Monthly outlook for Harborside, ME: average high 54.3°, average low 41.8°. That is 0.5° above the climate normal for October. Precipitation is expected on 5 days (about 3.3 inches), against a normal of 5 days and 2.5 inches. The warmest day looks like 12 October (66°), the coolest 20 October (31.5°).
54.3°/41.8°
Average high / low
+0.5°
Above normal
5 / 5
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
55.7°
54.1°
+0.9°
20 October – 29 October
52°
51.7°
+0.2°
30 October – 8 November
at normal
49.3°
—
October records over 66 years
71.2°9 October 2011All-time high
30.4°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Stonington (15 mi).
Sun, 1159° / 43°0
59 °
Harborside, Sunday, 11 October
Overcast. High 59°, low 43°.
Pressure30.36 inHg
Wind9 mph S
Humidity66%
Visibility6.2 mi
Dew point45°
Mon, 1266° / 50°0
66 °
Harborside, Monday, 12 October
Clear. High 66°, low 50°.
Pressure29.74 inHg
Wind2.8 mph SW
Humidity64%
Visibility6.2 mi
Dew point50°
Tue, 1353° / 46°1.09
53 °
Harborside, Tuesday, 13 October
Rain. High 53°, low 46°.
Pressure30.06 inHg
Wind5.3 mph E
Humidity88%
Visibility2.7 mi
Dew point43°
Wed, 1456° / 52°1.36
56 °
Harborside, Wednesday, 14 October
Heavy rain. High 56°, low 52°.
Pressure29.77 inHg
Wind10 mph N
Humidity85%
Visibility6.2 mi
Dew point49°
Thu, 1555° / 44°0
55 °
Harborside, Thursday, 15 October
Mostly clear. High 55°, low 44°.
Pressure29.94 inHg
Wind15.5 mph NW
Humidity57%
Visibility—
Dew point38°
Fri, 1653° / 40°0.23
53 °
Harborside, Friday, 16 October
Rain. High 53°, low 40°.
Pressure30.12 inHg
Wind17.7 mph S
Humidity59%
Visibility—
Dew point32°
Sat, 1759° / 55°0.47
59 °
Harborside, Saturday, 17 October
Rain. High 59°, low 55°.
Pressure29.80 inHg
Wind11.9 mph S
Humidity99%
Visibility—
Dew point58°
Sun, 1854° / 42°0.15
54 °
Harborside, Sunday, 18 October
Light rain. High 54°, low 42°.
Pressure29.85 inHg
Wind13.6 mph N
Humidity91%
Visibility—
Dew point47°
Mon, 1946° / 34°0
46 °
Harborside, Monday, 19 October
Clear. High 46°, low 34°.
Pressure30.33 inHg
Wind15.7 mph N
Humidity58%
Visibility—
Dew point28°
Tue, 2047° / 31°0
47 °
Harborside, Tuesday, 20 October
Clear. High 47°, low 31°.
Pressure30.50 inHg
Wind11.9 mph N
Humidity42%
Visibility—
Dew point19°
Wed, 2148° / 33°0
48 °
Harborside, Wednesday, 21 October
Clear. High 48°, low 33°.
Pressure30.56 inHg
Wind6 mph S
Humidity42%
Visibility—
Dew point22°
Thu, 2252° / 36°0
52 °
Harborside, Thursday, 22 October
Clear. High 52°, low 36°.
Pressure30.65 inHg
Wind4.9 mph N
Humidity46%
Visibility—
Dew point27°
Fri, 2354° / 37°0
54 °
Harborside, Friday, 23 October
Clear. High 54°, low 37°.
Pressure30.47 inHg
Wind9.5 mph N
Humidity57%
Visibility—
Dew point32°
Sat, 2455° / 39°0
55 °
Harborside, Saturday, 24 October
Overcast. High 55°, low 39°.
Pressure30.30 inHg
Wind13.9 mph N
Humidity57%
Visibility—
Dew point33°
Sun, 2557° / 40°0
57 °
Harborside, Sunday, 25 October
Clear. High 57°, low 40°.
Pressure30.30 inHg
Wind9.8 mph N
Humidity58%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2651° / 45°0.2
51 °
Harborside, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low45°
Average precipitation0.2 in
Chance of precipitation32%
Record high64° (2023)
Record low35° (1997)
Tue, 2751° / 44°0.15
51 °
Harborside, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.15 in
Chance of precipitation35%
Record high64° (1963)
Record low31° (1976)
Wed, 2851° / 43°0.19
51 °
Harborside, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.19 in
Chance of precipitation40%
Record high63° (2023)
Record low32° (1976)
Thu, 2951° / 42°0.14
51 °
Harborside, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.14 in
Chance of precipitation32%
Record high62° (1971)
Record low30° (1965)
Fri, 3049° / 42°0.17
49 °
Harborside, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.17 in
Chance of precipitation30%
Record high62° (2017)
Record low32° (2002)
Sat, 3149° / 42°0.13
49 °
Harborside, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.13 in
Chance of precipitation25%
Record high60° (2024)
Record low32° (1972)
Sun, 0151° / 44°0.13
51 °
Harborside, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.13 in
Chance of precipitation35%
Record high63° (2024)
Record low31° (1992)
Mon, 0250° / 43°0.19
50 °
Harborside, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.19 in
Chance of precipitation35%
Record high59° (1971)
Record low26° (2002)
Tue, 0350° / 42°0.27
50 °
Harborside, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.27 in
Chance of precipitation45%
Record high60° (1990)
Record low26° (2002)
Wed, 0449° / 42°0.1
49 °
Harborside, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.1 in
Chance of precipitation35%
Record high60° (1990)
Record low29° (2002)
Thu, 0549° / 42°0.18
49 °
Harborside, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.18 in
Chance of precipitation37%
Record high61° (2022)
Record low27° (1965)
Fri, 0649° / 42°0.18
49 °
Harborside, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.18 in
Chance of precipitation47%
Record high62° (2022)
Record low31° (1987)
Sat, 0749° / 41°0.07
49 °
Harborside, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.07 in
Chance of precipitation35%
Record high62° (2022)
Record low22° (2002)
Sun, 0847° / 40°0.13
47 °
Harborside, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.13 in
Chance of precipitation25%
Record high57° (1975)
Record low21° (2002)
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 Harborside, ME 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 Harborside, ME 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.