Monthly outlook for Westhaven, WA: average high 55.4°, average low 48.6°. That is 0.2° above the climate normal for October. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 9 days and 4.9 inches. The warmest day looks like 22 October (62.3°), the coolest 24 October (42.8°).
55.4°/48.6°
Average high / low
+0.2°
Above normal
4 / 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
55.9°
55.7°
+0.1°
31 October – 9 November
54.7°
53.2°
+0.8°
10 November – 19 November
at normal
50.9°
—
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).
Thu, 2262° / 48°0
62 °
Westhaven, Thursday, 22 October
Overcast. High 62°, low 48°.
Pressure30.00 inHg
Wind19.6 mph NW
Humidity82%
Visibility6.2 mi
Dew point48°
Fri, 2351° / 44°0
51 °
Westhaven, Friday, 23 October
Clear. High 51°, low 44°.
Pressure30.33 inHg
Wind3 mph E
Humidity83%
Visibility—
Dew point43°
Sat, 2451° / 43°0
51 °
Westhaven, Saturday, 24 October
Overcast. High 51°, low 43°.
Pressure30.21 inHg
Wind2.2 mph E
Humidity90%
Visibility0.6 mi
Dew point43°
Sun, 2554° / 46°0
54 °
Westhaven, Sunday, 25 October
Overcast. High 54°, low 46°.
Pressure30.06 inHg
Wind4.2 mph E
Humidity79%
Visibility6.2 mi
Dew point45°
Mon, 2656° / 50°0.02
56 °
Westhaven, Monday, 26 October
Light rain. High 56°, low 50°.
Pressure30.12 inHg
Wind10 mph E
Humidity72%
Visibility—
Dew point46°
Tue, 2760° / 51°0
60 °
Westhaven, Tuesday, 27 October
Overcast. High 60°, low 51°.
Pressure30.12 inHg
Wind11.5 mph E
Humidity63%
Visibility—
Dew point46°
Wed, 2856° / 51°0
56 °
Westhaven, Wednesday, 28 October
Overcast. High 56°, low 51°.
Pressure30.03 inHg
Wind11.7 mph E
Humidity62%
Visibility—
Dew point42°
Thu, 2955° / 52°0.02
55 °
Westhaven, Thursday, 29 October
Light rain. High 55°, low 52°.
Pressure29.97 inHg
Wind12 mph S
Humidity87%
Visibility—
Dew point51°
Fri, 3054° / 51°0.1
54 °
Westhaven, Friday, 30 October
Light rain. High 54°, low 51°.
Pressure29.88 inHg
Wind15.1 mph NW
Humidity78%
Visibility—
Dew point46°
Sat, 3154° / 48°0.01
54 °
Westhaven, Saturday, 31 October
Light rain. High 54°, low 48°.
Pressure30.03 inHg
Wind8.8 mph NW
Humidity76%
Visibility—
Dew point45°
Sun, 0155° / 45°0
55 °
Westhaven, Sunday, 1 November
Overcast. High 55°, low 45°.
Pressure30.21 inHg
Wind12.2 mph NE
Humidity73%
Visibility—
Dew point41°
Mon, 0254° / 46°0
54 °
Westhaven, Monday, 2 November
Overcast. High 54°, low 46°.
Pressure30.27 inHg
Wind11.9 mph E
Humidity65%
Visibility—
Dew point39°
Tue, 0355° / 49°0.39
55 °
Westhaven, Tuesday, 3 November
Rain. High 55°, low 49°.
Pressure30.18 inHg
Wind27.2 mph S
Humidity78%
Visibility—
Dew point46°
Wed, 0454° / 52°0.42
54 °
Westhaven, Wednesday, 4 November
Rain. High 54°, low 52°.
Pressure30.15 inHg
Wind16 mph SE
Humidity88%
Visibility—
Dew point50°
Thu, 0557° / 55°1.3
57 °
Westhaven, Thursday, 5 November
Rain. High 57°, low 55°.
Pressure29.91 inHg
Wind24.1 mph S
Humidity99%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 1650° / 43°0.37
50 °
Westhaven, Monday, 16 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.37 in
Chance of precipitation77%
Record high60° (1965)
Record low31° (2000)
Tue, 1750° / 41°0.32
50 °
Westhaven, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.32 in
Chance of precipitation68%
Record high60° (1995)
Record low32° (1961)
Wed, 1849° / 41°0.28
49 °
Westhaven, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.28 in
Chance of precipitation62%
Record high57° (2023)
Record low29° (1985)
Thu, 1950° / 41°0.47
50 °
Westhaven, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.47 in
Chance of precipitation72%
Record high60° (1987)
Record low28° (1977)
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.