Monthly outlook for Prospect Harbor, ME: average high 53.5°, average low 40.2°. That is 1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 26 October (62.8°), the coolest 24 October (32.9°).
53.5°/40.2°
Average high / low
+1°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
54.6°
52.5°
+1.2°
31 October – 9 November
51.7°
49.7°
+1.1°
10 November – 19 November
at normal
45.2°
—
October records over 66 years
81°3 October 2023All-time high
29.7°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Winter Harbor (3 mi).
Thu, 2258° / 39°0
58 °
Prospect Harbor, Thursday, 22 October
Overcast. High 58°, low 39°.
Pressure29.91 inHg
Wind10.5 mph N
Humidity51%
Visibility6.2 mi
Dew point37°
Fri, 2350° / 37°0
50 °
Prospect Harbor, Friday, 23 October
Mostly clear. High 50°, low 37°.
Pressure30.30 inHg
Wind13.2 mph N
Humidity53%
Visibility6.2 mi
Dew point27°
Sat, 2452° / 33°0
52 °
Prospect Harbor, Saturday, 24 October
Clear. High 52°, low 33°.
Pressure30.47 inHg
Wind6.3 mph NW
Humidity50%
Visibility6.2 mi
Dew point31°
Sun, 2558° / 38°0
58 °
Prospect Harbor, Sunday, 25 October
Clear. High 58°, low 38°.
Pressure30.50 inHg
Wind8.4 mph SW
Humidity46%
Visibility—
Dew point33°
Mon, 2663° / 39°0
63 °
Prospect Harbor, Monday, 26 October
Clear. High 63°, low 39°.
Pressure30.30 inHg
Wind5.6 mph W
Humidity48%
Visibility—
Dew point35°
Tue, 2747° / 37°0
47 °
Prospect Harbor, Tuesday, 27 October
Clear. High 47°, low 37°.
Pressure30.39 inHg
Wind12.4 mph N
Humidity43%
Visibility—
Dew point20°
Wed, 2849° / 35°0
49 °
Prospect Harbor, Wednesday, 28 October
Clear. High 49°, low 35°.
Pressure30.50 inHg
Wind17.5 mph SW
Humidity49%
Visibility—
Dew point26°
Thu, 2956° / 50°0.03
56 °
Prospect Harbor, Thursday, 29 October
Light rain. High 56°, low 50°.
Pressure30.15 inHg
Wind23.4 mph SW
Humidity79%
Visibility—
Dew point48°
Fri, 3055° / 41°0
55 °
Prospect Harbor, Friday, 30 October
Overcast. High 55°, low 41°.
Pressure30.24 inHg
Wind16.4 mph NW
Humidity45%
Visibility—
Dew point27°
Sat, 3149° / 37°0
49 °
Prospect Harbor, Saturday, 31 October
Clear. High 49°, low 37°.
Pressure30.53 inHg
Wind10.6 mph N
Humidity48%
Visibility—
Dew point26°
Sun, 0147° / 35°0
47 °
Prospect Harbor, Sunday, 1 November
Overcast. High 47°, low 35°.
Pressure30.77 inHg
Wind12.9 mph SW
Humidity56%
Visibility—
Dew point28°
Mon, 0255° / 47°0
55 °
Prospect Harbor, Monday, 2 November
Overcast. High 55°, low 47°.
Pressure30.47 inHg
Wind13.8 mph SW
Humidity77%
Visibility—
Dew point46°
Tue, 0359° / 49°0
59 °
Prospect Harbor, Tuesday, 3 November
Overcast. High 59°, low 49°.
Pressure30.36 inHg
Wind14.1 mph E
Humidity76%
Visibility—
Dew point48°
Wed, 0450° / 43°0
50 °
Prospect Harbor, Wednesday, 4 November
Overcast. High 50°, low 43°.
Pressure30.42 inHg
Wind13.6 mph E
Humidity71%
Visibility—
Dew point40°
Thu, 0551° / 43°0
51 °
Prospect Harbor, Thursday, 5 November
Clear. High 51°, low 43°.
Pressure30.27 inHg
Wind7 mph SE
Humidity70%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0649° / 41°0.18
49 °
Prospect Harbor, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.18 in
Chance of precipitation45%
Record high68° (2024)
Record low30° (1987)
Sat, 0749° / 40°0.08
49 °
Prospect Harbor, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.08 in
Chance of precipitation30%
Record high65° (2022)
Record low20° (2002)
Sun, 0848° / 38°0.12
48 °
Prospect Harbor, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.12 in
Chance of precipitation22%
Record high60° (2025)
Record low19° (2002)
Mon, 0947° / 38°0.11
47 °
Prospect Harbor, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.11 in
Chance of precipitation23%
Record high61° (1975)
Record low25° (1971)
Tue, 1048° / 38°0.15
48 °
Prospect Harbor, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.15 in
Chance of precipitation42%
Record high59° (2020)
Record low25° (1965)
Wed, 1147° / 38°0.14
47 °
Prospect Harbor, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.14 in
Chance of precipitation43%
Record high60° (2022)
Record low25° (2017)
Thu, 1246° / 37°0.12
46 °
Prospect Harbor, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.12 in
Chance of precipitation35%
Record high63° (2022)
Record low26° (1976)
Fri, 1345° / 36°0.18
45 °
Prospect Harbor, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.18 in
Chance of precipitation37%
Record high58° (1982)
Record low19° (2019)
Sat, 1445° / 35°0.13
45 °
Prospect Harbor, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.13 in
Chance of precipitation40%
Record high57° (2005)
Record low15° (1986)
Sun, 1545° / 36°0.17
45 °
Prospect Harbor, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.17 in
Chance of precipitation43%
Record high60° (1994)
Record low19° (2018)
Mon, 1644° / 35°0.17
44 °
Prospect Harbor, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.17 in
Chance of precipitation38%
Record high59° (1989)
Record low19° (2019)
Tue, 1744° / 34°0.13
44 °
Prospect Harbor, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.13 in
Chance of precipitation28%
Record high60° (2006)
Record low22° (2019)
Wed, 1844° / 34°0.1
44 °
Prospect Harbor, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.1 in
Chance of precipitation35%
Record high57° (2021)
Record low26° (1997)
Thu, 1943° / 33°0.08
43 °
Prospect Harbor, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.08 in
Chance of precipitation22%
Record high56° (2021)
Record low21° (1986)
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 Prospect Harbor, 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 Prospect Harbor, 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.