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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, in Charlestown, Massachusetts, is a wintry winter month, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 33.8°F (1°C). Charlestown reaches its lowest average temperatures in January, measuring 33.8°F (1°C) at the peak and 22.5°F (-5.3°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Charlestown, Massachusetts, with an average temperature fluctuating between 36.5°F (2.5°C) and 23.4°F (-4.8°C). February records an average high-temperature of a still cold 36.5°F (2.5°C), indicating a minor variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Charlestown, is a frosty month, with an average temperature ranging between max 43.3°F (6.3°C) and min 30.6°F (-0.8°C). With the transition into March, Charlestown experiences a subtle uplift in average high-temperatures, adjusting from an icy 36.5°F (2.5°C) in February to a frosty 43.3°F (6.3°C). Weather in March »
Weather in April
April in Charlestown, Massachusetts, is a mild spring month, with an average temperature ranging between max 55.6°F (13.1°C) and min 40.1°F (4.5°C). With the onset of April, Charlestown's average high-temperature experiences a rise, moving from March's chilly 43.3°F (6.3°C) to a refreshing 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Charlestown, Massachusetts, with temperature in the range of an average low of 49.8°F (9.9°C) and an average high of 66.7°F (19.3°C). Charlestown's weather shows a temperature rise with the arrival of May, moving from 55.6°F (13.1°C) in April to a still refreshing 66.7°F (19.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Charlestown, Massachusetts, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 74.5°F (23.6°C). With the onset of June, Charlestown's average high-temperature experiences a slight rise, moving from May's refreshing 66.7°F (19.3°C) to a warm 74.5°F (23.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Charlestown, Massachusetts, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 64.8°F (18.2°C). July is Charlestown's warmest month, registering average high temperatures of 81.9°F (27.7°C) and lows of 64.8°F (18.2°C). For most parts of July, the heat index is computed to be a tropical 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Charlestown, is also a moderately hot month, with an average temperature fluctuating between 63.5°F (17.5°C) and 80.4°F (26.9°C). Entering August, the average high-temperature is recorded at a still warm 80.4°F (26.9°C), exhibiting a minimal shift from July's 81.9°F (27.7°C). Weather in August »
Weather in September
September, the first month of the autumn in Charlestown, is also an agreeable month, with an average temperature fluctuating between 72.9°F (22.7°C) and 56.8°F (13.8°C). September is marked by a subtle drop in average high-temperatures, transitioning from a moderately hot 80.4°F (26.9°C) in August to an agreeable 72.9°F (22.7°C). Weather in September »
Weather in October
October, like September, in Charlestown, Massachusetts, is another comfortable autumn month, with an average temperature varying between 61.2°F (16.2°C) and 47.7°F (8.7°C). Charlestown's October weather features a mild decline in high-temperatures, reducing from an agreeable 72.9°F (22.7°C) in September to a comfortable 61.2°F (16.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Charlestown, Massachusetts, with an average temperature fluctuating between 49.5°F (9.7°C) and 37.4°F (3°C). Charlestown's progression into November includes a drop in the average high-temperature, from a comfortable 61.2°F (16.2°C) in October to a chilly 49.5°F (9.7°C). Weather in November »
Weather in December
December, the first month of the winter in Charlestown, is still a cold month, with an average temperature varying between 29.3°F (-1.5°C) and 39.6°F (4.2°C). As Charlestown enters December, the average high-temperature decreases from the a chilly 49.5°F (9.7°C) of November to a cold 39.6°F (4.2°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Charlestown?
In Charlestown, the average lowest temperatures are observed in January, with a high of 33.8°F (1°C) and a low of 22.5°F (-5.3°C).
How many days does it rain in Charlestown?
Throughout the year, in Charlestown, Massachusetts, there are 47.8 rainfall days, and 4.13" (105mm) of precipitation is accumulated.
When does it snow in Charlestown?
January through May, November and December are months with snowfall in Charlestown, Massachusetts.
How many days does it snow in Charlestown?
In Charlestown, during the entire year, snow falls for 13.2 days and aggregates up to 2.17" (55mm) of snow.
