Monthly outlook for Harpswell, ME: average high 53°, average low 42.7°. That is 1.2° below the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 14 October (62.1°), the coolest 18 October (33.5°).
53°/42.7°
Average high / low
−1.2°
Below normal
4 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
56.4°
56.1°
+0.2°
24 October – 2 November
47.4°
52.8°
-3°
3 November – 12 November
at normal
49.4°
—
October records over 66 years
81.1°3 October 2023All-time high
28.9°31 October 2020All-time low
Thu, 1556° / 46°0
56 °
Harpswell, Thursday, 15 October
Clear. High 56°, low 46°.
Pressure30.15 inHg
Wind9.8 mph NW
Humidity43%
Visibility6.2 mi
Dew point33°
Fri, 1660° / 44°0.49
60 °
Harpswell, Friday, 16 October
Rain. High 60°, low 44°.
Pressure29.85 inHg
Wind14.6 mph S
Humidity82%
Visibility6.2 mi
Dew point46°
Sat, 1760° / 38°0
60 °
Harpswell, Saturday, 17 October
Overcast. High 60°, low 38°.
Pressure29.91 inHg
Wind14.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point28°
Sun, 1850° / 33°0
50 °
Harpswell, Sunday, 18 October
Clear. High 50°, low 33°.
Pressure30.53 inHg
Wind12 mph SW
Humidity54%
Visibility—
Dew point27°
Mon, 1958° / 40°0
58 °
Harpswell, Monday, 19 October
Clear. High 58°, low 40°.
Pressure30.50 inHg
Wind12.7 mph SW
Humidity57%
Visibility—
Dew point37°
Tue, 2061° / 51°0
61 °
Harpswell, Tuesday, 20 October
Overcast. High 61°, low 51°.
Pressure30.21 inHg
Wind15.8 mph SW
Humidity68%
Visibility—
Dew point46°
Wed, 2154° / 48°0
54 °
Harpswell, Wednesday, 21 October
Overcast. High 54°, low 48°.
Pressure30.21 inHg
Wind9.1 mph S
Humidity60%
Visibility—
Dew point38°
Thu, 2257° / 47°0.06
57 °
Harpswell, Thursday, 22 October
Light rain. High 57°, low 47°.
Pressure29.94 inHg
Wind21.5 mph S
Humidity89%
Visibility—
Dew point51°
Fri, 2346° / 42°0
46 °
Harpswell, Friday, 23 October
Partly cloudy. High 46°, low 42°.
Pressure29.77 inHg
Wind20 mph NW
Humidity65%
Visibility—
Dew point35°
Sat, 2445° / 41°0.74
45 °
Harpswell, Saturday, 24 October
Rain. High 45°, low 41°.
Pressure29.44 inHg
Wind23.1 mph NW
Humidity83%
Visibility—
Dew point40°
Sun, 2550° / 43°0.01
50 °
Harpswell, Sunday, 25 October
Light rain. High 50°, low 43°.
Pressure29.62 inHg
Wind23.6 mph NW
Humidity66%
Visibility—
Dew point36°
Mon, 2649° / 43°0.06
49 °
Harpswell, Monday, 26 October
Light rain. High 49°, low 43°.
Pressure29.62 inHg
Wind22.5 mph W
Humidity73%
Visibility—
Dew point40°
Tue, 2749° / 42°0
49 °
Harpswell, Tuesday, 27 October
Mostly clear. High 49°, low 42°.
Pressure29.74 inHg
Wind18.6 mph W
Humidity59%
Visibility—
Dew point33°
Wed, 2845° / 38°0
45 °
Harpswell, Wednesday, 28 October
Partly cloudy. High 45°, low 38°.
Pressure29.71 inHg
Wind11.1 mph NW
Humidity68%
Visibility—
Dew point32°
Thu, 2947° / 39°0
47 °
Harpswell, Thursday, 29 October
Mostly clear. High 47°, low 39°.
Pressure29.71 inHg
Wind14.5 mph NW
Humidity56%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3051° / 40°0.14
51 °
Harpswell, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.14 in
Chance of precipitation27%
Record high64° (1994)
Record low31° (1962)
Sat, 3152° / 41°0.11
52 °
Harpswell, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.11 in
Chance of precipitation23%
Record high74° (2024)
Record low29° (2020)
Sun, 0153° / 42°0.11
53 °
Harpswell, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.11 in
Chance of precipitation30%
Record high74° (2024)
Record low31° (1992)
Mon, 0252° / 42°0.17
52 °
Harpswell, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.17 in
Chance of precipitation28%
Record high63° (1971)
Record low26° (2002)
Tue, 0351° / 41°0.22
51 °
Harpswell, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.22 in
Chance of precipitation40%
Record high64° (1990)
Record low25° (2002)
Wed, 0451° / 41°0.06
51 °
Harpswell, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1990)
Record low28° (2020)
Thu, 0551° / 41°0.17
51 °
Harpswell, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.17 in
Chance of precipitation37%
Record high67° (1994)
Record low27° (1965)
Fri, 0650° / 41°0.14
50 °
Harpswell, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.14 in
Chance of precipitation33%
Record high75° (2024)
Record low30° (1987)
Sat, 0750° / 40°0.05
50 °
Harpswell, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high70° (2022)
Record low23° (2002)
Sun, 0849° / 38°0.08
49 °
Harpswell, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.08 in
Chance of precipitation22%
Record high60° (2025)
Record low23° (2002)
Mon, 0948° / 38°0.11
48 °
Harpswell, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.11 in
Chance of precipitation30%
Record high61° (1975)
Record low24° (1971)
Tue, 1048° / 38°0.13
48 °
Harpswell, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.13 in
Chance of precipitation32%
Record high62° (2020)
Record low24° (2017)
Wed, 1148° / 38°0.12
48 °
Harpswell, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.12 in
Chance of precipitation45%
Record high63° (2020)
Record low23° (2017)
Thu, 1247° / 37°0.12
47 °
Harpswell, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.12 in
Chance of precipitation32%
Record high69° (2022)
Record low24° (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 Harpswell, 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 Harpswell, 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.