Castine
Maine, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Castine, ME

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Contents

Weather in January

January, the same as December, in Castine, Maine, is another subzero cold winter month, with average temperature varying between 16.2°F (-8.8°C) and 28.4°F (-2°C). January is the coldest month, with an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.2°F (-8.8°C). Weather in January »

Weather in February

February, the last month of the winter, in Castine, is also a subzero cold month, with average temperature varying between 17.4°F (-8.1°C) and 29.8°F (-1.2°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 29.8°F (-1.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Castine, Maine, with average temperature ranging between max 37°F (2.8°C) and min 24.3°F (-4.3°C). In Castine, the average high-temperature in March marginally rises, from a freezing cold 29.8°F (-1.2°C) in February, to a cold 37°F (2.8°C). Weather in March »

Weather in April

April in Castine, Maine, is a chilly spring month, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 34.5°F (1.4°C). In April, the average high-temperature rises, from a wintry 37°F (2.8°C) in March, to a chilly 48.9°F (9.4°C). Weather in April »

Weather in May

May, the last month of the spring, in Castine, is a moderate month, with average temperature ranging between min 43.9°F (6.6°C) and max 59.7°F (15.4°C). In Castine, the average high-temperature rises, from a frosty 48.9°F (9.4°C) in April, to a mild 59.7°F (15.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Castine, Maine, with average temperature varying between 66.7°F (19.3°C) and 50.7°F (10.4°C). In Castine, the average high-temperature in June marginally rises, from a mild 59.7°F (15.4°C) in May, to an enjoyable 66.7°F (19.3°C). Weather in June »

Weather in July

July is a warm summer month in Castine, Maine, with average temperature varying between 73.9°F (23.3°C) and 57.7°F (14.3°C). The warmest months are July and August, with an average high-temperature of 73.9°F (23.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Castine, Maine, with average temperature fluctuating between 73.9°F (23.3°C) and 56.8°F (13.8°C). July and August, with an average high-temperature of 73.9°F (23.3°C), are the warmest months. Weather in August »

Weather in September

September, the first month of the autumn, in Castine, is also an enjoyable month, with average temperature ranging between max 67.1°F (19.5°C) and min 51.1°F (10.6°C). In Castine, the average high-temperature in September slightly decreases, from a warm 73.9°F (23.3°C) in August, to an enjoyable 67.1°F (19.5°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Castine, Maine, with average temperature fluctuating between 43.2°F (6.2°C) and 55.8°F (13.2°C). In Castine, Maine, the average high-temperature drops, from an enjoyable 67.1°F (19.5°C) in September, to a mild 55.8°F (13.2°C). Weather in October »

Weather in November

November, the last month of the autumn, in Castine, is also a frosty month, with average temperature fluctuating between 44.1°F (6.7°C) and 32.7°F (0.4°C). In November, the average high-temperature drops, from a moderate 55.8°F (13.2°C) in October, to a frosty 44.1°F (6.7°C). Weather in November »

Weather in December

December, the first month of the winter, in Castine, is also a wintry month, with average temperature fluctuating between 34.2°F (1.2°C) and 24.1°F (-4.4°C). In Castine, the average high-temperature in December decreases, from a chilly 44.1°F (6.7°C) in November, to a cold 34.2°F (1.2°C). Weather in December »

FAQ

What is the coldest month in Castine?

January is the coldest month in Castine, with an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.2°F (-8.8°C).

How much does it rain in Castine?

Throughout the year, in Castine, Maine, there are 141.1 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

When does it snow in Castine?

January through May, October through December are months with snowfall in Castine, Maine.

How many days does it snow in Castine?

Throughout the year, in Castine, Maine, there are 44.3 snowfall days, and 16.81" (427mm) of snow is accumulated.

What is the snowiest month in Castine?

January is the month with the most snowfall. Snow falls for 10.1 days and accumulates 4.57" (116mm) of snow.

What are the months with the lowest UV index in Castine?

Months with the lowest UV index in Castine, Maine, are January through March, November and December, with an average maximum UV index of 2.

What are the most humid months in Castine?

February and July, with an average relative humidity of 83%, are most humid months.

What is the month with the least sunshine in Castine?

The month with the least sunshine in Castine is February, with an average of 4.3h of sunshine.

What month is the ocean coldest in Castine?

March is the month with the coldest seawater in Castine, with an average ocean temperature of 38.3°F (3.5°C).

When it does not snow in Castine?

June through September are months without snowfall in Castine, Maine.

When are the longest days in Castine?

June has the longest days of the year, with an average of 15.5h of daylight.

What is the month with the highest UV index in Castine?

Months with the highest UV index in Castine are June through August, with an average maximum UV index of 5.

What are the warmest months in Castine?

July and August, with an average high-temperature of 73.9°F (23.3°C), are warmest months.

What is the driest month in Castine?

July and September are months with the least rain in Castine when the rain falls for 14.5 days and typically aggregates up to 1.46" (37mm) of rain.

What is the month with the warmest ocean in Castine?

With an average ocean temperature of 58.6°F (14.8°C), August is the month with the warmest seawater.

What month has the most sunshine in Castine?

August has the most sunshine of the year in Castine, Maine, with an average of 9.9h of sunshine.

What is the least humid month in Castine?

November is the least humid month in Castine, Maine, with an average relative humidity of 77%.

What is the rainiest month in Castine?

December is the month with the most rainfall in Castine, Maine. Rain falls for 10.1 days and accumulates 2.72" (69mm) of precipitation.

What is the month with the shortest days in Castine?

The month with the shortest days is December, with an average of 8.9h of daylight.

Average temperature
Castine, ME

Average temperature - Castine, ME

Warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average humidity
Castine, ME

Average humidity - Castine, ME

Months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).

Average rainfall
Castine, ME

Average rainfall - Castine, ME

The wettest month (with the highest rainfall) is December (2.72").
Driest months (with the lowest rainfall) are July and September (1.46").

Average rainfall days
Castine, ME

Average rainfall days - Castine, ME

The month with the highest number of rainy days is May (15.3 days).
The month with the lowest number of rainy days is February (7.1 days).

Average snowfall
Castine, ME

Average snowfall - Castine, ME

The month with the highest snowfall is January (4.57").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days
Castine, ME

Average snowfall days - Castine, ME

The month with the highest number of snowfall days is January (10.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature
Castine, ME

Average sea temperature - Castine, ME

The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).

Average daylight / Average sunshine
Castine, ME

Average daylight / Average sunshine - Castine, ME

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

The month with most sunshine is August (Average sunshine: 9.9h).
The month with least sunshine is February (Average sunshine: 4.3h).

Average UV index
Castine, ME

Average UV index - Castine, ME

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 2).