As of 08:48 EDT

Weather in Castine, ME

40°Current weather

Castine, Saturday, 31 October, 08:48

Clear. Feels like 34°. High 49°, low 37°.

Pressure30.27 inHg
Wind10 mph W
Humidity71%
Visibility6.2 mi
Dew point32°

Monthly outlook for Castine, ME: average high 51.3°, average low 39.6°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 5 November (67.2°), the coolest 15 November (29.6°).

51.3°/39.6°
Average high / low
+2.4°
Above normal
5 / 6
Wet days / normal
1.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
31 October – 9 November54.6°48.6°+3.3°
10 November – 19 November45.9°43.4°+1.4°
20 November – 29 Novemberat normal39.8°—

October records over 66 years

83.1°6 October 2025All-time high
25.7°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Swanville (13 mi).

Sun, 0154° / 33°0Clear
54 °Clear

Castine, Sunday, 1 November

Clear. High 54°, low 33°.

Pressure30.36 inHg
Wind7.1 mph W
Humidity48%
Visibility6.2 mi
Dew point31°
Mon, 0261° / 43°0Overcast
61 °Overcast

Castine, Monday, 2 November

Overcast. High 61°, low 43°.

Pressure30.18 inHg
Wind9.4 mph W
Humidity47%
Visibility6.2 mi
Dew point40°
Tue, 0352° / 44°0.08Light rain
52 °Light rain

Castine, Tuesday, 3 November

Light rain. High 52°, low 44°.

Pressure30.36 inHg
Wind3.8 mph SE
Humidity78%
Visibility6.2 mi
Dew point45°
Wed, 0455° / 47°0.08Light rain
55 °Light rain

Castine, Wednesday, 4 November

Light rain. High 55°, low 47°.

Pressure30.24 inHg
Wind8 mph S
Humidity94%
Visibility—
Dew point51°
Thu, 0567° / 49°0Overcast
67 °Overcast

Castine, Thursday, 5 November

Overcast. High 67°, low 49°.

Pressure30.00 inHg
Wind9.5 mph SW
Humidity70%
Visibility—
Dew point51°
Fri, 0655° / 42°0Clear
55 °Clear

Castine, Friday, 6 November

Clear. High 55°, low 42°.

Pressure30.18 inHg
Wind9.1 mph NE
Humidity70%
Visibility—
Dew point41°
Sat, 0754° / 38°0Clear
54 °Clear

Castine, Saturday, 7 November

Clear. High 54°, low 38°.

Pressure30.21 inHg
Wind5.3 mph N
Humidity64%
Visibility—
Dew point36°
Sun, 0853° / 39°0Overcast
53 °Overcast

Castine, Sunday, 8 November

Overcast. High 53°, low 39°.

Pressure30.06 inHg
Wind6.4 mph NE
Humidity53%
Visibility—
Dew point32°
Mon, 0946° / 42°0.06Light rain
46 °Light rain

Castine, Monday, 9 November

Light rain. High 46°, low 42°.

Pressure30.15 inHg
Wind10.1 mph S
Humidity70%
Visibility—
Dew point34°
Tue, 1048° / 43°0.17Rain
48 °Rain

Castine, Tuesday, 10 November

Rain. High 48°, low 43°.

Pressure29.97 inHg
Wind8.4 mph N
Humidity84%
Visibility—
Dew point44°
Wed, 1154° / 42°1.49Heavy rain
54 °Heavy rain

Castine, Wednesday, 11 November

Heavy rain. High 54°, low 42°.

Pressure29.29 inHg
Wind26.6 mph SE
Humidity95%
Visibility—
Dew point48°
Thu, 1245° / 38°0Partly cloudy
45 °Partly cloudy

Castine, Thursday, 12 November

Partly cloudy. High 45°, low 38°.

Pressure29.26 inHg
Wind22.4 mph W
Humidity58%
Visibility—
Dew point29°
Fri, 1343° / 35°0Mostly clear
43 °Mostly clear

Castine, Friday, 13 November

Mostly clear. High 43°, low 35°.

Pressure29.50 inHg
Wind23.1 mph NW
Humidity55%
Visibility—
Dew point26°
Sat, 1442° / 31°0Mostly clear
42 °Mostly clear

Castine, Saturday, 14 November

Mostly clear. High 42°, low 31°.

Pressure29.88 inHg
Wind15.8 mph NW
Humidity53%
Visibility—
Dew point21°
Sun, 1543° / 30°0Partly cloudy
43 °Partly cloudy

Castine, Sunday, 15 November

Partly cloudy. High 43°, low 30°.

Pressure29.91 inHg
Wind11.4 mph N
Humidity54%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 1643° / 32°0.17Climate normal
43 °Climate normal

Castine, Monday, 16 November

Climate normal for this date — 60-year average.

Average high43°
Average low32°
Average precipitation0.17 in
Chance of precipitation35%
Record high58° (2008)
Record low14° (2019)
Tue, 1742° / 31°0.12Climate normal
42 °Climate normal

Castine, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high42°
Average low31°
Average precipitation0.12 in
Chance of precipitation27%
Record high58° (2006)
Record low19° (1997)
Wed, 1842° / 31°0.09Climate normal
42 °Climate normal

Castine, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high42°
Average low31°
Average precipitation0.09 in
Chance of precipitation27%
Record high61° (1987)
Record low19° (1997)
Thu, 1941° / 30°0.09Climate normal
41 °Climate normal

Castine, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high41°
Average low30°
Average precipitation0.09 in
Chance of precipitation28%
Record high55° (2017)
Record low15° (2018)
Fri, 2041° / 31°0.14Climate normal
41 °Climate normal

Castine, Friday, 20 November

Climate normal for this date — 60-year average.

Average high41°
Average low31°
Average precipitation0.14 in
Chance of precipitation37%
Record high61° (1991)
Record low16° (1986)
Sat, 2141° / 30°0.16Climate normal
41 °Climate normal

Castine, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high41°
Average low30°
Average precipitation0.16 in
Chance of precipitation30%
Record high58° (1991)
Record low18° (2022)
Sun, 2240° / 30°0.19Climate normal
40 °Climate normal

Castine, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high40°
Average low30°
Average precipitation0.19 in
Chance of precipitation43%
Record high56° (1992)
Record low4° (2018)
Mon, 2339° / 29°0.13Climate normal
39 °Climate normal

Castine, Monday, 23 November

Climate normal for this date — 60-year average.

Average high39°
Average low29°
Average precipitation0.13 in
Chance of precipitation28%
Record high61° (1999)
Record low9° (2018)
Tue, 2439° / 29°0.08Climate normal
39 °Climate normal

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°0.15Climate normal
39 °Climate normal

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°0.19Climate normal
40 °Climate normal

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°0.19Climate normal
40 °Climate normal

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°0.17Climate normal
40 °Climate normal

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°0.13Climate normal
39 °Climate normal

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)

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.