As of 21:21 EDT

Weather in Castine, ME

50°Current weather

Castine, Thursday, 22 October, 21:21

Clear. Feels like 45°. High 60°, low 40°.

Pressure30.00 inHg
Wind14 mph N
Humidity61%
Visibility6.2 mi
Dew point37°

Monthly outlook for Castine, ME: average high 52.6°, average low 39.2°. That is 1.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 5 days and 2.4 inches. The warmest day looks like 2 November (61.3°), the coolest 24 October (28.7°).

52.6°/39.2°
Average high / low
+1.2°
Above normal
4 / 5
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
22 October – 31 October53.1°51.3°+1°
1 November – 10 November51.7°48.2°+2°
11 November – 20 Novemberat normal42.9°—

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, 2352° / 38°0Clear
52 °Clear

Castine, Friday, 23 October

Clear. High 52°, low 38°.

Pressure30.27 inHg
Wind13 mph N
Humidity53%
Visibility6.2 mi
Dew point29°
Sat, 2456° / 29°0Clear
56 °Clear

Castine, Saturday, 24 October

Clear. High 56°, low 29°.

Pressure30.45 inHg
Wind5.8 mph N
Humidity48%
Visibility6.2 mi
Dew point29°
Sun, 2557° / 36°0Clear
57 °Clear

Castine, Sunday, 25 October

Clear. High 57°, low 36°.

Pressure30.47 inHg
Wind3.9 mph S
Humidity44%
Visibility6.2 mi
Dew point35°
Mon, 2658° / 39°0.01Light rain
58 °Light rain

Castine, Monday, 26 October

Light rain. High 58°, low 39°.

Pressure30.12 inHg
Wind3.5 mph W
Humidity53%
Visibility6.2 mi
Dew point41°
Tue, 2746° / 34°0Overcast
46 °Overcast

Castine, Tuesday, 27 October

Overcast. High 46°, low 34°.

Pressure30.30 inHg
Wind9.1 mph NW
Humidity58%
Visibility—
Dew point29°
Wed, 2846° / 30°0Clear
46 °Clear

Castine, Wednesday, 28 October

Clear. High 46°, low 30°.

Pressure30.50 inHg
Wind7 mph S
Humidity58%
Visibility—
Dew point27°
Thu, 2952° / 35°0Overcast
52 °Overcast

Castine, Thursday, 29 October

Overcast. High 52°, low 35°.

Pressure30.42 inHg
Wind14 mph SW
Humidity65%
Visibility—
Dew point36°
Fri, 3054° / 50°0.13Light rain
54 °Light rain

Castine, Friday, 30 October

Light rain. High 54°, low 50°.

Pressure30.06 inHg
Wind12.8 mph SW
Humidity81%
Visibility—
Dew point48°
Sat, 3151° / 38°0.02Light rain
51 °Light rain

Castine, Saturday, 31 October

Light rain. High 51°, low 38°.

Pressure30.33 inHg
Wind11.2 mph N
Humidity52%
Visibility—
Dew point31°
Sun, 0155° / 39°0.31Rain
55 °Rain

Castine, Sunday, 1 November

Rain. High 55°, low 39°.

Pressure30.36 inHg
Wind17.2 mph S
Humidity67%
Visibility—
Dew point38°
Mon, 0261° / 54°0Light rain
61 °Light rain

Castine, Monday, 2 November

Light rain. High 61°, low 54°.

Pressure30.06 inHg
Wind9.6 mph N
Humidity87%
Visibility—
Dew point55°
Tue, 0351° / 48°0.09Light rain
51 °Light rain

Castine, Tuesday, 3 November

Light rain. High 51°, low 48°.

Pressure30.15 inHg
Wind8.5 mph NE
Humidity89%
Visibility—
Dew point46°
Wed, 0448° / 38°0Clear
48 °Clear

Castine, Wednesday, 4 November

Clear. High 48°, low 38°.

Pressure30.24 inHg
Wind12.2 mph N
Humidity62%
Visibility—
Dew point32°
Thu, 0547° / 40°0.73Rain
47 °Rain

Castine, Thursday, 5 November

Rain. High 47°, low 40°.

Pressure29.47 inHg
Wind18.7 mph E
Humidity94%
Visibility—
Dew point45°
Fri, 0648° / 37°0.01Light rain
48 °Light rain

Castine, Friday, 6 November

Light rain. High 48°, low 37°.

Pressure29.56 inHg
Wind17.6 mph SW
Humidity69%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0748° / 37°0.05Climate normal
48 °Climate normal

Castine, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high48°
Average low37°
Average precipitation0.05 in
Chance of precipitation25%
Record high71° (2022)
Record low17° (2002)
Sun, 0846° / 35°0.11Climate normal
46 °Climate normal

Castine, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.11 in
Chance of precipitation20%
Record high58° (1975)
Record low16° (2002)
Mon, 0946° / 35°0.12Climate normal
46 °Climate normal

Castine, Monday, 9 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.12 in
Chance of precipitation30%
Record high65° (2020)
Record low23° (1971)
Tue, 1046° / 35°0.14Climate normal
46 °Climate normal

Castine, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation40%
Record high66° (2020)
Record low23° (1965)
Wed, 1146° / 36°0.11Climate normal
46 °Climate normal

Castine, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high46°
Average low36°
Average precipitation0.11 in
Chance of precipitation45%
Record high66° (2020)
Record low22° (2017)
Thu, 1245° / 34°0.14Climate normal
45 °Climate normal

Castine, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°
Average low34°
Average precipitation0.14 in
Chance of precipitation33%
Record high65° (2022)
Record low24° (1976)
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)

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.