As of 13:48 EDT

Weather in Castine, ME

48°Current weather

Castine, Wednesday, 28 October, 13:48

Partly cloudy. Feels like 46°. High 48°, low 27°.

Pressure30.42 inHg
Wind5.6 mph S
Humidity54%
Visibility6.2 mi
Dew point33°

Monthly outlook for Castine, ME: average high 51.2°, average low 35.5°. That is 1.6° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 29 October (61.9°), the coolest 28 October (27.4°).

51.2°/35.5°
Average high / low
+1.6°
Above normal
2 / 5
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
28 October – 6 November53.5°49.5°+2.2°
7 November – 16 November47.5°44.9°+1.4°
17 November – 26 Novemberat normal40.6°—

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).

Thu, 2962° / 32°0Clear
62 °Clear

Castine, Thursday, 29 October

Clear. High 62°, low 32°.

Pressure30.12 inHg
Wind7 mph S
Humidity59%
Visibility6.2 mi
Dew point41°
Fri, 3061° / 46°0.04Light rain
61 °Light rain

Castine, Friday, 30 October

Light rain. High 61°, low 46°.

Pressure29.88 inHg
Wind12.2 mph NW
Humidity55%
Visibility6.2 mi
Dew point45°
Sat, 3147° / 34°0Partly cloudy
47 °Partly cloudy

Castine, Saturday, 31 October

Partly cloudy. High 47°, low 34°.

Pressure30.27 inHg
Wind12.5 mph NW
Humidity53%
Visibility6.2 mi
Dew point24°
Sun, 0151° / 31°0Clear
51 °Clear

Castine, Sunday, 1 November

Clear. High 51°, low 31°.

Pressure30.36 inHg
Wind6.6 mph W
Humidity51%
Visibility6.2 mi
Dew point29°
Mon, 0259° / 37°0.02Light rain
59 °Light rain

Castine, Monday, 2 November

Light rain. High 59°, low 37°.

Pressure30.24 inHg
Wind7.3 mph W
Humidity55%
Visibility—
Dew point35°
Tue, 0347° / 34°0.02Light rain
47 °Light rain

Castine, Tuesday, 3 November

Light rain. High 47°, low 34°.

Pressure30.36 inHg
Wind12.8 mph NE
Humidity48%
Visibility—
Dew point24°
Wed, 0446° / 31°0Mostly clear
46 °Mostly clear

Castine, Wednesday, 4 November

Mostly clear. High 46°, low 31°.

Pressure30.47 inHg
Wind7.2 mph S
Humidity32%
Visibility—
Dew point15°
Thu, 0554° / 41°0Overcast
54 °Overcast

Castine, Thursday, 5 November

Overcast. High 54°, low 41°.

Pressure30.27 inHg
Wind15.1 mph S
Humidity77%
Visibility—
Dew point42°
Fri, 0659° / 53°0.91Heavy rain
59 °Heavy rain

Castine, Friday, 6 November

Heavy rain. High 59°, low 53°.

Pressure29.56 inHg
Wind25 mph S
Humidity96%
Visibility—
Dew point57°
Sat, 0750° / 37°0Light rain
50 °Light rain

Castine, Saturday, 7 November

Light rain. High 50°, low 37°.

Pressure29.88 inHg
Wind16.9 mph NW
Humidity55%
Visibility—
Dew point29°
Sun, 0845° / 31°0Clear
45 °Clear

Castine, Sunday, 8 November

Clear. High 45°, low 31°.

Pressure30.30 inHg
Wind10.6 mph NW
Humidity49%
Visibility—
Dew point21°
Mon, 0946° / 31°0Mostly clear
46 °Mostly clear

Castine, Monday, 9 November

Mostly clear. High 46°, low 31°.

Pressure30.42 inHg
Wind5.5 mph N
Humidity46%
Visibility—
Dew point22°
Tue, 1047° / 32°0Clear
47 °Clear

Castine, Tuesday, 10 November

Clear. High 47°, low 32°.

Pressure30.33 inHg
Wind6.1 mph S
Humidity48%
Visibility—
Dew point24°
Wed, 1150° / 36°0Overcast
50 °Overcast

Castine, Wednesday, 11 November

Overcast. High 50°, low 36°.

Pressure30.18 inHg
Wind10.5 mph SW
Humidity64%
Visibility—
Dew point35°
Thu, 1247° / 35°0.06Light rain
47 °Light rain

Castine, Thursday, 12 November

Light rain. High 47°, low 35°.

Pressure30.33 inHg
Wind17.8 mph E
Humidity66%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 1343° / 33°0.17Climate normal
43 °Climate normal

Castine, Friday, 13 November

Climate normal for this date — 60-year average.

Average high43°
Average low33°
Average precipitation0.17 in
Chance of precipitation37%
Record high59° (1964)
Record low15° (2019)
Sat, 1443° / 32°0.11Climate normal
43 °Climate normal

Castine, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high43°
Average low32°
Average precipitation0.11 in
Chance of precipitation40%
Record high57° (2011)
Record low13° (1986)
Sun, 1544° / 33°0.15Climate normal
44 °Climate normal

Castine, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high44°
Average low33°
Average precipitation0.15 in
Chance of precipitation38%
Record high59° (1994)
Record low15° (2018)
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)

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.