Climate and monthly weather forecastSouth Bristol, ME
Climate and monthly weather forecast
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
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
In South Bristol, during the entire year, the rain falls for 142.1 days and collects up to 30.51" (775mm) of precipitation.
Months with snowfall in South Bristol are January through May, November and December.
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.
Throughout the year, in South Bristol, there are 40 snowfall days, and 20.08" (510mm) of snow is accumulated.
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.
The months with the least sunshine in South Bristol are February and December, with an average of 4.6h of sunshine.
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.
June and July, with an average relative humidity of 82%, are most humid months in South Bristol.
In South Bristol, Maine, snow does not fall in June through October.
The month with the longest days in South Bristol is June, with an average of 15h and 24min of daylight.
Temperatures reach their maximum during July and August, recording an average high-temperature of 74.1°F (23.4°C).
July is the month with the highest UV index in South Bristol, with an average maximum UV index of 6.
With an average of 10.3h of sunshine, August has the most sunshine of the year in South Bristol.
September is the month with the least rainfall. Rain falls for 10.8 days and accumulates 1.5" (38mm) of precipitation.
The least humid month in South Bristol, Maine, is November, with an average relative humidity of 76%.
December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 3.5" (89mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 0min of daylight.
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 in January:
29.97"Hg - Average pressure in February:
29.96"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.01"Hg
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 in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.6mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.5mph - Average wind speed in December:
10mph
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
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 in January:
2.44" - Average rainfall in February:
2.32" - Average rainfall in March:
2.44" - Average rainfall in April:
3.07" - Average rainfall in May:
2.24" - Average rainfall in June:
2.48"
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 in January:
6.6 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
11 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
10.8 days
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 in January:
5.28" - Average snowfall in February:
4.45" - Average snowfall in March:
3.74" - Average snowfall in April:
1.54" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
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 in January:
9.2 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
8.5 days - Average snowfall days in April:
2.7 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
7 days
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 in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 6min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
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).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 0min - Average sunshine in June:
8h and 36min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 36min
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 in January:
16.7 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
14.5 days
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
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 cloud cover
South Bristol, ME
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 33).
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).
