Monthly outlook for Chinook, WA: average high 57.1°, average low 48.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 9 days and 4.7 inches. The warmest day looks like 21 October (66.1°), the coolest 23 October (39.2°).
57.1°/48.6°
Average high / low
+1.2°
Above normal
6 / 9
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
57.4°
55.4°
+1.1°
31 October – 9 November
56.6°
53.4°
+1.8°
10 November – 19 November
at normal
51.5°
—
October records over 66 years
81.5°15 October 2022All-time high
34.5°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Long Beach (8 mi).
Thu, 2261° / 41°0
61 °
Chinook, Thursday, 22 October
Light rain. High 61°, low 41°.
Pressure30.00 inHg
Wind12.4 mph NW
Humidity86%
Visibility5.8 mi
Dew point52°
Fri, 2355° / 39°0
55 °
Chinook, Friday, 23 October
Clear. High 55°, low 39°.
Pressure30.33 inHg
Wind4.7 mph NW
Humidity71%
Visibility6.2 mi
Dew point45°
Sat, 2454° / 42°0.02
54 °
Chinook, Saturday, 24 October
Light rain. High 54°, low 42°.
Pressure30.18 inHg
Wind1.7 mph NW
Humidity69%
Visibility6.2 mi
Dew point41°
Sun, 2554° / 46°0.78
54 °
Chinook, Sunday, 25 October
Rain. High 54°, low 46°.
Pressure30.06 inHg
Wind9.2 mph E
Humidity97%
Visibility2.2 mi
Dew point50°
Mon, 2660° / 48°0.01
60 °
Chinook, Monday, 26 October
Light rain. High 60°, low 48°.
Pressure30.09 inHg
Wind5.5 mph E
Humidity75%
Visibility—
Dew point46°
Tue, 2759° / 50°0
59 °
Chinook, Tuesday, 27 October
Overcast. High 59°, low 50°.
Pressure30.09 inHg
Wind8.5 mph SE
Humidity72%
Visibility—
Dew point45°
Wed, 2856° / 53°0
56 °
Chinook, Wednesday, 28 October
Overcast. High 56°, low 53°.
Pressure30.06 inHg
Wind8.1 mph E
Humidity63%
Visibility—
Dew point43°
Thu, 2955° / 52°0
55 °
Chinook, Thursday, 29 October
Overcast. High 55°, low 52°.
Pressure30.03 inHg
Wind5.8 mph E
Humidity63%
Visibility—
Dew point41°
Fri, 3054° / 51°0.18
54 °
Chinook, Friday, 30 October
Light rain. High 54°, low 51°.
Pressure29.94 inHg
Wind5.9 mph SE
Humidity81%
Visibility—
Dew point47°
Sat, 3154° / 51°0.02
54 °
Chinook, Saturday, 31 October
Light rain. High 54°, low 51°.
Pressure29.97 inHg
Wind10.9 mph N
Humidity82%
Visibility—
Dew point46°
Sun, 0159° / 48°0
59 °
Chinook, Sunday, 1 November
Partly cloudy. High 59°, low 48°.
Pressure29.88 inHg
Wind11.2 mph E
Humidity74%
Visibility—
Dew point44°
Mon, 0255° / 52°0.11
55 °
Chinook, Monday, 2 November
Light rain. High 55°, low 52°.
Pressure29.88 inHg
Wind13.9 mph E
Humidity75%
Visibility—
Dew point47°
Tue, 0356° / 53°0.54
56 °
Chinook, Tuesday, 3 November
Rain. High 56°, low 53°.
Pressure30.00 inHg
Wind17.4 mph S
Humidity96%
Visibility—
Dew point54°
Wed, 0457° / 55°0.22
57 °
Chinook, Wednesday, 4 November
Light rain. High 57°, low 55°.
Pressure29.94 inHg
Wind12.4 mph E
Humidity96%
Visibility—
Dew point55°
Thu, 0558° / 53°0.37
58 °
Chinook, Thursday, 5 November
Light rain. High 58°, low 53°.
Pressure29.85 inHg
Wind27.1 mph S
Humidity92%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0653° / 47°0.41
53 °
Chinook, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low47°
Average precipitation0.41 in
Chance of precipitation67%
Record high60° (1976)
Record low39° (2003)
Sat, 0753° / 47°0.35
53 °
Chinook, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low47°
Average precipitation0.35 in
Chance of precipitation65%
Record high62° (2016)
Record low40° (2022)
Sun, 0852° / 46°0.26
52 °
Chinook, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.26 in
Chance of precipitation58%
Record high63° (2016)
Record low38° (2020)
Mon, 0952° / 46°0.32
52 °
Chinook, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.32 in
Chance of precipitation70%
Record high62° (2025)
Record low35° (2020)
Tue, 1052° / 46°0.26
52 °
Chinook, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.26 in
Chance of precipitation58%
Record high60° (1996)
Record low35° (1985)
Wed, 1153° / 46°0.35
53 °
Chinook, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low46°
Average precipitation0.35 in
Chance of precipitation65%
Record high61° (2016)
Record low35° (1985)
Thu, 1252° / 46°0.35
52 °
Chinook, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.35 in
Chance of precipitation63%
Record high62° (1967)
Record low33° (1985)
Fri, 1352° / 46°0.45
52 °
Chinook, Friday, 13 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.45 in
Chance of precipitation72%
Record high60° (1969)
Record low32° (1978)
Sat, 1452° / 46°0.35
52 °
Chinook, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low46°
Average precipitation0.35 in
Chance of precipitation48%
Record high60° (1995)
Record low36° (1978)
Sun, 1552° / 45°0.33
52 °
Chinook, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low45°
Average precipitation0.33 in
Chance of precipitation62%
Record high59° (2001)
Record low36° (1982)
Mon, 1651° / 46°0.35
51 °
Chinook, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.35 in
Chance of precipitation73%
Record high58° (1965)
Record low36° (1962)
Tue, 1751° / 45°0.35
51 °
Chinook, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low45°
Average precipitation0.35 in
Chance of precipitation73%
Record high60° (1995)
Record low36° (1993)
Wed, 1850° / 45°0.28
50 °
Chinook, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low45°
Average precipitation0.28 in
Chance of precipitation65%
Record high56° (1968)
Record low33° (1994)
Thu, 1951° / 44°0.47
51 °
Chinook, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.47 in
Chance of precipitation70%
Record high59° (1987)
Record low31° (2011)
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 Chinook, 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 Chinook, 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.