As of 05:03 EDT

Weather in Castine, ME

39°Current weather

Castine, Sunday, 25 October, 05:03

Clear. Feels like 36°. High 63°, low 36°.

Pressure30.47 inHg
Wind3.6 mph NW
Humidity77%
Visibility6.2 mi
Dew point31°

Monthly outlook for Castine, ME: average high 53.2°, average low 39.4°. That is 2.1° above the climate normal for October. Precipitation is expected on 6 days (about 3.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 30 October (63.8°), the coolest 28 October (30.5°).

53.2°/39.4°
Average high / low
+2.1°
Above normal
6 / 5
Wet days / normal
3.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November56.5°50.4°+3.4°
4 November – 13 November47.7°46.6°+0.6°
14 November – 23 Novemberat normal41.6°—

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).

Mon, 2663° / 38°0Partly cloudy
63 °Partly cloudy

Castine, Monday, 26 October

Partly cloudy. High 63°, low 38°.

Pressure30.09 inHg
Wind3.8 mph W
Humidity41%
Visibility6.2 mi
Dew point37°
Tue, 2748° / 35°0Clear
48 °Clear

Castine, Tuesday, 27 October

Clear. High 48°, low 35°.

Pressure30.30 inHg
Wind8.9 mph N
Humidity53%
Visibility6.2 mi
Dew point23°
Wed, 2848° / 31°0Clear
48 °Clear

Castine, Wednesday, 28 October

Clear. High 48°, low 31°.

Pressure30.50 inHg
Wind2.6 mph W
Humidity55%
Visibility6.2 mi
Dew point24°
Thu, 2956° / 37°0Mostly clear
56 °Mostly clear

Castine, Thursday, 29 October

Mostly clear. High 56°, low 37°.

Pressure30.24 inHg
Wind10.4 mph S
Humidity75%
Visibility—
Dew point42°
Fri, 3064° / 47°0.29Light rain
64 °Light rain

Castine, Friday, 30 October

Light rain. High 64°, low 47°.

Pressure29.94 inHg
Wind10.5 mph W
Humidity89%
Visibility—
Dew point54°
Sat, 3152° / 41°0Clear
52 °Clear

Castine, Saturday, 31 October

Clear. High 52°, low 41°.

Pressure30.39 inHg
Wind7.7 mph NW
Humidity55%
Visibility—
Dew point33°
Sun, 0154° / 38°0Clear
54 °Clear

Castine, Sunday, 1 November

Clear. High 54°, low 38°.

Pressure30.45 inHg
Wind8.1 mph S
Humidity65%
Visibility—
Dew point38°
Mon, 0257° / 47°0Overcast
57 °Overcast

Castine, Monday, 2 November

Overcast. High 57°, low 47°.

Pressure30.30 inHg
Wind9 mph S
Humidity77%
Visibility—
Dew point49°
Tue, 0360° / 52°0Overcast
60 °Overcast

Castine, Tuesday, 3 November

Overcast. High 60°, low 52°.

Pressure30.06 inHg
Wind13.5 mph SW
Humidity76%
Visibility—
Dew point51°
Wed, 0463° / 44°0.04Light rain
63 °Light rain

Castine, Wednesday, 4 November

Light rain. High 63°, low 44°.

Pressure29.91 inHg
Wind12.8 mph NE
Humidity89%
Visibility—
Dew point55°
Thu, 0546° / 41°1.05Rain
46 °Rain

Castine, Thursday, 5 November

Rain. High 46°, low 41°.

Pressure30.00 inHg
Wind24.3 mph NE
Humidity66%
Visibility—
Dew point35°
Fri, 0642° / 36°1.36Snow
42 °Snow

Castine, Friday, 6 November

Snow. High 42°, low 36°.

Pressure29.65 inHg
Wind21.3 mph NE
Humidity96%
Visibility—
Dew point37°
Sat, 0746° / 36°0.02Snow
46 °Snow

Castine, Saturday, 7 November

Snow. High 46°, low 36°.

Pressure29.80 inHg
Wind8.8 mph NW
Humidity83%
Visibility—
Dew point36°
Sun, 0844° / 37°0.53Rain
44 °Rain

Castine, Sunday, 8 November

Rain. High 44°, low 37°.

Pressure29.68 inHg
Wind19.7 mph E
Humidity95%
Visibility—
Dew point39°
Mon, 0946° / 35°0.06Light rain
46 °Light rain

Castine, Monday, 9 November

Light rain. High 46°, low 35°.

Pressure29.97 inHg
Wind20 mph N
Humidity71%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.