Monthly outlook for Castine, ME: average high 45.3°, average low 36.2°. That is 1.3° above the climate normal for November. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 20 November (50.5°), the coolest 23 November (31.5°).
45.3°/36.2°
Average high / low
+1.3°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 November – 17 November
45.4°
44.3°
+0.6°
18 November – 27 November
45.3°
40.3°
+2.8°
28 November – 7 December
at normal
37.4°
—
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).
Mon, 0949° / 37°0
49 °
Castine, Monday, 9 November
Overcast. High 49°, low 37°.
Pressure29.56 inHg
Wind6.1 mph W
Humidity65%
Visibility6.2 mi
Dew point38°
Tue, 1048° / 35°0.01
48 °
Castine, Tuesday, 10 November
Light rain. High 48°, low 35°.
Pressure29.74 inHg
Wind9.1 mph W
Humidity57%
Visibility6.2 mi
Dew point33°
Wed, 1148° / 36°0.01
48 °
Castine, Wednesday, 11 November
Light rain. High 48°, low 36°.
Pressure29.83 inHg
Wind11.7 mph NW
Humidity50%
Visibility6.2 mi
Dew point28°
Thu, 1246° / 34°0
46 °
Castine, Thursday, 12 November
Overcast. High 46°, low 34°.
Pressure29.83 inHg
Wind5.8 mph S
Humidity58%
Visibility6.2 mi
Dew point32°
Fri, 1343° / 36°0.02
43 °
Castine, Friday, 13 November
Light rain. High 43°, low 36°.
Pressure29.68 inHg
Wind11.1 mph N
Humidity68%
Visibility—
Dew point31°
Sat, 1446° / 36°0.87
46 °
Castine, Saturday, 14 November
Snow. High 46°, low 36°.
Pressure29.38 inHg
Wind24.1 mph W
Humidity89%
Visibility—
Dew point41°
Sun, 1542° / 38°0.07
42 °
Castine, Sunday, 15 November
Light rain. High 42°, low 38°.
Pressure29.18 inHg
Wind15.3 mph W
Humidity88%
Visibility—
Dew point37°
Mon, 1643° / 38°0
43 °
Castine, Monday, 16 November
Overcast. High 43°, low 38°.
Pressure29.50 inHg
Wind16.8 mph NW
Humidity76%
Visibility—
Dew point35°
Tue, 1745° / 36°0
45 °
Castine, Tuesday, 17 November
Partly cloudy. High 45°, low 36°.
Pressure29.88 inHg
Wind13.2 mph NW
Humidity69%
Visibility—
Dew point32°
Wed, 1846° / 34°0
46 °
Castine, Wednesday, 18 November
Clear. High 46°, low 34°.
Pressure30.12 inHg
Wind12.2 mph N
Humidity63%
Visibility—
Dew point31°
Thu, 1947° / 32°0
47 °
Castine, Thursday, 19 November
Mostly clear. High 47°, low 32°.
Pressure30.27 inHg
Wind7.2 mph SW
Humidity51%
Visibility—
Dew point25°
Fri, 2050° / 43°0
50 °
Castine, Friday, 20 November
Overcast. High 50°, low 43°.
Pressure29.97 inHg
Wind7.8 mph SW
Humidity68%
Visibility—
Dew point38°
Sat, 2145° / 41°0
45 °
Castine, Saturday, 21 November
Clear. High 45°, low 41°.
Pressure29.85 inHg
Wind14.2 mph NW
Humidity66%
Visibility—
Dew point34°
Sun, 2240° / 32°0.01
40 °
Castine, Sunday, 22 November
Light rain. High 40°, low 32°.
Pressure29.97 inHg
Wind7.4 mph NW
Humidity81%
Visibility—
Dew point34°
Mon, 2342° / 32°0
42 °
Castine, Monday, 23 November
Clear. High 42°, low 32°.
Pressure30.00 inHg
Wind14.7 mph NW
Humidity54%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2439° / 29°0.08
39 °
Castine, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.08 in
Chance of precipitation35%
Record high56° (2014)
Record low7° (1989)
Wed, 2539° / 29°0.15
39 °
Castine, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.15 in
Chance of precipitation37%
Record high56° (2014)
Record low13° (1993)
Thu, 2640° / 30°0.19
40 °
Castine, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high40°
Average low30°
Average precipitation0.19 in
Chance of precipitation55%
Record high54° (1979)
Record low11° (1978)
Fri, 2740° / 29°0.19
40 °
Castine, Friday, 27 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.19 in
Chance of precipitation48%
Record high56° (1999)
Record low6° (1978)
Sat, 2840° / 28°0.17
40 °
Castine, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.17 in
Chance of precipitation40%
Record high56° (2011)
Record low10° (1987)
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)
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.