Monthly outlook for Boston Harbor, WA: average high 52.7°, average low 41.4°. That is 2.7° above the climate normal for November. Precipitation is expected on 8 days (about 3.3 inches), against a normal of 10 days and 4.4 inches. The warmest day looks like 24 November (58°), the coolest 20 November (33.2°).
52.7°/41.4°
Average high / low
+2.7°
Above normal
8 / 10
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
52°
48.6°
+1.9°
25 November – 4 December
53.8°
46.3°
+4.2°
5 December – 14 December
at normal
45.1°
—
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).
Mon, 1654° / 41°0.58
54 °
Boston Harbor, Monday, 16 November
Rain. High 54°, low 41°.
Pressure30.09 inHg
Wind3.2 mph S
Humidity79%
Visibility6.2 mi
Dew point46°
Tue, 1751° / 40°0.04
51 °
Boston Harbor, Tuesday, 17 November
Light rain. High 51°, low 40°.
Pressure30.00 inHg
Wind3.6 mph SW
Humidity87%
Visibility5.0 mi
Dew point45°
Wed, 1853° / 40°0
53 °
Boston Harbor, Wednesday, 18 November
Overcast. High 53°, low 40°.
Pressure29.94 inHg
Wind5.5 mph NE
Humidity51%
Visibility6.2 mi
Dew point34°
Thu, 1955° / 38°0
55 °
Boston Harbor, Thursday, 19 November
Clear. High 55°, low 38°.
Pressure30.12 inHg
Wind6.5 mph NE
Humidity71%
Visibility—
Dew point38°
Fri, 2051° / 33°0
51 °
Boston Harbor, Friday, 20 November
Mostly clear. High 51°, low 33°.
Pressure29.97 inHg
Wind2.7 mph NE
Humidity86%
Visibility—
Dew point38°
Sat, 2144° / 40°0.2
44 °
Boston Harbor, Saturday, 21 November
Light rain. High 44°, low 40°.
Pressure29.88 inHg
Wind5.6 mph NE
Humidity92%
Visibility—
Dew point40°
Sun, 2249° / 40°0.07
49 °
Boston Harbor, Sunday, 22 November
Light rain. High 49°, low 40°.
Pressure29.85 inHg
Wind11.8 mph S
Humidity82%
Visibility—
Dew point39°
Mon, 2350° / 44°0.63
50 °
Boston Harbor, Monday, 23 November
Rain. High 50°, low 44°.
Pressure29.80 inHg
Wind11 mph S
Humidity91%
Visibility—
Dew point43°
Tue, 2458° / 50°1.19
58 °
Boston Harbor, Tuesday, 24 November
Rain. High 58°, low 50°.
Pressure29.53 inHg
Wind13.3 mph S
Humidity87%
Visibility—
Dew point51°
Wed, 2555° / 47°0.17
55 °
Boston Harbor, Wednesday, 25 November
Light rain. High 55°, low 47°.
Pressure29.74 inHg
Wind3.7 mph NE
Humidity88%
Visibility—
Dew point47°
Thu, 2655° / 43°0
55 °
Boston Harbor, Thursday, 26 November
Partly cloudy. High 55°, low 43°.
Pressure30.27 inHg
Wind3.2 mph E
Humidity89%
Visibility—
Dew point46°
Fri, 2751° / 41°0
51 °
Boston Harbor, Friday, 27 November
Overcast. High 51°, low 41°.
Pressure30.33 inHg
Wind4 mph NE
Humidity89%
Visibility—
Dew point43°
Sat, 2853° / 38°0
53 °
Boston Harbor, Saturday, 28 November
Mostly clear. High 53°, low 38°.
Pressure30.09 inHg
Wind5.6 mph NE
Humidity79%
Visibility—
Dew point39°
Sun, 2957° / 40°0
57 °
Boston Harbor, Sunday, 29 November
Overcast. High 57°, low 40°.
Pressure30.09 inHg
Wind3.8 mph S
Humidity51%
Visibility—
Dew point37°
Mon, 3053° / 41°0
53 °
Boston Harbor, Monday, 30 November
Overcast. High 53°, low 41°.
Pressure30.06 inHg
Wind3.4 mph NE
Humidity58%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 0945° / 37°0.29
45 °
Boston Harbor, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation58%
Record high56° (2014)
Record low15° (1972)
Thu, 1045° / 37°0.36
45 °
Boston Harbor, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.36 in
Chance of precipitation68%
Record high58° (2014)
Record low16° (1972)
Fri, 1145° / 37°0.35
45 °
Boston Harbor, Friday, 11 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.35 in
Chance of precipitation68%
Record high57° (2025)
Record low25° (1972)
Sat, 1245° / 37°0.29
45 °
Boston Harbor, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation63%
Record high58° (1995)
Record low26° (1972)
Sun, 1345° / 37°0.29
45 °
Boston Harbor, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation60%
Record high59° (2025)
Record low12° (1972)
Mon, 1445° / 38°0.31
45 °
Boston Harbor, Monday, 14 December
Climate normal for this date — 60-year average.
Average high45°
Average low38°
Average precipitation0.31 in
Chance of precipitation67%
Record high56° (1962)
Record low26° (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.