mph W
Humidity85%
Visibility—
Dew point49°
Thu, 2954° / 52°0.04
54 °
Copalis Beach, Thursday, 29 October
Light rain. High 54°, low 52°.
Pressure30.12 inHg
Wind8.1 mph SE
Humidity84%
Visibility—
Dew point49°
Fri, 3054° / 53°0.09
54 °
Copalis Beach, Friday, 30 October
Light rain. High 54°, low 53°.
Pressure30.12 inHg
Wind18.7 mph S
Humidity79%
Visibility—
Dew point47°
Sat, 3156° / 52°0.69
56 °
Copalis Beach, Saturday, 31 October
Rain. High 56°, low 52°.
Pressure29.94 inHg
Wind25.9 mph S
Humidity78%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0153° / 44°0.43
53 °
Copalis Beach, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.43 in
Chance of precipitation53%
Record high64° (1969)
Record low30° (2019)
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)
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.