As of 10:04 EDT

Weather in Castine, ME

51°Current weather

Castine, Thursday, 29 October, 10:04

Clear. Feels like 50°. High 58°, low 38°.

Pressure30.12 inHg
Wind6 mph S
Humidity74%
Visibility6.2 mi
Dew point43°

Monthly outlook for Castine, ME: average high 51.2°, average low 38.8°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 2 November (63.3°), the coolest 1 November (31.8°).

51.2°/38.8°
Average high / low
+1.9°
Above normal
3 / 5
Wet days / normal
1.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
29 October – 7 November55.5°49.2°+3.5°
8 November – 17 November44°44.3°-0.2°
18 November – 27 Novemberat normal40.3°—

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).

Fri, 3061° / 49°0.01Light rain
61 °Light rain

Castine, Friday, 30 October

Light rain. High 61°, low 49°.

Pressure29.85 inHg
Wind11.6 mph W
Humidity55%
Visibility6.2 mi
Dew point44°
Sat, 3149° / 34°0Mostly clear
49 °Mostly clear

Castine, Saturday, 31 October

Mostly clear. High 49°, low 34°.

Pressure30.30 inHg
Wind11.2 mph NW
Humidity55%
Visibility6.2 mi
Dew point25°
Sun, 0151° / 32°0Clear
51 °Clear

Castine, Sunday, 1 November

Clear. High 51°, low 32°.

Pressure30.39 inHg
Wind7.7 mph W
Humidity49%
Visibility6.2 mi
Dew point29°
Mon, 0263° / 38°0Light rain
63 °Light rain

Castine, Monday, 2 November

Light rain. High 63°, low 38°.

Pressure30.18 inHg
Wind8.7 mph W
Humidity51%
Visibility—
Dew point36°
Tue, 0355° / 45°0Light rain
55 °Light rain

Castine, Tuesday, 3 November

Light rain. High 55°, low 45°.

Pressure30.33 inHg
Wind5.2 mph S
Humidity81%
Visibility—
Dew point47°
Wed, 0448° / 40°0Partly cloudy
48 °Partly cloudy

Castine, Wednesday, 4 November

Partly cloudy. High 48°, low 40°.

Pressure30.56 inHg
Wind10 mph SW
Humidity54%
Visibility—
Dew point31°
Thu, 0555° / 46°0Overcast
55 °Overcast

Castine, Thursday, 5 November

Overcast. High 55°, low 46°.

Pressure30.21 inHg
Wind13.3 mph S
Humidity71%
Visibility—
Dew point43°
Fri, 0657° / 52°1.11Rain
57 °Rain

Castine, Friday, 6 November

Rain. High 57°, low 52°.

Pressure29.80 inHg
Wind19.6 mph S
Humidity96%
Visibility—
Dew point55°
Sat, 0757° / 39°0.16Light rain
57 °Light rain

Castine, Saturday, 7 November

Light rain. High 57°, low 39°.

Pressure29.50 inHg
Wind17.8 mph N
Humidity99%
Visibility—
Dew point56°
Sun, 0842° / 34°0Partly cloudy
42 °Partly cloudy

Castine, Sunday, 8 November

Partly cloudy. High 42°, low 34°.

Pressure29.68 inHg
Wind20.9 mph NW
Humidity58%
Visibility—
Dew point26°
Mon, 0944° / 34°0Overcast
44 °Overcast

Castine, Monday, 9 November

Overcast. High 44°, low 34°.

Pressure29.77 inHg
Wind20.2 mph NW
Humidity59%
Visibility—
Dew point26°
Tue, 1047° / 34°0Clear
47 °Clear

Castine, Tuesday, 10 November

Clear. High 47°, low 34°.

Pressure30.03 inHg
Wind14.5 mph NW
Humidity57%
Visibility—
Dew point26°
Wed, 1147° / 33°0Clear
47 °Clear

Castine, Wednesday, 11 November

Clear. High 47°, low 33°.

Pressure30.00 inHg
Wind7.2 mph NE
Humidity58%
Visibility—
Dew point28°
Thu, 1243° / 33°0Overcast
43 °Overcast

Castine, Thursday, 12 November

Overcast. High 43°, low 33°.

Pressure29.80 inHg
Wind14.5 mph N
Humidity77%
Visibility—
Dew point32°
Fri, 1340° / 38°0.13Light rain
40 °Light rain

Castine, Friday, 13 November

Light rain. High 40°, low 38°.

Pressure29.77 inHg
Wind14.1 mph N
Humidity87%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.