Monthly outlook for Cosmopolis, WA: average high 61.9°, average low 43.2°. That is 1.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 7 days and 3.3 inches. The warmest day looks like 8 October (70.2°), the coolest 23 October (37.9°).
61.9°/43.2°
Average high / low
+1.9°
Above normal
4 / 7
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
62.9°
59.4°
+1.9°
18 October – 27 October
60.3°
56.4°
+2.2°
28 October – 6 November
at normal
53.3°
—
October records over 66 years
81.3°1 October 1987All-time high
28.4°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Hoquiam (7 mi).
Fri, 0962° / 49°0.11
62 °
Cosmopolis, Friday, 9 October
Rain. High 62°, low 49°.
Pressure29.88 inHg
Wind13.8 mph NW
Humidity62%
Visibility6.2 mi
Dew point45°
Sat, 1059° / 45°0.02
59 °
Cosmopolis, Saturday, 10 October
Light rain. High 59°, low 45°.
Pressure29.83 inHg
Wind6.4 mph E
Humidity63%
Visibility6.2 mi
Dew point44°
Sun, 1162° / 40°0
62 °
Cosmopolis, Sunday, 11 October
Clear. High 62°, low 40°.
Pressure29.97 inHg
Wind3.3 mph NE
Humidity55%
Visibility6.2 mi
Dew point42°
Mon, 1262° / 38°0
62 °
Cosmopolis, Monday, 12 October
Clear. High 62°, low 38°.
Pressure30.00 inHg
Wind6.4 mph E
Humidity45%
Visibility—
Dew point37°
Tue, 1360° / 39°0.07
60 °
Cosmopolis, Tuesday, 13 October
Light rain. High 60°, low 39°.
Pressure30.03 inHg
Wind8.7 mph W
Humidity50%
Visibility—
Dew point39°
Wed, 1459° / 44°0.07
59 °
Cosmopolis, Wednesday, 14 October
Light rain. High 59°, low 44°.
Pressure30.09 inHg
Wind11.4 mph NW
Humidity56%
Visibility—
Dew point42°
Thu, 1562° / 41°0
62 °
Cosmopolis, Thursday, 15 October
Clear. High 62°, low 41°.
Pressure30.36 inHg
Wind8.6 mph E
Humidity45%
Visibility—
Dew point38°
Fri, 1666° / 43°0
66 °
Cosmopolis, Friday, 16 October
Overcast. High 66°, low 43°.
Pressure30.24 inHg
Wind9.7 mph E
Humidity32%
Visibility—
Dew point32°
Sat, 1768° / 43°0
68 °
Cosmopolis, Saturday, 17 October
Partly cloudy. High 68°, low 43°.
Pressure30.12 inHg
Wind4.7 mph E
Humidity35%
Visibility—
Dew point36°
Sun, 1860° / 46°0.13
60 °
Cosmopolis, Sunday, 18 October
Light rain. High 60°, low 46°.
Pressure30.15 inHg
Wind8.6 mph SW
Humidity63%
Visibility—
Dew point46°
Mon, 1961° / 46°0
61 °
Cosmopolis, Monday, 19 October
Light rain. High 61°, low 46°.
Pressure30.36 inHg
Wind5.8 mph W
Humidity89%
Visibility—
Dew point53°
Tue, 2062° / 45°0
62 °
Cosmopolis, Tuesday, 20 October
Overcast. High 62°, low 45°.
Pressure30.42 inHg
Wind5.9 mph W
Humidity77%
Visibility—
Dew point47°
Wed, 2164° / 44°0
64 °
Cosmopolis, Wednesday, 21 October
Overcast. High 64°, low 44°.
Pressure30.45 inHg
Wind9.4 mph NE
Humidity64%
Visibility—
Dew point42°
Thu, 2258° / 43°0.01
58 °
Cosmopolis, Thursday, 22 October
Light rain. High 58°, low 43°.
Pressure30.18 inHg
Wind14.7 mph NW
Humidity53%
Visibility—
Dew point39°
Fri, 2356° / 38°0
56 °
Cosmopolis, Friday, 23 October
Clear. High 56°, low 38°.
Pressure30.21 inHg
Wind6.8 mph N
Humidity58%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2456° / 46°0.28
56 °
Cosmopolis, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.28 in
Chance of precipitation47%
Record high71° (1965)
Record low36° (1961)
Sun, 2555° / 46°0.31
55 °
Cosmopolis, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.31 in
Chance of precipitation60%
Record high68° (1965)
Record low34° (1970)
Mon, 2655° / 45°0.32
55 °
Cosmopolis, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.32 in
Chance of precipitation53%
Record high69° (1965)
Record low35° (1970)
Tue, 2755° / 44°0.28
55 °
Cosmopolis, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.28 in
Chance of precipitation48%
Record high67° (2017)
Record low33° (1971)
Wed, 2854° / 44°0.34
54 °
Cosmopolis, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.34 in
Chance of precipitation65%
Record high69° (1962)
Record low28° (1971)
Thu, 2954° / 44°0.22
54 °
Cosmopolis, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.22 in
Chance of precipitation50%
Record high66° (1962)
Record low33° (1971)
Fri, 3054° / 44°0.3
54 °
Cosmopolis, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.3 in
Chance of precipitation60%
Record high62° (2017)
Record low32° (1991)
Sat, 3154° / 44°0.31
54 °
Cosmopolis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation53%
Record high63° (1966)
Record low32° (1984)
Sun, 0154° / 44°0.3
54 °
Cosmopolis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.3 in
Chance of precipitation48%
Record high65° (1969)
Record low32° (2003)
Mon, 0253° / 44°0.31
53 °
Cosmopolis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.31 in
Chance of precipitation60%
Record high65° (1962)
Record low33° (1995)
Tue, 0353° / 44°0.34
53 °
Cosmopolis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.34 in
Chance of precipitation62%
Record high65° (2010)
Record low29° (2003)
Wed, 0453° / 44°0.41
53 °
Cosmopolis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.41 in
Chance of precipitation65%
Record high63° (1980)
Record low33° (1973)
Thu, 0552° / 43°0.31
52 °
Cosmopolis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.31 in
Chance of precipitation70%
Record high63° (1987)
Record low28° (1973)
Fri, 0652° / 43°0.39
52 °
Cosmopolis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.39 in
Chance of precipitation70%
Record high60° (1976)
Record low33° (1966)
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 Cosmopolis, 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 Cosmopolis, 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.