Monthly outlook for Castle Harmony, ME: average high 52.5°, average low 34.6°. That is 0.2° below the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 20 October (63°), the coolest 18 October (28.4°).
52.5°/34.6°
Average high / low
−0.2°
Below normal
4 / 5
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
54.8°
54.1°
+0.4°
26 October – 4 November
48.6°
50.3°
-0.9°
5 November – 14 November
at normal
45.7°
—
October records over 66 years
83.3°6 October 2025All-time high
21.9°30 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Canaan (11 mi).
Sat, 1748° / 33°0
48 °
Castle Harmony, Saturday, 17 October
Clear. High 48°, low 33°.
Pressure30.00 inHg
Wind13.2 mph NW
Humidity56%
Visibility6.2 mi
Dew point24°
Sun, 1853° / 28°0
53 °
Castle Harmony, Sunday, 18 October
Clear. High 53°, low 28°.
Pressure30.50 inHg
Wind6.1 mph W
Humidity48%
Visibility6.2 mi
Dew point24°
Mon, 1958° / 35°0
58 °
Castle Harmony, Monday, 19 October
Clear. High 58°, low 35°.
Pressure30.45 inHg
Wind7.1 mph S
Humidity50%
Visibility6.2 mi
Dew point36°
Tue, 2063° / 40°0
63 °
Castle Harmony, Tuesday, 20 October
Clear. High 63°, low 40°.
Pressure30.30 inHg
Wind7 mph N
Humidity42%
Visibility6.2 mi
Dew point37°
Wed, 2154° / 36°0
54 °
Castle Harmony, Wednesday, 21 October
Clear. High 54°, low 36°.
Pressure30.45 inHg
Wind6.8 mph N
Humidity50%
Visibility—
Dew point30°
Thu, 2253° / 35°0
53 °
Castle Harmony, Thursday, 22 October
Clear. High 53°, low 35°.
Pressure30.36 inHg
Wind4.7 mph S
Humidity58%
Visibility—
Dew point33°
Fri, 2359° / 35°0
59 °
Castle Harmony, Friday, 23 October
Clear. High 59°, low 35°.
Pressure30.15 inHg
Wind5.5 mph N
Humidity53%
Visibility—
Dew point33°
Sat, 2450° / 35°0
50 °
Castle Harmony, Saturday, 24 October
Clear. High 50°, low 35°.
Pressure30.47 inHg
Wind12.2 mph NE
Humidity52%
Visibility—
Dew point29°
Sun, 2556° / 30°0
56 °
Castle Harmony, Sunday, 25 October
Clear. High 56°, low 30°.
Pressure30.47 inHg
Wind5.5 mph N
Humidity36%
Visibility—
Dew point20°
Mon, 2662° / 35°0
62 °
Castle Harmony, Monday, 26 October
Clear. High 62°, low 35°.
Pressure30.18 inHg
Wind3.4 mph SW
Humidity33%
Visibility—
Dew point24°
Tue, 2754° / 39°0.26
54 °
Castle Harmony, Tuesday, 27 October
Rain. High 54°, low 39°.
Pressure29.77 inHg
Wind13.4 mph W
Humidity46%
Visibility—
Dew point31°
Wed, 2846° / 36°0
46 °
Castle Harmony, Wednesday, 28 October
Mostly clear. High 46°, low 36°.
Pressure29.85 inHg
Wind15 mph NW
Humidity54%
Visibility—
Dew point27°
Thu, 2947° / 31°0
47 °
Castle Harmony, Thursday, 29 October
Clear. High 47°, low 31°.
Pressure30.06 inHg
Wind11.8 mph NW
Humidity40%
Visibility—
Dew point17°
Fri, 3042° / 30°1.06
42 °
Castle Harmony, Friday, 30 October
Snow. High 42°, low 30°.
Pressure29.77 inHg
Wind12 mph NE
Humidity98%
Visibility—
Dew point35°
Sat, 3141° / 38°0.22
41 °
Castle Harmony, Saturday, 31 October
Light rain. High 41°, low 38°.
Pressure29.62 inHg
Wind11.7 mph NW
Humidity94%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0151° / 37°0.11
51 °
Castle Harmony, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.11 in
Chance of precipitation30%
Record high70° (2024)
Record low25° (1972)
Mon, 0249° / 37°0.17
49 °
Castle Harmony, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.17 in
Chance of precipitation33%
Record high62° (2001)
Record low22° (2002)
Tue, 0349° / 37°0.21
49 °
Castle Harmony, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.21 in
Chance of precipitation43%
Record high64° (1975)
Record low20° (2002)
Wed, 0449° / 36°0.07
49 °
Castle Harmony, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.07 in
Chance of precipitation28%
Record high67° (1990)
Record low22° (2020)
Thu, 0548° / 35°0.13
48 °
Castle Harmony, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.13 in
Chance of precipitation32%
Record high70° (2022)
Record low23° (1986)
Fri, 0648° / 36°0.13
48 °
Castle Harmony, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.13 in
Chance of precipitation40%
Record high71° (2022)
Record low27° (1986)
Sat, 0748° / 35°0.05
48 °
Castle Harmony, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.05 in
Chance of precipitation30%
Record high68° (2022)
Record low15° (2002)
Sun, 0846° / 34°0.09
46 °
Castle Harmony, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.09 in
Chance of precipitation18%
Record high61° (2020)
Record low15° (2002)
Mon, 0946° / 33°0.12
46 °
Castle Harmony, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.12 in
Chance of precipitation30%
Record high66° (2020)
Record low21° (2019)
Tue, 1046° / 33°0.11
46 °
Castle Harmony, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation42%
Record high67° (2020)
Record low21° (1992)
Wed, 1145° / 33°0.11
45 °
Castle Harmony, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.11 in
Chance of precipitation40%
Record high67° (2020)
Record low21° (2017)
Thu, 1244° / 32°0.12
44 °
Castle Harmony, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.12 in
Chance of precipitation30%
Record high65° (2022)
Record low21° (2019)
Fri, 1343° / 31°0.16
43 °
Castle Harmony, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.16 in
Chance of precipitation35%
Record high58° (1982)
Record low12° (2019)
Sat, 1443° / 30°0.08
43 °
Castle Harmony, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.08 in
Chance of precipitation35%
Record high60° (2011)
Record low4° (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 Castle Harmony, 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 Castle Harmony, 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.