Monthly outlook for Green Harbor, MA: average high 55.3°, average low 44.4°. That is 0.2° above the climate normal for October. Precipitation is expected on 2 days (about 2.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (67.2°), the coolest 28 October (32.1°).
55.3°/44.4°
Average high / low
+0.2°
Above normal
2 / 5
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
58.4°
56.1°
+1.3°
7 November – 16 November
50°
51.7°
-0.9°
17 November – 26 November
at normal
48.1°
—
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).
Thu, 2967° / 39°0
67 °
Green Harbor, Thursday, 29 October
Clear. High 67°, low 39°.
Pressure30.21 inHg
Wind13.1 mph SW
Humidity63%
Visibility6.2 mi
Dew point49°
Fri, 3067° / 47°0.02
67 °
Green Harbor, Friday, 30 October
Light rain. High 67°, low 47°.
Pressure29.97 inHg
Wind7.5 mph W
Humidity64%
Visibility6.2 mi
Dew point53°
Sat, 3151° / 44°0
51 °
Green Harbor, Saturday, 31 October
Clear. High 51°, low 44°.
Pressure30.33 inHg
Wind11.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point32°
Sun, 0154° / 39°0
54 °
Green Harbor, Sunday, 1 November
Clear. High 54°, low 39°.
Pressure30.42 inHg
Wind2.3 mph SW
Humidity47%
Visibility6.2 mi
Dew point31°
Mon, 0260° / 42°0
60 °
Green Harbor, Monday, 2 November
Clear. High 60°, low 42°.
Pressure30.33 inHg
Wind7.8 mph SW
Humidity57%
Visibility—
Dew point39°
Tue, 0354° / 49°0
54 °
Green Harbor, Tuesday, 3 November
Overcast. High 54°, low 49°.
Pressure30.27 inHg
Wind18.9 mph NE
Humidity89%
Visibility—
Dew point50°
Wed, 0451° / 48°0
51 °
Green Harbor, Wednesday, 4 November
Partly cloudy. High 51°, low 48°.
Pressure30.45 inHg
Wind16.4 mph E
Humidity59%
Visibility—
Dew point36°
Thu, 0561° / 51°0
61 °
Green Harbor, Thursday, 5 November
Overcast. High 61°, low 51°.
Pressure30.21 inHg
Wind19.4 mph S
Humidity84%
Visibility—
Dew point51°
Fri, 0665° / 59°0.59
65 °
Green Harbor, Friday, 6 November
Rain. High 65°, low 59°.
Pressure29.47 inHg
Wind28.2 mph S
Humidity92%
Visibility—
Dew point62°
Sat, 0752° / 44°0
52 °
Green Harbor, Saturday, 7 November
Clear. High 52°, low 44°.
Pressure29.97 inHg
Wind20 mph NW
Humidity53%
Visibility—
Dew point31°
Sun, 0845° / 43°0
45 °
Green Harbor, Sunday, 8 November
Overcast. High 45°, low 43°.
Pressure30.30 inHg
Wind10.5 mph NE
Humidity64%
Visibility—
Dew point34°
Mon, 0947° / 41°0
47 °
Green Harbor, Monday, 9 November
Clear. High 47°, low 41°.
Pressure30.42 inHg
Wind9 mph N
Humidity65%
Visibility—
Dew point34°
Tue, 1049° / 40°0
49 °
Green Harbor, Tuesday, 10 November
Clear. High 49°, low 40°.
Pressure30.36 inHg
Wind8.9 mph SW
Humidity50%
Visibility—
Dew point27°
Wed, 1155° / 42°0
55 °
Green Harbor, Wednesday, 11 November
Overcast. High 55°, low 42°.
Pressure30.24 inHg
Wind9 mph S
Humidity65%
Visibility—
Dew point38°
Thu, 1252° / 49°1.63
52 °
Green Harbor, Thursday, 12 November
Heavy rain. High 52°, low 49°.
Pressure30.12 inHg
Wind41.1 mph E
Humidity81%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Thu, 2649° / 36°0.17
49 °
Green Harbor, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.17 in
Chance of precipitation43%
Record high64° (1979)
Record low22° (1978)
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.