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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, the same as December, in Charlton, Massachusetts, is another subzero cold winter month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 19.6°F (-6.9°C). Temperature readings reach their annual highs in January, averaging 31.5°F (-0.3°C) and a minimum average of 19.6°F (-6.9°C). Weather in January »
Weather in February
February, the last month of the winter in Charlton, is an icy month, with an average temperature varying between 35.1°F (1.7°C) and 20.7°F (-6.3°C). The shift into February reveals an average high-temperature of a cold 35.1°F (1.7°C), closely mirroring January's climate. Weather in February »
Weather in March
The first month of the spring, March, is still a cold month in Charlton, Massachusetts, with temperature in the range of an average high of 42.4°F (5.8°C) and an average low of 28.2°F (-2.1°C). In Charlton, the average high-temperature in March slightly rises, from a cold 35.1°F (1.7°C) in February, to a still icy 42.4°F (5.8°C). Weather in March »
Weather in April
April in Charlton, Massachusetts, is a mild spring month, with an average temperature fluctuating between 38.1°F (3.4°C) and 55.6°F (13.1°C). As April arrives, a rise in the average high-temperature is observed, moving from a cold 42.4°F (5.8°C) in March to a mild 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Charlton, Massachusetts, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 48°F (8.9°C). With the onset of May, Charlton's average high-temperature sees a rise, moving from April's mild 55.6°F (13.1°C) to a still refreshing 67.1°F (19.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Charlton, Massachusetts, with an average temperature varying between 55°F (12.8°C) and 74.3°F (23.5°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's comfortable 67.1°F (19.5°C) to a warm 74.3°F (23.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Charlton, Massachusetts, with an average temperature ranging between min 61.7°F (16.5°C) and max 81.3°F (27.4°C). Charlton witnesses the warmest weather in July, with temperatures averaging a high of 81.3°F (27.4°C) and a low of 61.7°F (16.5°C). July's average heat index is estimated at a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Charlton, is also a moderately hot month, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 60.4°F (15.8°C). As July transitions into August, the average high-temperature rests at a still warm 79.5°F (26.4°C), maintaining a close resemblance to the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Charlton, Massachusetts, with an average temperature varying between 72°F (22.2°C) and 53.8°F (12.1°C). September marks a gentle change in average high-temperature, declining from August's moderately hot 79.5°F (26.4°C) to an agreeable 72°F (22.2°C). Weather in September »
Weather in October
October, the same as September, in Charlton, Massachusetts, is another mild autumn month, with an average temperature ranging between min 45.1°F (7.3°C) and max 59.9°F (15.5°C). October's onset corresponds with a shift in the average high-temperature, moving from an agreeable 72°F (22.2°C) in September to a refreshing 59.9°F (15.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Charlton, Massachusetts, with an average temperature varying between 47.3°F (8.5°C) and 34.5°F (1.4°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a mild 59.9°F (15.5°C) to a frosty 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Charlton, Massachusetts, with an average temperature ranging between max 37.2°F (2.9°C) and min 27°F (-2.8°C). As November transitions to December, the average high-temperature falls from a chilly 47.3°F (8.5°C) to a cold 37.2°F (2.9°C). Weather in December »
Updated: Jul 7, 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 month is the coldest?
With average temperatures fluctuating between a high of 31.5°F (-0.3°C) and a low of 19.6°F (-6.9°C), January stands out as the coldest month in Charlton.
How many days does it rain?
Throughout the year, there are 151.1 rainfall days, and 31.26" (794mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Charlton, during the entire year, snow falls for 37.7 days and aggregates up to 20.59" (523mm) of snow.
What are the months with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month?
With an average relative humidity of 81%, February is the most humid month.
When does it snow the most?
The months with the most snowfall are February and March, with an average 5.08" (129mm) of accumulated snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.5h of sunshine.
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?
April is the least humid month, with an average relative humidity of 72%.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
When is the highest UV index?
The months with the highest UV index in Charlton are June and July, with an average maximum UV index of 6.
What is the warmest month?
July temperatures tend to peak at an average high of 81.3°F (27.4°C) and dip to a low of 61.7°F (16.5°C).
What month has the most sunshine in Charlton?
The month with the most sunshine is August, with an average of 10h of sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 12.4 days and accumulates 1.81" (46mm) of precipitation.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 10.9 days and typically aggregates up to 3.11" (79mm) of precipitation.
What is the month with the shortest days in Charlton?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Charlton, MA
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure
Charlton, MA
- Average pressure in January:
30.02"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Charlton, MA
- Average wind speed in January:
9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.4mph - Average wind speed in May:
7mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.5mph - Average wind speed in November:
8mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Charlton, MA
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Charlton, MA
- Average rainfall in January:
2.44" - Average rainfall in February:
2.28" - Average rainfall in March:
2.76" - Average rainfall in April:
2.91" - Average rainfall in May:
2.44" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.52" - Average rainfall in September:
1.81" - Average rainfall in October:
2.76" - Average rainfall in November:
2.83" - Average rainfall in December:
3.11"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days
Charlton, MA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
10 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall
Charlton, MA
- Average snowfall in January:
3.58" - Average snowfall in February:
5.08" - Average snowfall in March:
5.08" - Average snowfall in April:
1.38" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The months with the highest snowfall are February and March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Charlton, MA
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
9 days - Average snowfall days in March:
9.1 days - Average snowfall days in April:
1.6 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:
0.5 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is March (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Charlton, MA
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 3min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 1min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Charlton, MA
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
13.4 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (12.9 days).
Average UV index
Charlton, MA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Charlton, MA
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility
Charlton, MA
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Charlton, Massachusetts, USA
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