Monthly outlook for Chappaquiddick, MA: average high 58.2°, average low 52.6°. That is 0.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 16 October (68.2°), the coolest 18 October (44.9°).
58.2°/52.6°
Average high / low
+0.3°
Above normal
3 / 5
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
57.9°
58.6°
-0.4°
26 October – 4 November
58.8°
56°
+1.5°
5 November – 14 November
at normal
53.3°
—
October records over 66 years
76.3°5 October 2025All-time high
34.5°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Edgartown (2 mi).
Sat, 1760° / 46°0.1
60 °
Chappaquiddick, Saturday, 17 October
Light rain. High 60°, low 46°.
Pressure30.09 inHg
Wind14.7 mph N
Humidity61%
Visibility6.2 mi
Dew point37°
Sun, 1853° / 45°0
53 °
Chappaquiddick, Sunday, 18 October
Clear. High 53°, low 45°.
Pressure30.59 inHg
Wind11.9 mph NE
Humidity54%
Visibility6.2 mi
Dew point36°
Mon, 1955° / 50°0.09
55 °
Chappaquiddick, Monday, 19 October
Light rain. High 55°, low 50°.
Pressure30.42 inHg
Wind15.9 mph NE
Humidity70%
Visibility6.2 mi
Dew point45°
Tue, 2058° / 55°0
58 °
Chappaquiddick, Tuesday, 20 October
Overcast. High 58°, low 55°.
Pressure30.12 inHg
Wind18.3 mph N
Humidity80%
Visibility—
Dew point51°
Wed, 2156° / 52°0
56 °
Chappaquiddick, Wednesday, 21 October
Clear. High 56°, low 52°.
Pressure30.30 inHg
Wind21.1 mph NE
Humidity69%
Visibility—
Dew point46°
Thu, 2256° / 53°0.02
56 °
Chappaquiddick, Thursday, 22 October
Light rain. High 56°, low 53°.
Pressure30.36 inHg
Wind20.3 mph NE
Humidity73%
Visibility—
Dew point46°
Fri, 2360° / 55°0.02
60 °
Chappaquiddick, Friday, 23 October
Light rain. High 60°, low 55°.
Pressure30.00 inHg
Wind18.3 mph N
Humidity81%
Visibility—
Dew point51°
Sat, 2456° / 51°0
56 °
Chappaquiddick, Saturday, 24 October
Overcast. High 56°, low 51°.
Pressure30.27 inHg
Wind22.6 mph NE
Humidity61%
Visibility—
Dew point38°
Sun, 2556° / 53°0
56 °
Chappaquiddick, Sunday, 25 October
Overcast. High 56°, low 53°.
Pressure30.45 inHg
Wind19.7 mph NE
Humidity70%
Visibility—
Dew point44°
Mon, 2657° / 54°0
57 °
Chappaquiddick, Monday, 26 October
Overcast. High 57°, low 54°.
Pressure30.36 inHg
Wind11.1 mph E
Humidity77%
Visibility—
Dew point49°
Tue, 2758° / 54°0
58 °
Chappaquiddick, Tuesday, 27 October
Overcast. High 58°, low 54°.
Pressure30.27 inHg
Wind14.9 mph NE
Humidity70%
Visibility—
Dew point46°
Wed, 2856° / 53°0
56 °
Chappaquiddick, Wednesday, 28 October
Overcast. High 56°, low 53°.
Pressure30.30 inHg
Wind10 mph SW
Humidity74%
Visibility—
Dew point46°
Thu, 2961° / 56°0
61 °
Chappaquiddick, Thursday, 29 October
Overcast. High 61°, low 56°.
Pressure30.18 inHg
Wind13.4 mph W
Humidity85%
Visibility—
Dew point52°
Fri, 3060° / 57°0
60 °
Chappaquiddick, Friday, 30 October
Clear. High 60°, low 57°.
Pressure30.24 inHg
Wind16 mph SW
Humidity71%
Visibility—
Dew point48°
Sat, 3160° / 55°0.07
60 °
Chappaquiddick, Saturday, 31 October
Light rain. High 60°, low 55°.
Pressure30.03 inHg
Wind24.5 mph NE
Humidity89%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0157° / 50°0.14
57 °
Chappaquiddick, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low50°
Average precipitation0.14 in
Chance of precipitation33%
Record high69° (2019)
Record low39° (2010)
Mon, 0256° / 49°0.14
56 °
Chappaquiddick, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.14 in
Chance of precipitation30%
Record high66° (2017)
Record low33° (1965)
Tue, 0356° / 48°0.22
56 °
Chappaquiddick, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.22 in
Chance of precipitation37%
Record high66° (2017)
Record low37° (2002)
Wed, 0455° / 48°0.05
55 °
Chappaquiddick, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.05 in
Chance of precipitation23%
Record high66° (2022)
Record low35° (2020)
Thu, 0555° / 48°0.17
55 °
Chappaquiddick, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.17 in
Chance of precipitation38%
Record high69° (2022)
Record low35° (1965)
Fri, 0655° / 48°0.15
55 °
Chappaquiddick, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.15 in
Chance of precipitation43%
Record high70° (2022)
Record low37° (2012)
Sat, 0755° / 47°0.08
55 °
Chappaquiddick, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (2024)
Record low35° (1962)
Sun, 0854° / 45°0.15
54 °
Chappaquiddick, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.15 in
Chance of precipitation28%
Record high68° (2020)
Record low32° (2019)
Mon, 0953° / 46°0.11
53 °
Chappaquiddick, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high65° (2020)
Record low30° (2019)
Tue, 1054° / 46°0.21
54 °
Chappaquiddick, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.21 in
Chance of precipitation43%
Record high64° (2020)
Record low29° (2017)
Wed, 1153° / 46°0.13
53 °
Chappaquiddick, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low46°
Average precipitation0.13 in
Chance of precipitation40%
Record high68° (2022)
Record low27° (2017)
Thu, 1252° / 44°0.18
52 °
Chappaquiddick, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.18 in
Chance of precipitation35%
Record high69° (2022)
Record low30° (2017)
Fri, 1351° / 43°0.23
51 °
Chappaquiddick, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.23 in
Chance of precipitation45%
Record high62° (1975)
Record low23° (2019)
Sat, 1451° / 44°0.12
51 °
Chappaquiddick, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.12 in
Chance of precipitation25%
Record high60° (2009)
Record low25° (2019)
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 Chappaquiddick, 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 Chappaquiddick, 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.