Monthly outlook for Castine, ME: average high 47.7°, average low 34.5°. That is 3.8° above the climate normal for November. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 19 November (56.3°), the coolest 25 November (27.9°).
47.7°/34.5°
Average high / low
+3.8°
Above normal
2 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
48.9°
41.6°
+4.1°
24 November – 3 December
45.7°
39°
+3.7°
4 December – 13 December
at normal
34.4°
—
November records over 66 years
71.6°6 November 2024All-time high
3.7°22 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Swanville (13 mi).
Sun, 1543° / 33°0
43 °
Castine, Sunday, 15 November
Overcast. High 43°, low 33°.
Pressure29.88 inHg
Wind10.7 mph NW
Humidity61%
Visibility6.2 mi
Dew point30°
Mon, 1645° / 31°0
45 °
Castine, Monday, 16 November
Mostly clear. High 45°, low 31°.
Pressure30.27 inHg
Wind6.7 mph NW
Humidity60%
Visibility6.2 mi
Dew point29°
Tue, 1750° / 30°0
50 °
Castine, Tuesday, 17 November
Clear. High 50°, low 30°.
Pressure30.30 inHg
Wind6.3 mph W
Humidity53%
Visibility6.2 mi
Dew point33°
Wed, 1854° / 36°0
54 °
Castine, Wednesday, 18 November
Overcast. High 54°, low 36°.
Pressure30.21 inHg
Wind8 mph W
Humidity58%
Visibility6.2 mi
Dew point39°
Thu, 1956° / 37°0
56 °
Castine, Thursday, 19 November
Clear. High 56°, low 37°.
Pressure30.30 inHg
Wind7.4 mph S
Humidity51%
Visibility—
Dew point33°
Fri, 2056° / 40°0
56 °
Castine, Friday, 20 November
Clear. High 56°, low 40°.
Pressure30.03 inHg
Wind13.2 mph NW
Humidity60%
Visibility—
Dew point39°
Sat, 2142° / 30°0
42 °
Castine, Saturday, 21 November
Clear. High 42°, low 30°.
Pressure30.42 inHg
Wind8.7 mph N
Humidity49%
Visibility—
Dew point20°
Sun, 2250° / 37°0
50 °
Castine, Sunday, 22 November
Light rain. High 50°, low 37°.
Pressure30.15 inHg
Wind15.7 mph S
Humidity71%
Visibility—
Dew point36°
Mon, 2352° / 38°0.06
52 °
Castine, Monday, 23 November
Light rain. High 52°, low 38°.
Pressure29.53 inHg
Wind16.2 mph W
Humidity83%
Visibility—
Dew point46°
Tue, 2437° / 29°0
37 °
Castine, Tuesday, 24 November
Clear. High 37°, low 29°.
Pressure29.83 inHg
Wind18.5 mph NW
Humidity46%
Visibility—
Dew point15°
Wed, 2539° / 28°0
39 °
Castine, Wednesday, 25 November
Partly cloudy. High 39°, low 28°.
Pressure30.39 inHg
Wind13.5 mph NW
Humidity45%
Visibility—
Dew point15°
Thu, 2644° / 33°0
44 °
Castine, Thursday, 26 November
Overcast. High 44°, low 33°.
Pressure30.39 inHg
Wind9.7 mph SW
Humidity62%
Visibility—
Dew point29°
Fri, 2747° / 34°0
47 °
Castine, Friday, 27 November
Partly cloudy. High 47°, low 34°.
Pressure30.42 inHg
Wind8 mph N
Humidity48%
Visibility—
Dew point23°
Sat, 2850° / 37°0
50 °
Castine, Saturday, 28 November
Partly cloudy. High 50°, low 37°.
Pressure30.39 inHg
Wind14.3 mph SW
Humidity67%
Visibility—
Dew point35°
Sun, 2956° / 49°0.24
56 °
Castine, Sunday, 29 November
Light rain. High 56°, low 49°.
Pressure29.91 inHg
Wind16.9 mph SW
Humidity97%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3038° / 27°0.12
38 °
Castine, Monday, 30 November
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.12 in
Chance of precipitation25%
Record high55° (1963)
Record low4° (1989)
Tue, 0139° / 27°0.19
39 °
Castine, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.19 in
Chance of precipitation32%
Record high57° (2001)
Record low4° (1989)
Wed, 0238° / 26°0.15
38 °
Castine, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.15 in
Chance of precipitation33%
Record high51° (1985)
Record low-1° (1989)
Thu, 0338° / 26°0.19
38 °
Castine, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.19 in
Chance of precipitation45%
Record high58° (2009)
Record low-1° (1976)
Fri, 0436° / 24°0.14
36 °
Castine, Friday, 4 December
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.14 in
Chance of precipitation28%
Record high59° (1982)
Record low3° (1972)
Sat, 0534° / 23°0.14
34 °
Castine, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high34°
Average low23°
Average precipitation0.14 in
Chance of precipitation28%
Record high51° (1973)
Record low2° (2025)
Sun, 0637° / 24°0.17
37 °
Castine, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.17 in
Chance of precipitation40%
Record high60° (2001)
Record low4° (1991)
Mon, 0736° / 23°0.17
36 °
Castine, Monday, 7 December
Climate normal for this date — 60-year average.
Average high36°
Average low23°
Average precipitation0.17 in
Chance of precipitation42%
Record high60° (1998)
Record low3° (1991)
Tue, 0832° / 20°0.1
32 °
Castine, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high32°
Average low20°
Average precipitation0.1 in
Chance of precipitation37%
Record high50° (2022)
Record low-2° (1989)
Wed, 0934° / 19°0.14
34 °
Castine, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.14 in
Chance of precipitation38%
Record high50° (2019)
Record low-5° (1976)
Thu, 1035° / 22°0.13
35 °
Castine, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.13 in
Chance of precipitation40%
Record high53° (2019)
Record low-5° (1976)
Fri, 1135° / 22°0.2
35 °
Castine, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.2 in
Chance of precipitation38%
Record high55° (2024)
Record low-4° (1977)
Sat, 1233° / 21°0.13
33 °
Castine, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high33°
Average low21°
Average precipitation0.13 in
Chance of precipitation37%
Record high55° (2021)
Record low-10° (1977)
Sun, 1333° / 20°0.13
33 °
Castine, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high33°
Average low20°
Average precipitation0.13 in
Chance of precipitation33%
Record high51° (2010)
Record low-4° (1977)
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 Castine, 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 Castine, 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.