Monthly outlook for Castine, ME: average high 48.2°, average low 36.4°. That is 3.9° above the climate normal for November. Precipitation is expected on 3 days (about 2.5 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 24 November (57.3°), the coolest 17 November (29.9°).
48.2°/36.4°
Average high / low
+3.9°
Above normal
3 / 6
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 November – 22 November
48.1°
42°
+3.4°
23 November – 2 December
48.2°
39.1°
+5°
3 December – 12 December
at normal
34.9°
—
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).
Sat, 1441° / 32°0
41 °
Castine, Saturday, 14 November
Overcast. High 41°, low 32°.
Pressure29.59 inHg
Wind4.9 mph NW
Humidity65%
Visibility6.2 mi
Dew point30°
Sun, 1545° / 31°0
45 °
Castine, Sunday, 15 November
Light rain. High 45°, low 31°.
Pressure29.91 inHg
Wind10.6 mph NW
Humidity63%
Visibility6.2 mi
Dew point31°
Mon, 1645° / 32°0
45 °
Castine, Monday, 16 November
Clear. High 45°, low 32°.
Pressure30.27 inHg
Wind6.1 mph NW
Humidity60%
Visibility6.2 mi
Dew point29°
Tue, 1749° / 30°0
49 °
Castine, Tuesday, 17 November
Clear. High 49°, low 30°.
Pressure30.36 inHg
Wind6.9 mph W
Humidity64%
Visibility—
Dew point30°
Wed, 1854° / 34°0
54 °
Castine, Wednesday, 18 November
Partly cloudy. High 54°, low 34°.
Pressure30.30 inHg
Wind8 mph W
Humidity65%
Visibility—
Dew point36°
Thu, 1955° / 40°0
55 °
Castine, Thursday, 19 November
Clear. High 55°, low 40°.
Pressure30.30 inHg
Wind5.3 mph S
Humidity52%
Visibility—
Dew point32°
Fri, 2057° / 42°0
57 °
Castine, Friday, 20 November
Overcast. High 57°, low 42°.
Pressure30.09 inHg
Wind14.6 mph N
Humidity54%
Visibility—
Dew point33°
Sat, 2141° / 31°0
41 °
Castine, Saturday, 21 November
Clear. High 41°, low 31°.
Pressure30.50 inHg
Wind10.6 mph N
Humidity43%
Visibility—
Dew point18°
Sun, 2253° / 43°0
53 °
Castine, Sunday, 22 November
Overcast. High 53°, low 43°.
Pressure30.33 inHg
Wind13 mph SW
Humidity88%
Visibility—
Dew point45°
Mon, 2356° / 49°0.06
56 °
Castine, Monday, 23 November
Light rain. High 56°, low 49°.
Pressure30.21 inHg
Wind9.6 mph SW
Humidity87%
Visibility—
Dew point50°
Tue, 2457° / 52°0.54
57 °
Castine, Tuesday, 24 November
Rain. High 57°, low 52°.
Pressure30.00 inHg
Wind18.6 mph SE
Humidity96%
Visibility—
Dew point52°
Wed, 2556° / 36°1.88
56 °
Castine, Wednesday, 25 November
Heavy rain. High 56°, low 36°.
Pressure29.32 inHg
Wind23.9 mph SE
Humidity98%
Visibility—
Dew point52°
Thu, 2640° / 33°0
40 °
Castine, Thursday, 26 November
Clear. High 40°, low 33°.
Pressure29.97 inHg
Wind11.8 mph SW
Humidity42%
Visibility—
Dew point16°
Fri, 2743° / 32°0
43 °
Castine, Friday, 27 November
Overcast. High 43°, low 32°.
Pressure29.88 inHg
Wind14.5 mph SW
Humidity50%
Visibility—
Dew point23°
Sat, 2838° / 31°0
38 °
Castine, Saturday, 28 November
Clear. High 38°, low 31°.
Pressure30.00 inHg
Wind11.9 mph W
Humidity42%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2939° / 28°0.13
39 °
Castine, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.13 in
Chance of precipitation38%
Record high57° (1990)
Record low5° (1989)
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)
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.