Climate and monthly weather forecast
South Bristol, ME

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Weather in January

January, like December, is another subzero cold winter month in South Bristol, Maine, with an average temperature varying between 18°F (-7.8°C) and 29.7°F (-1.3°C). January is the coldest month, with the temperature often reaching an average high of 29.7°F (-1.3°C) and an average low of 18°F (-7.8°C). Weather in January »

Weather in February

February, the last month of the winter in South Bristol, is another freezing cold month, with an average temperature fluctuating between 19°F (-7.2°C) and 31.5°F (-0.3°C). The average high-temperature is a still freezing cold 31.5°F (-0.3°C) in February, hardly different from the 29.7°F (-1.3°C) recorded in January. Weather in February »

Weather in March

March, the first month of the spring in South Bristol, is a wintry month, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 37.9°F (3.3°C). With the onset of March, the average high-temperature subtly transitions from a subzero cold 31.5°F (-0.3°C) in February to a wintry 37.9°F (3.3°C). Weather in March »

Weather in April

April in South Bristol, Maine, is a chilly spring month, with an average temperature fluctuating between 36.1°F (2.3°C) and 49.1°F (9.5°C). The average high-temperature increases in April, moving from a cold 37.9°F (3.3°C) in March to a frosty 49.1°F (9.5°C). Weather in April »

Weather in May

May, the last month of the spring in South Bristol, is a mild month, with an average temperature fluctuating between 45.5°F (7.5°C) and 59.4°F (15.2°C). In South Bristol, the average high-temperature in May increases from a chilly 49.1°F (9.5°C) in April to a mild 59.4°F (15.2°C). Weather in May »

Weather in June

The first month of the summer, June, is a refreshing month in South Bristol, Maine, with an average temperature varying between 66.7°F (19.3°C) and 52.7°F (11.5°C). South Bristol's transition into June sees a mild rise in the average high-temperature, edging from 59.4°F (15.2°C) in May to a still refreshing 66.7°F (19.3°C). Weather in June »

Weather in July

July in South Bristol, Maine, is a moderately hot summer month, with an average temperature fluctuating between 59.5°F (15.3°C) and 74.1°F (23.4°C). July and August, with an average high-temperature of 74.1°F (23.4°C), are marked as the warmest months. Weather in July »

Weather in August

August, the last month of the summer in South Bristol, is another warm month, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 59.2°F (15.1°C). South Bristol's warmest period falls in July and August, when the average high-temperatures ascend to 74.1°F (23.4°C). Weather in August »

Weather in September

September, the first month of the autumn in South Bristol, is still a refreshing month, with an average temperature fluctuating between 53.6°F (12°C) and 67.5°F (19.7°C). The move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 74.1°F (23.4°C) to a comfortable 67.5°F (19.7°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in South Bristol, Maine, with an average temperature fluctuating between 45°F (7.2°C) and 56.3°F (13.5°C). During the transition into October, South Bristol observes a decrease in the average high-temperature, falling from an enjoyable 67.5°F (19.7°C) in September to a moderate 56.3°F (13.5°C). Weather in October »

Weather in November

November, the last month of the autumn in South Bristol, is another chilly month, with an average temperature varying between 45.5°F (7.5°C) and 34.5°F (1.4°C). The transition into November indicates a reduction in the average high-temperature, down to a chilly 45.5°F (7.5°C) from October's refreshing 56.3°F (13.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in South Bristol, Maine, with an average temperature varying between 35.2°F (1.8°C) and 25.3°F (-3.7°C). The beginning of December involves a decrease in the average high-temperature, transitioning from a chilly 45.5°F (7.5°C) in November to a wintry 35.2°F (1.8°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in South Bristol?

January, on average, is the coldest month in South Bristol, Maine, registering a high temperature of 29.7°F (-1.3°C) and a low of 18°F (-7.8°C).

How many days does it rain in South Bristol?

In South Bristol, during the entire year, the rain falls for 142.1 days and collects up to 30.51" (775mm) of precipitation.

When does it snow in South Bristol?

Months with snowfall in South Bristol are January through May, November and December.

What is the snowiest month in South Bristol?

The month with the most snowfall is January, when snow falls for 9.2 days and typically aggregates up to 5.28" (134mm) of snow.

How much does it snow in South Bristol?

Throughout the year, in South Bristol, there are 40 snowfall days, and 20.08" (510mm) of snow is accumulated.

What is the month with the lowest UV index in South Bristol?

The months with the lowest UV index in South Bristol, Maine, are January through March, November and December, with an average maximum UV index of 2.

What are the months with the least sunshine in South Bristol?

The months with the least sunshine in South Bristol are February and December, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST) in South Bristol?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the most humid month in South Bristol?

June and July, with an average relative humidity of 82%, are most humid months in South Bristol.

When it does not snow in South Bristol?

In South Bristol, Maine, snow does not fall in June through October.

When are the longest days in South Bristol?

The month with the longest days in South Bristol is June, with an average of 15h and 24min of daylight.

What part of the year is the hottest in South Bristol?

Temperatures reach their maximum during July and August, recording an average high-temperature of 74.1°F (23.4°C).

When is the highest UV index in South Bristol?

July is the month with the highest UV index in South Bristol, with an average maximum UV index of 6.

What month has the most sunshine in South Bristol?

With an average of 10.3h of sunshine, August has the most sunshine of the year in South Bristol.

What is the driest month in South Bristol?

September is the month with the least rainfall. Rain falls for 10.8 days and accumulates 1.5" (38mm) of precipitation.

What is the least humid month in South Bristol?

The least humid month in South Bristol, Maine, is November, with an average relative humidity of 76%.

What is the rainiest month in South Bristol?

December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 3.5" (89mm) of precipitation.

What is the month with the shortest days in South Bristol?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

Average temperature
South Bristol, ME

Average temperature - South Bristol, ME

The warmest months (with the highest average high temperature) are July and August (74.1°F).
The month with the lowest average high temperature is January (29.7°F).

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure
South Bristol, ME

Average pressure - South Bristol, ME

The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
South Bristol, ME

Average wind speed - South Bristol, ME

The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity
South Bristol, ME

Average humidity - South Bristol, ME

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (76%).

Average rainfall
South Bristol, ME

Average rainfall - South Bristol, ME

The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days
South Bristol, ME

Average rainfall days - South Bristol, ME

The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is January (6.6 days).

Average snowfall
South Bristol, ME

Average snowfall - South Bristol, ME

The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
South Bristol, ME

Average snowfall days - South Bristol, ME

The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
South Bristol, ME

Average daylight / Average sunshine - South Bristol, ME

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

Average sunshine days
South Bristol, ME

Average sunshine days - South Bristol, ME

The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is April (11.7 days).

Average UV index
South Bristol, ME

Average UV index - South Bristol, ME

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average visibility
South Bristol, ME

Average visibility - South Bristol, ME

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

South Bristol, Maine, USA

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