Monthly outlook for Dedham Island, MA: average high 51.1°, average low 38.1°. That is 1.6° above the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 20 November (57.3°), the coolest 23 November (33.3°).
51.1°/38.1°
Average high / low
+1.6°
Above normal
3 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 November – 19 November
49.7°
49.4°
+0.1°
20 November – 29 November
53.5°
46.5°
+3.9°
30 November – 9 December
at normal
42.5°
—
November records over 66 years
76.6°1 November 2024All-time high
9.7°22 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Brookline (4 mi).
Wed, 1153° / 39°0
53 °
Dedham Island, Wednesday, 11 November
Overcast. High 53°, low 39°.
Pressure29.88 inHg
Wind8.8 mph W
Humidity50%
Visibility6.2 mi
Dew point34°
Thu, 1249° / 38°0.04
49 °
Dedham Island, Thursday, 12 November
Light rain. High 49°, low 38°.
Pressure29.74 inHg
Wind8.8 mph E
Humidity65%
Visibility6.2 mi
Dew point38°
Fri, 1343° / 34°0.48
43 °
Dedham Island, Friday, 13 November
Snow. High 43°, low 34°.
Pressure29.53 inHg
Wind12.3 mph N
Humidity94%
Visibility4.1 mi
Dew point34°
Sat, 1446° / 35°0
46 °
Dedham Island, Saturday, 14 November
Overcast. High 46°, low 35°.
Pressure29.68 inHg
Wind10.6 mph NW
Humidity67%
Visibility—
Dew point31°
Sun, 1547° / 38°0
47 °
Dedham Island, Sunday, 15 November
Overcast. High 47°, low 38°.
Pressure29.94 inHg
Wind12.1 mph NW
Humidity62%
Visibility—
Dew point33°
Mon, 1649° / 35°0
49 °
Dedham Island, Monday, 16 November
Clear. High 49°, low 35°.
Pressure30.24 inHg
Wind6.3 mph NW
Humidity60%
Visibility—
Dew point30°
Tue, 1750° / 35°0
50 °
Dedham Island, Tuesday, 17 November
Clear. High 50°, low 35°.
Pressure30.42 inHg
Wind4.4 mph NW
Humidity56%
Visibility—
Dew point28°
Wed, 1850° / 35°0
50 °
Dedham Island, Wednesday, 18 November
Clear. High 50°, low 35°.
Pressure30.42 inHg
Wind4.4 mph NW
Humidity41%
Visibility—
Dew point21°
Thu, 1954° / 36°0
54 °
Dedham Island, Thursday, 19 November
Clear. High 54°, low 36°.
Pressure30.45 inHg
Wind4 mph NW
Humidity45%
Visibility—
Dew point26°
Fri, 2057° / 39°0
57 °
Dedham Island, Friday, 20 November
Overcast. High 57°, low 39°.
Pressure30.30 inHg
Wind7.3 mph W
Humidity40%
Visibility—
Dew point26°
Sat, 2157° / 44°0
57 °
Dedham Island, Saturday, 21 November
Overcast. High 57°, low 44°.
Pressure30.24 inHg
Wind9 mph NW
Humidity63%
Visibility—
Dew point41°
Sun, 2248° / 38°0
48 °
Dedham Island, Sunday, 22 November
Clear. High 48°, low 38°.
Pressure30.18 inHg
Wind8.7 mph NW
Humidity55%
Visibility—
Dew point28°
Mon, 2349° / 33°0
49 °
Dedham Island, Monday, 23 November
Clear. High 49°, low 33°.
Pressure30.24 inHg
Wind7.5 mph NW
Humidity49%
Visibility—
Dew point24°
Tue, 2455° / 39°0.11
55 °
Dedham Island, Tuesday, 24 November
Light rain. High 55°, low 39°.
Pressure30.00 inHg
Wind13 mph SW
Humidity81%
Visibility—
Dew point44°
Wed, 2556° / 46°0
56 °
Dedham Island, Wednesday, 25 November
Overcast. High 56°, low 46°.
Pressure29.88 inHg
Wind7 mph W
Humidity75%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2647° / 34°0.17
47 °
Dedham Island, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.17 in
Chance of precipitation42%
Record high62° (1979)
Record low21° (1978)
Fri, 2747° / 34°0.11
47 °
Dedham Island, Friday, 27 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.11 in
Chance of precipitation38%
Record high62° (1979)
Record low19° (1978)
Sat, 2847° / 34°0.17
47 °
Dedham Island, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.17 in
Chance of precipitation38%
Record high65° (1990)
Record low16° (2002)
Sun, 2946° / 33°0.07
46 °
Dedham Island, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation25%
Record high64° (2011)
Record low17° (2014)
Mon, 3044° / 32°0.11
44 °
Dedham Island, Monday, 30 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.11 in
Chance of precipitation30%
Record high63° (2006)
Record low20° (2013)
Tue, 0144° / 33°0.1
44 °
Dedham Island, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.1 in
Chance of precipitation30%
Record high67° (2001)
Record low15° (1989)
Wed, 0244° / 31°0.12
44 °
Dedham Island, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.12 in
Chance of precipitation28%
Record high64° (2006)
Record low12° (1989)
Thu, 0344° / 31°0.15
44 °
Dedham Island, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.15 in
Chance of precipitation32%
Record high64° (2009)
Record low11° (1976)
Fri, 0443° / 30°0.1
43 °
Dedham Island, Friday, 4 December
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.1 in
Chance of precipitation25%
Record high65° (1982)
Record low10° (1989)
Sat, 0541° / 29°0.15
41 °
Dedham Island, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.15 in
Chance of precipitation28%
Record high63° (2001)
Record low10° (2025)
Sun, 0643° / 30°0.17
43 °
Dedham Island, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.17 in
Chance of precipitation48%
Record high68° (2001)
Record low14° (2007)
Mon, 0742° / 29°0.14
42 °
Dedham Island, Monday, 7 December
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.14 in
Chance of precipitation33%
Record high68° (1998)
Record low10° (1964)
Tue, 0839° / 27°0.09
39 °
Dedham Island, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation23%
Record high57° (2022)
Record low1° (1964)
Wed, 0941° / 27°0.19
41 °
Dedham Island, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.19 in
Chance of precipitation33%
Record high59° (1991)
Record low7° (1968)
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 Dedham Island, MA 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 Dedham Island, MA 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.