Monthly outlook for Boston Harbor, WA: average high 52.4°, average low 40.7°. That is 1.5° above the climate normal for November. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 10 days and 4.5 inches. The warmest day looks like 11 November (67.2°), the coolest 22 November (31.3°).
52.4°/40.7°
Average high / low
+1.5°
Above normal
7 / 10
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 November – 18 November
55.4°
51°
+2.5°
19 November – 28 November
47.4°
47.4°
+0°
29 November – 8 December
at normal
45.5°
—
November records over 66 years
67.5°4 November 1980All-time high
5.9°30 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Olympia (7 mi).
Tue, 1059° / 50°0.82
59 °
Boston Harbor, Tuesday, 10 November
Rain. High 59°, low 50°.
Pressure30.03 inHg
Wind1.2 mph E
Humidity97%
Visibility1.8 mi
Dew point57°
Wed, 1167° / 53°0.06
67 °
Boston Harbor, Wednesday, 11 November
Rain. High 67°, low 53°.
Pressure29.94 inHg
Wind12.1 mph S
Humidity62%
Visibility6.2 mi
Dew point53°
Thu, 1262° / 49°0
62 °
Boston Harbor, Thursday, 12 November
Overcast. High 62°, low 49°.
Pressure29.71 inHg
Wind1.7 mph SE
Humidity73%
Visibility6.2 mi
Dew point51°
Fri, 1357° / 51°0.28
57 °
Boston Harbor, Friday, 13 November
Rain. High 57°, low 51°.
Pressure29.32 inHg
Wind12.8 mph S
Humidity96%
Visibility—
Dew point51°
Sat, 1457° / 47°0.24
57 °
Boston Harbor, Saturday, 14 November
Rain. High 57°, low 47°.
Pressure29.65 inHg
Wind12.6 mph S
Humidity85%
Visibility—
Dew point47°
Sun, 1550° / 45°0.33
50 °
Boston Harbor, Sunday, 15 November
Rain. High 50°, low 45°.
Pressure29.59 inHg
Wind11 mph W
Humidity90%
Visibility—
Dew point45°
Mon, 1652° / 40°0.01
52 °
Boston Harbor, Monday, 16 November
Light rain. High 52°, low 40°.
Pressure30.06 inHg
Wind7.4 mph SW
Humidity86%
Visibility—
Dew point41°
Tue, 1750° / 37°0
50 °
Boston Harbor, Tuesday, 17 November
Mostly clear. High 50°, low 37°.
Pressure30.39 inHg
Wind3.3 mph NE
Humidity84%
Visibility—
Dew point40°
Wed, 1849° / 35°0
49 °
Boston Harbor, Wednesday, 18 November
Partly cloudy. High 49°, low 35°.
Pressure30.24 inHg
Wind4.2 mph E
Humidity83%
Visibility—
Dew point37°
Thu, 1948° / 35°0
48 °
Boston Harbor, Thursday, 19 November
Overcast. High 48°, low 35°.
Pressure30.12 inHg
Wind4 mph NE
Humidity66%
Visibility—
Dew point30°
Fri, 2048° / 32°0
48 °
Boston Harbor, Friday, 20 November
Clear. High 48°, low 32°.
Pressure30.21 inHg
Wind1.6 mph NE
Humidity72%
Visibility—
Dew point31°
Sat, 2148° / 31°0
48 °
Boston Harbor, Saturday, 21 November
Clear. High 48°, low 31°.
Pressure30.21 inHg
Wind3.4 mph NE
Humidity67%
Visibility—
Dew point29°
Sun, 2248° / 31°0
48 °
Boston Harbor, Sunday, 22 November
Clear. High 48°, low 31°.
Pressure30.12 inHg
Wind3.1 mph NE
Humidity68%
Visibility—
Dew point29°
Mon, 2347° / 31°0
47 °
Boston Harbor, Monday, 23 November
Partly cloudy. High 47°, low 31°.
Pressure29.91 inHg
Wind4.1 mph NE
Humidity58%
Visibility—
Dew point26°
Tue, 2446° / 39°0.13
46 °
Boston Harbor, Tuesday, 24 November
Light rain. High 46°, low 39°.
Pressure29.56 inHg
Wind5.3 mph NE
Humidity76%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2547° / 38°0.34
47 °
Boston Harbor, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.34 in
Chance of precipitation65%
Record high57° (1977)
Record low14° (1985)
Thu, 2647° / 38°0.22
47 °
Boston Harbor, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.22 in
Chance of precipitation47%
Record high59° (2014)
Record low25° (1985)
Fri, 2747° / 39°0.27
47 °
Boston Harbor, Friday, 27 November
Climate normal for this date — 60-year average.
Average high47°
Average low39°
Average precipitation0.27 in
Chance of precipitation65%
Record high56° (2014)
Record low24° (1985)
Sat, 2846° / 38°0.2
46 °
Boston Harbor, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.2 in
Chance of precipitation52%
Record high57° (2021)
Record low24° (1985)
Sun, 2946° / 37°0.24
46 °
Boston Harbor, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.24 in
Chance of precipitation55%
Record high56° (2021)
Record low19° (1985)
Mon, 3046° / 38°0.28
46 °
Boston Harbor, Monday, 30 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.28 in
Chance of precipitation60%
Record high55° (2008)
Record low6° (1985)
Tue, 0146° / 38°0.3
46 °
Boston Harbor, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.3 in
Chance of precipitation62%
Record high55° (2021)
Record low15° (1985)
Wed, 0246° / 38°0.38
46 °
Boston Harbor, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.38 in
Chance of precipitation63%
Record high54° (2021)
Record low23° (1985)
Thu, 0346° / 38°0.32
46 °
Boston Harbor, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.32 in
Chance of precipitation53%
Record high56° (1965)
Record low29° (1984)
Fri, 0446° / 37°0.27
46 °
Boston Harbor, Friday, 4 December
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.27 in
Chance of precipitation57%
Record high57° (2023)
Record low24° (1970)
Sat, 0545° / 37°0.23
45 °
Boston Harbor, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.23 in
Chance of precipitation52%
Record high57° (2023)
Record low25° (1972)
Sun, 0645° / 37°0.23
45 °
Boston Harbor, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.23 in
Chance of precipitation57%
Record high55° (1965)
Record low23° (1972)
Mon, 0744° / 37°0.22
44 °
Boston Harbor, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low37°
Average precipitation0.22 in
Chance of precipitation55%
Record high54° (2025)
Record low19° (1972)
Tue, 0845° / 37°0.26
45 °
Boston Harbor, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.26 in
Chance of precipitation55%
Record high56° (2015)
Record low12° (1972)
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 Boston Harbor, 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 Boston Harbor, 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.