Monthly outlook for Westhaven, WA: average high 54.2°, average low 49.3°. That is 1.1° below the climate normal for October. Precipitation is expected on 10 days (about 7.1 inches), against a normal of 8 days and 4.6 inches. The warmest day looks like 17 October (58.6°), the coolest 1 November (43.4°).
54.2°/49.3°
Average high / low
−1.1°
Below normal
10 / 8
Wet days / normal
7.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
54.9°
57.3°
-1.3°
27 October – 5 November
52.9°
54.1°
-0.7°
6 November – 15 November
at normal
51.9°
—
October records over 66 years
81.7°6 October 1987All-time high
30.7°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Markham (6 mi).
Sun, 1854° / 44°0
54 °
Westhaven, Sunday, 18 October
Overcast. High 54°, low 44°.
Pressure30.15 inHg
Wind2.7 mph NW
Humidity81%
Visibility—
Dew point47°
Mon, 1955° / 49°0
55 °
Westhaven, Monday, 19 October
Clear. High 55°, low 49°.
Pressure29.97 inHg
Wind2.3 mph SE
Humidity77%
Visibility6.2 mi
Dew point47°
Tue, 2055° / 48°0
55 °
Westhaven, Tuesday, 20 October
Clear. High 55°, low 48°.
Pressure30.06 inHg
Wind4 mph NE
Humidity75%
Visibility6.2 mi
Dew point47°
Wed, 2152° / 48°0
52 °
Westhaven, Wednesday, 21 October
Partly cloudy. High 52°, low 48°.
Pressure29.97 inHg
Wind15.4 mph NW
Humidity92%
Visibility—
Dew point49°
Thu, 2254° / 53°0
54 °
Westhaven, Thursday, 22 October
Mostly clear. High 54°, low 53°.
Pressure30.06 inHg
Wind17.4 mph NW
Humidity78%
Visibility—
Dew point47°
Fri, 2355° / 51°0
55 °
Westhaven, Friday, 23 October
Light rain. High 55°, low 51°.
Pressure30.03 inHg
Wind16 mph E
Humidity67%
Visibility—
Dew point44°
Sat, 2454° / 49°1.33
54 °
Westhaven, Saturday, 24 October
Rain. High 54°, low 49°.
Pressure29.59 inHg
Wind39.4 mph SW
Humidity93%
Visibility—
Dew point51°
Sun, 2556° / 52°0.52
56 °
Westhaven, Sunday, 25 October
Rain. High 56°, low 52°.
Pressure29.88 inHg
Wind21 mph S
Humidity83%
Visibility—
Dew point50°
Mon, 2655° / 52°1.05
55 °
Westhaven, Monday, 26 October
Rain. High 55°, low 52°.
Pressure29.74 inHg
Wind21.7 mph W
Humidity84%
Visibility—
Dew point50°
Tue, 2754° / 50°0.68
54 °
Westhaven, Tuesday, 27 October
Rain. High 54°, low 50°.
Pressure29.94 inHg
Wind22.7 mph W
Humidity74%
Visibility—
Dew point45°
Wed, 2854° / 51°1.05
54 °
Westhaven, Wednesday, 28 October
Rain. High 54°, low 51°.
Pressure29.80 inHg
Wind30.7 mph SW
Humidity75%
Visibility—
Dew point46°
Thu, 2952° / 49°0.47
52 °
Westhaven, Thursday, 29 October
Light rain. High 52°, low 49°.
Pressure29.80 inHg
Wind16.1 mph W
Humidity73%
Visibility—
Dew point44°
Fri, 3051° / 48°0.65
51 °
Westhaven, Friday, 30 October
Rain. High 51°, low 48°.
Pressure29.88 inHg
Wind30.4 mph SE
Humidity86%
Visibility—
Dew point47°
Sat, 3153° / 49°1.18
53 °
Westhaven, Saturday, 31 October
Rain. High 53°, low 49°.
Pressure29.44 inHg
Wind33.9 mph S
Humidity76%
Visibility—
Dew point44°
Sun, 0153° / 43°0.05
53 °
Westhaven, Sunday, 1 November
Light rain. High 53°, low 43°.
Pressure29.71 inHg
Wind15.9 mph E
Humidity79%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0254° / 44°0.31
54 °
Westhaven, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation60%
Record high65° (1962)
Record low34° (1973)
Tue, 0354° / 45°0.33
54 °
Westhaven, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.33 in
Chance of precipitation62%
Record high65° (2010)
Record low31° (2003)
Wed, 0454° / 45°0.41
54 °
Westhaven, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.41 in
Chance of precipitation65%
Record high63° (1980)
Record low33° (1973)
Thu, 0553° / 44°0.31
53 °
Westhaven, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.31 in
Chance of precipitation70%
Record high64° (1987)
Record low30° (1973)
Fri, 0653° / 44°0.4
53 °
Westhaven, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.4 in
Chance of precipitation70%
Record high61° (1976)
Record low34° (2017)
Sat, 0753° / 45°0.34
53 °
Westhaven, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low45°
Average precipitation0.34 in
Chance of precipitation70%
Record high61° (2024)
Record low35° (1973)
Sun, 0852° / 43°0.25
52 °
Westhaven, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.25 in
Chance of precipitation58%
Record high65° (2016)
Record low34° (1977)
Mon, 0952° / 43°0.34
52 °
Westhaven, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.34 in
Chance of precipitation67%
Record high64° (2025)
Record low32° (1982)
Tue, 1052° / 43°0.26
52 °
Westhaven, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.26 in
Chance of precipitation53%
Record high62° (1976)
Record low32° (1982)
Wed, 1152° / 43°0.39
52 °
Westhaven, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.39 in
Chance of precipitation63%
Record high61° (1976)
Record low30° (1985)
Thu, 1252° / 44°0.4
52 °
Westhaven, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.4 in
Chance of precipitation67%
Record high60° (1967)
Record low29° (1985)
Fri, 1351° / 43°0.45
51 °
Westhaven, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.45 in
Chance of precipitation68%
Record high61° (1969)
Record low28° (1978)
Sat, 1451° / 43°0.38
51 °
Westhaven, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.38 in
Chance of precipitation52%
Record high63° (1995)
Record low29° (1978)
Sun, 1551° / 42°0.41
51 °
Westhaven, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.41 in
Chance of precipitation65%
Record high58° (2001)
Record low31° (1964)
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 Westhaven, 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 Westhaven, 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.