What are the months with the lowest UV index in Charlestown?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Charlestown, Massachusetts.
What is the most humid month in Charlestown?
The most humid month in Charlestown is February, with an average relative humidity of 78%.
What is the month with the least sunshine in Charlestown?
The month with the least sunshine in Charlestown is February, with an average of 4.6h of sunshine.
When is Daylight Saving Time (DST) in Charlestown?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Charlestown, 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 in Charlestown?
The least humid month is April, with an average relative humidity of 69%.
When it does not snow in Charlestown?
June through October are months without snowfall in Charlestown.
When are the longest days in Charlestown?
June has the longest days of the year in Charlestown, Massachusetts, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Charlestown?
The months with the highest UV index in Charlestown are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in Charlestown?
With an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64.8°F (18.2°C), July is the warmest month in Charlestown.
What month has the most sunshine in Charlestown?
August has the most sunshine of the year in Charlestown, with an average of 10.5h of sunshine.
What is the driest month in Charlestown?
The month with the least rainfall in Charlestown is September, when the rain falls for 2.9 days and typically collects 0.12" (3mm) of precipitation.
What is the wettest month in Charlestown?
November is the month with the most rainfall in Charlestown, Massachusetts. Rain falls for 3.3 days and accumulates 0.55" (14mm) of precipitation.
What is the snowiest month in Charlestown?
December is the month with the most snowfall in Charlestown. Snow falls for 2.4 days and accumulates 0.71" (18mm) of snow.
What is the month with the shortest days in Charlestown?
The month with the shortest days in Charlestown, Massachusetts, is December, with an average of 9h and 6min of daylight.
Average temperature
Charlestown, MA
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure
Charlestown, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"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:
29.94"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Charlestown, MA
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Charlestown, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (69%).
Average rainfall
Charlestown, MA
- Average rainfall in January:
0.35" - Average rainfall in February:
0.31" - Average rainfall in March:
0.35" - Average rainfall in April:
0.47" - Average rainfall in May:
0.28" - Average rainfall in June:
0.35"
- Average rainfall in July:
0.28" - Average rainfall in August:
0.24" - Average rainfall in September:
0.12" - Average rainfall in October:
0.39" - Average rainfall in November:
0.55" - Average rainfall in December:
0.43"
The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.12").
Average rainfall days
Charlestown, MA
- Average rainfall days in January:
2.9 days - Average rainfall days in February:
3 days - Average rainfall days in March:
4.8 days - Average rainfall days in April:
5.9 days - Average rainfall days in May:
4.3 days - Average rainfall days in June:
4.2 days
- Average rainfall days in July:
5 days - Average rainfall days in August:
4.4 days - Average rainfall days in September:
2.9 days - Average rainfall days in October:
4 days - Average rainfall days in November:
3.3 days - Average rainfall days in December:
3.1 days
The month with the highest number of rainy days is April (5.9 days).
The months with the least rainy days are January and September (2.9 days).
Average snowfall
Charlestown, MA
- Average snowfall in January:
0.2" - Average snowfall in February:
0.43" - Average snowfall in March:
0.59" - Average snowfall in April:
0.04" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Charlestown, MA
- Average snowfall days in January:
3.4 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
2.7 days - Average snowfall days in April:
0.6 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:
0.1 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2.4 days
The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Charlestown, 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 0min - 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 6min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
4h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 3min - Average sunshine in September:
8h and 3min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Charlestown, MA
- Average sunshine days in January:
25 days - Average sunshine days in February:
23.3 days - Average sunshine days in March:
25 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.3 days - Average sunshine days in June:
23.4 days
- Average sunshine days in July:
22.8 days - Average sunshine days in August:
24.1 days - Average sunshine days in September:
24.8 days - Average sunshine days in October:
25 days - Average sunshine days in November:
24.4 days - Average sunshine days in December:
25.5 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is July (22.8 days).
Average UV index
Charlestown, MA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Charlestown, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Charlestown, MA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Charlestown, Massachusetts, USA
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