Monthly outlook for Green Harbor, MA: average high 56.8°, average low 45.2°. That is 0.9° above the climate normal for October. Precipitation is expected on 5 days (about 2.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (69°), the coolest 28 October (27.8°).
56.8°/45.2°
Average high / low
+0.9°
Above normal
5 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
58.3°
56.4°
+1.1°
6 November – 15 November
54.3°
52.1°
+1.2°
16 November – 25 November
at normal
48.2°
—
October records over 66 years
82.6°5 October 2025All-time high
25.3°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Halifax (12 mi).
Wed, 2858° / 28°0
58 °
Green Harbor, Wednesday, 28 October
Partly cloudy. High 58°, low 28°.
Pressure30.47 inHg
Wind0.6 mph NE
Humidity58%
Visibility6.2 mi
Dew point38°
Thu, 2963° / 46°0
63 °
Green Harbor, Thursday, 29 October
Clear. High 63°, low 46°.
Pressure30.21 inHg
Wind11.8 mph SW
Humidity66%
Visibility6.2 mi
Dew point50°
Fri, 3069° / 53°0
69 °
Green Harbor, Friday, 30 October
Overcast. High 69°, low 53°.
Pressure30.00 inHg
Wind9.1 mph W
Humidity64%
Visibility6.2 mi
Dew point53°
Sat, 3156° / 47°0
56 °
Green Harbor, Saturday, 31 October
Overcast. High 56°, low 47°.
Pressure30.33 inHg
Wind11.6 mph NW
Humidity51%
Visibility—
Dew point35°
Sun, 0160° / 45°0
60 °
Green Harbor, Sunday, 1 November
Overcast. High 60°, low 45°.
Pressure30.42 inHg
Wind13.4 mph SW
Humidity69%
Visibility—
Dew point45°
Mon, 0256° / 52°0.67
56 °
Green Harbor, Monday, 2 November
Rain. High 56°, low 52°.
Pressure30.12 inHg
Wind10.6 mph S
Humidity86%
Visibility—
Dew point51°
Tue, 0356° / 46°0.56
56 °
Green Harbor, Tuesday, 3 November
Rain. High 56°, low 46°.
Pressure30.21 inHg
Wind31 mph NE
Humidity64%
Visibility—
Dew point37°
Wed, 0450° / 48°0
50 °
Green Harbor, Wednesday, 4 November
Clear. High 50°, low 48°.
Pressure30.45 inHg
Wind18.8 mph E
Humidity60%
Visibility—
Dew point36°
Thu, 0560° / 51°0.21
60 °
Green Harbor, Thursday, 5 November
Rain. High 60°, low 51°.
Pressure30.09 inHg
Wind24.5 mph SE
Humidity83%
Visibility—
Dew point50°
Fri, 0663° / 52°0.62
63 °
Green Harbor, Friday, 6 November
Rain. High 63°, low 52°.
Pressure29.62 inHg
Wind16.4 mph S
Humidity96%
Visibility—
Dew point60°
Sat, 0751° / 44°0
51 °
Green Harbor, Saturday, 7 November
Clear. High 51°, low 44°.
Pressure29.74 inHg
Wind15.5 mph SW
Humidity47%
Visibility—
Dew point28°
Sun, 0848° / 39°0
48 °
Green Harbor, Sunday, 8 November
Clear. High 48°, low 39°.
Pressure29.88 inHg
Wind15.5 mph W
Humidity62%
Visibility—
Dew point33°
Mon, 0946° / 38°0
46 °
Green Harbor, Monday, 9 November
Clear. High 46°, low 38°.
Pressure30.06 inHg
Wind15.9 mph NW
Humidity54%
Visibility—
Dew point26°
Tue, 1059° / 43°0
59 °
Green Harbor, Tuesday, 10 November
Light rain. High 59°, low 43°.
Pressure30.00 inHg
Wind19.7 mph S
Humidity70%
Visibility—
Dew point44°
Wed, 1159° / 57°0.29
59 °
Green Harbor, Wednesday, 11 November
Rain. High 59°, low 57°.
Pressure29.91 inHg
Wind16.6 mph S
Humidity95%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1251° / 39°0.15
51 °
Green Harbor, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.15 in
Chance of precipitation35%
Record high73° (2022)
Record low25° (2017)
Fri, 1350° / 38°0.2
50 °
Green Harbor, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.2 in
Chance of precipitation45%
Record high67° (1964)
Record low19° (2019)
Sat, 1449° / 38°0.13
49 °
Green Harbor, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.13 in
Chance of precipitation27%
Record high66° (1993)
Record low19° (2019)
Sun, 1551° / 38°0.12
51 °
Green Harbor, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.12 in
Chance of precipitation37%
Record high72° (1993)
Record low22° (2018)
Mon, 1650° / 38°0.17
50 °
Green Harbor, Monday, 16 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.17 in
Chance of precipitation30%
Record high68° (2001)
Record low22° (1967)
Tue, 1749° / 37°0.15
49 °
Green Harbor, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.15 in
Chance of precipitation28%
Record high65° (2006)
Record low24° (1967)
Wed, 1850° / 37°0.08
50 °
Green Harbor, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.08 in
Chance of precipitation22%
Record high67° (1987)
Record low25° (2020)
Thu, 1949° / 36°0.06
49 °
Green Harbor, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation20%
Record high61° (1991)
Record low22° (2020)
Fri, 2049° / 36°0.11
49 °
Green Harbor, Friday, 20 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation32%
Record high67° (1985)
Record low22° (1986)
Sat, 2148° / 35°0.09
48 °
Green Harbor, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation28%
Record high62° (1975)
Record low20° (1987)
Sun, 2247° / 36°0.21
47 °
Green Harbor, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.21 in
Chance of precipitation38%
Record high62° (2007)
Record low11° (2018)
Mon, 2347° / 34°0.17
47 °
Green Harbor, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.17 in
Chance of precipitation25%
Record high65° (1979)
Record low13° (2018)
Tue, 2447° / 35°0.11
47 °
Green Harbor, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation37%
Record high66° (1979)
Record low9° (1989)
Wed, 2547° / 35°0.17
47 °
Green Harbor, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.17 in
Chance of precipitation28%
Record high68° (1979)
Record low19° (1989)
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 Green Harbor, 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 Green Harbor, 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.