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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another subzero cold winter month in Sumner, Maine, with an average temperature varying between 23.7°F (-4.6°C) and 10°F (-12.2°C). January is the coldest month, exhibiting average temperatures of 23.7°F (-4.6°C) at the peak and 10°F (-12.2°C) at the base. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Sumner, Maine, with an average temperature varying between 11.8°F (-11.2°C) and 26.4°F (-3.1°C). The arrival of February coincides with an average high-temperature of a still subzero cold 26.4°F (-3.1°C), indicating a minimal shift from January's 23.7°F (-4.6°C). Weather in February »
Weather in March
March, the first month of the spring in Sumner, is a wintry month, with an average temperature varying between 19.6°F (-6.9°C) and 34.2°F (1.2°C). The shift from February to March sees a slight increase in the average high-temperature, transitioning from a freezing cold 26.4°F (-3.1°C) to an icy 34.2°F (1.2°C). Weather in March »
Weather in April
April is a chilly spring month in Sumner, Maine, with temperature in the range of an average low of 30.9°F (-0.6°C) and an average high of 47.7°F (8.7°C). Sumner's weather in April shows a rise in the average high-temperature, moving up from March's cold 34.2°F (1.2°C) to a frosty 47.7°F (8.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Sumner, Maine, with an average temperature varying between 62.6°F (17°C) and 41.9°F (5.5°C). In Sumner, the average high-temperature in May soars, from a frosty 47.7°F (8.7°C) in April, to a refreshing 62.6°F (17°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Sumner, Maine, with an average temperature varying between 70°F (21.1°C) and 48.7°F (9.3°C). The transition from May to June brings a subtle temperature rise, with average high-temperatures increasing from a refreshing 62.6°F (17°C) to an agreeable 70°F (21.1°C). Weather in June »
Weather in July
July is a warm summer month in Sumner, Maine, with temperature in the range of an average high of 76.8°F (24.9°C) and an average low of 55.4°F (13°C). The warmest month is July, with an average high-temperature of 76.8°F (24.9°C) and an average low-temperature of 55.4°F (13°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Sumner, Maine, with an average temperature ranging between max 75.6°F (24.2°C) and min 53.4°F (11.9°C). As August takes its course, Sumner's average high-temperature registers at a still moderately hot 75.6°F (24.2°C), closely aligning with the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Sumner, Maine, with an average temperature fluctuating between 47.3°F (8.5°C) and 68°F (20°C). With the commencement of September, Sumner records a moderate temperature decline, with the average high easing from August's moderately hot 75.6°F (24.2°C) to an agreeable 68°F (20°C). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Sumner, Maine, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 39°F (3.9°C). The transition into October indicates a reduction in the average high-temperature, down to a fresh 54°F (12.2°C) from September's agreeable 68°F (20°C). Weather in October »
Weather in November
November, the last month of the autumn in Sumner, is also a wintry month, with an average temperature varying between 40.5°F (4.7°C) and 28.8°F (-1.8°C). November ushers in a slight temperature change, with average high-temperatures reducing from October's cool 54°F (12.2°C) to an icy 40.5°F (4.7°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Sumner, Maine, with an average temperature fluctuating between 29.1°F (-1.6°C) and 19°F (-7.2°C). The commencement of December involves a temperature shift, with the average high-temperature dropping from a wintry 40.5°F (4.7°C) in November to a freezing cold 29.1°F (-1.6°C). Weather in December »
Updated: Jul 28, 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
What is the coldest month?
Temperature records mark January as the coldest month, with highs averaging 23.7°F (-4.6°C) and lows at 10°F (-12.2°C).
What are the most humid months?
January through March, with an average relative humidity of 86%, are most humid months.
How many days does it rain?
Throughout the year, there are 146.3 rainfall days, and 28.31" (719mm) of precipitation is accumulated.
When does it snow in Sumner?
January through May, October through December are months with snowfall.
How many days does it snow?
Throughout the year, there are 69.3 snowfall days, and 48.15" (1223mm) of snow is accumulated.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 15.3 days and typically aggregates up to 12.28" (312mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4h of sunshine.
When is the lowest UV index?
February and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST)?
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 least humid month?
May and November, with an average relative humidity of 76%, are the least humid months.
When it does not snow?
June through September are months without snowfall in Sumner.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 5.
What month is the hottest?
July is the warmest month, with an average high-temperature of 76.8°F (24.9°C) and an average low-temperature of 55.4°F (13°C).
What is the driest month?
July is the month with the least rainfall. Rain falls for 14.8 days and accumulates 1.85" (47mm) of precipitation.
What month has the most sunshine?
August has the most sunshine of the year, with an average of 9.7h of sunshine.
What is the wettest month?
The month with the most rainfall is October, when the rain falls for 14.1 days and typically aggregates up to 3.31" (84mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Sumner, ME
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure
Sumner, ME
- Average pressure in January:
29.98"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.98"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:
30"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.02"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Sumner, ME
- Average wind speed in January:
6.5mph - Average wind speed in February:
6.5mph - Average wind speed in March:
6.8mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.8mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity
Sumner, ME
The months with the highest relative humidity are January, February and March (86%).
The months with the lowest relative humidity are May and November (76%).
Average rainfall
Sumner, ME
- Average rainfall in January:
2.09" - Average rainfall in February:
2.13" - Average rainfall in March:
2.05" - Average rainfall in April:
3.11" - Average rainfall in May:
2.17" - Average rainfall in June:
2.76"
- Average rainfall in July:
1.85" - Average rainfall in August:
2.13" - Average rainfall in September:
1.89" - Average rainfall in October:
3.31" - Average rainfall in November:
2.32" - Average rainfall in December:
2.52"
The wettest month (with the highest rainfall) is October (3.31").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days
Sumner, ME
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
8.2 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
11 days - Average rainfall days in October:
14.1 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (8.2 days).
Average snowfall
Sumner, ME
- Average snowfall in January:
9.41" - Average snowfall in February:
12.28" - Average snowfall in March:
7.83" - Average snowfall in April:
5.98" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is February (12.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sumner, ME
- Average snowfall days in January:
14.5 days - Average snowfall days in February:
15.3 days - Average snowfall days in March:
13.8 days - Average snowfall days in April:
5.8 days - Average snowfall days in May:
0.4 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:
1.2 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
12.5 days
The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sumner, ME
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 1min - Average sunshine in April:
6h and 5min - Average sunshine in May:
7h and 4min - Average sunshine in June:
8h and 2min
- Average sunshine in July:
9h and 3min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days
Sumner, ME
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
11.6 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
13.6 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
15.5 days - Average sunshine days in December:
13.8 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (11.3 days).
Average UV index
Sumner, ME
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover
Sumner, ME
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 40).
Average visibility
Sumner, ME
The months with the highest visibility are May, June, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, July, August and September (4mi).
Sumner, Maine, USA
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