Monthly outlook for Harborside, ME: average high 52.5°, average low 43.3°. That is 0.2° below the climate normal for October. Precipitation is expected on 8 days (about 4.6 inches), against a normal of 5 days and 2.6 inches. The warmest day looks like 12 October (68.5°), the coolest 18 October (33.5°).
52.5°/43.3°
Average high / low
−0.2°
Below normal
8 / 5
Wet days / normal
4.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
54.3°
53.7°
+0.3°
22 October – 31 October
49.7°
51°
-0.7°
1 November – 10 November
at normal
48.9°
—
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).
Tue, 1348° / 43°0.65
48 °
Harborside, Tuesday, 13 October
Rain. High 48°, low 43°.
Pressure30.12 inHg
Wind5 mph NE
Humidity73%
Visibility6.2 mi
Dew point38°
Wed, 1455° / 49°0.64
55 °
Harborside, Wednesday, 14 October
Heavy rain. High 55°, low 49°.
Pressure29.83 inHg
Wind9.5 mph N
Humidity83%
Visibility6.2 mi
Dew point49°
Thu, 1556° / 45°0
56 °
Harborside, Thursday, 15 October
Clear. High 56°, low 45°.
Pressure30.09 inHg
Wind10.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point35°
Fri, 1651° / 44°0.57
51 °
Harborside, Friday, 16 October
Rain. High 51°, low 44°.
Pressure29.80 inHg
Wind12.8 mph SE
Humidity83%
Visibility—
Dew point45°
Sat, 1745° / 35°0.04
45 °
Harborside, Saturday, 17 October
Light rain. High 45°, low 35°.
Pressure29.74 inHg
Wind23.4 mph NW
Humidity60%
Visibility—
Dew point30°
Sun, 1848° / 33°0
48 °
Harborside, Sunday, 18 October
Clear. High 48°, low 33°.
Pressure30.53 inHg
Wind22.2 mph NW
Humidity46%
Visibility—
Dew point21°
Mon, 1957° / 43°0
57 °
Harborside, Monday, 19 October
Clear. High 57°, low 43°.
Pressure30.30 inHg
Wind14.4 mph SW
Humidity46%
Visibility—
Dew point31°
Tue, 2061° / 46°0
61 °
Harborside, Tuesday, 20 October
Clear. High 61°, low 46°.
Pressure30.24 inHg
Wind8.7 mph NW
Humidity60%
Visibility—
Dew point42°
Wed, 2152° / 41°0
52 °
Harborside, Wednesday, 21 October
Partly cloudy. High 52°, low 41°.
Pressure30.50 inHg
Wind8.1 mph NE
Humidity56%
Visibility—
Dew point33°
Thu, 2249° / 41°0
49 °
Harborside, Thursday, 22 October
Overcast. High 49°, low 41°.
Pressure30.47 inHg
Wind10.8 mph S
Humidity72%
Visibility—
Dew point38°
Fri, 2352° / 48°0
52 °
Harborside, Friday, 23 October
Overcast. High 52°, low 48°.
Pressure30.18 inHg
Wind20.9 mph SE
Humidity72%
Visibility—
Dew point43°
Sat, 2453° / 51°2.08
53 °
Harborside, Saturday, 24 October
Heavy rain. High 53°, low 51°.
Pressure29.50 inHg
Wind33.2 mph E
Humidity94%
Visibility—
Dew point50°
Sun, 2554° / 45°0.24
54 °
Harborside, Sunday, 25 October
Rain. High 54°, low 45°.
Pressure29.41 inHg
Wind17.6 mph N
Humidity89%
Visibility—
Dew point50°
Mon, 2643° / 39°0.24
43 °
Harborside, Monday, 26 October
Light rain. High 43°, low 39°.
Pressure29.50 inHg
Wind16.7 mph NW
Humidity94%
Visibility—
Dew point39°
Tue, 2747° / 43°0
47 °
Harborside, Tuesday, 27 October
Overcast. High 47°, low 43°.
Pressure29.59 inHg
Wind13.6 mph NW
Humidity71%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0947° / 40°0.15
47 °
Harborside, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.15 in
Chance of precipitation30%
Record high57° (1975)
Record low26° (1971)
Tue, 1047° / 40°0.16
47 °
Harborside, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.16 in
Chance of precipitation45%
Record high58° (2022)
Record low26° (1965)
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.