Expand
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 sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is a wintry winter month in Charlestown, Maryland, with an average temperature ranging between min 26.1°F (-3.3°C) and max 37.9°F (3.3°C). January, having an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 26.1°F (-3.3°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Charlestown, is also a wintry month, with temperature in the range of an average low of 28.6°F (-1.9°C) and an average high of 41.7°F (5.4°C). The transition into February is marked with an average high-temperature of a still cold 41.7°F (5.4°C), showing an insignificant shift from January's 37.9°F (3.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Charlestown, Maryland, with temperature in the range of an average high of 50°F (10°C) and an average low of 35.1°F (1.7°C). In Charlestown, the average high-temperature in March slightly increases from a wintry 41.7°F (5.4°C) in February to a cool 50°F (10°C). Weather in March »
Weather in April
April is a refreshing spring month in Charlestown, Maryland, with temperature in the range of an average high of 61.9°F (16.6°C) and an average low of 45°F (7.2°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a cool 50°F (10°C) to an enjoyable 61.9°F (16.6°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Charlestown, Maryland, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 71.6°F (22°C). An upsurge in temperatures occurs as April gives way to May, with average highs shifting from an enjoyable 61.9°F (16.6°C) to an agreeable 71.6°F (22°C). Weather in May »
Weather in June
June, the first month of the summer in Charlestown, is a moderately hot month, with an average temperature ranging between max 79.5°F (26.4°C) and min 62.4°F (16.9°C). In Charlestown, the average high-temperature in June slightly rises, from an agreeable 71.6°F (22°C) in May, to a warm 79.5°F (26.4°C). Weather in June »
Weather in July
July, like June, in Charlestown, Maryland, is another warm summer month, with an average temperature varying between 67.6°F (19.8°C) and 84.7°F (29.3°C). Charlestown's July weather, with an average high temperature of 84.7°F (29.3°C) and an average low temperature of 67.6°F (19.8°C), tends to be the warmest of the year. The heat index value for July is evaluated at a fiery hot 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Charlestown, Maryland, with temperature in the range of an average high of 82.8°F (28.2°C) and an average low of 65.7°F (18.7°C). August experiences an average high-temperature of a still moderately hot 82.8°F (28.2°C), barely different from July's 84.7°F (29.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Charlestown, Maryland, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 59.9°F (15.5°C). The start of September involves a subtle temperature drop, shifting from 82.8°F (28.2°C) in August to a still warm 76.6°F (24.8°C). Weather in September »
Weather in October
October, like September, in Charlestown, Maryland, is another refreshing autumn month, with an average temperature varying between 64.9°F (18.3°C) and 50.2°F (10.1°C). October weather is marked by a drop in the average high-temperature, falling from a moderately hot 76.6°F (24.8°C) in September to a comfortable 64.9°F (18.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Charlestown, Maryland, with an average temperature varying between 39.2°F (4°C) and 53.1°F (11.7°C). A shift in the average high-temperature occurs in November, reducing from a comfortable 64.9°F (18.3°C) in October to a fresh 53.1°F (11.7°C). Weather in November »
Weather in December
December, the first month of the winter in Charlestown, is still a chilly month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 33.1°F (0.6°C). December witnesses a gentle descent in average high-temperature, descending from November's cool 53.1°F (11.7°C) to a chilly 44.1°F (6.7°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Charlestown?
The coldest time of the year in Charlestown, Maryland, is January, with temperatures averaging a high of 37.9°F (3.3°C) and a low of 26.1°F (-3.3°C).
What is the driest month in Charlestown?
The month with the least rainfall in Charlestown, Maryland, is January, when the rain falls for 7.8 days and typically collects 1.85" (47mm) of precipitation.
How much does it rain in Charlestown?
In Charlestown, during the entire year, the rain falls for 150.3 days and collects up to 29.25" (743mm) of precipitation.
When does it snow in Charlestown?
January through March, May, November and December are months with snowfall.
When does it snow the most in Charlestown?
The month with the most snowfall is January, when snow falls for 4.4 days and typically aggregates up to 2.24" (57mm) of snow.
How much does it snow in Charlestown?
Throughout the year, there are 13.1 snowfall days, and 6.89" (175mm) of snow is accumulated.
When is the lowest UV index in Charlestown?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the month with the coldest ocean in Charlestown?
February is the month with the coldest seawater, with an average ocean temperature of 41°F (5°C).
What is the month with the least sunshine in Charlestown?
February has the least sunshine of the year in Charlestown, Maryland, with an average of 4.9h 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, Maryland, 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?
With an average relative humidity of 74%, April is the least humid month.
When it does not snow in Charlestown?
April, June through October are months without snowfall.
What are the most humid months in Charlestown?
The months with the highest humidity in Charlestown are May and June, with an average relative humidity of 79%.
What is the month with the highest UV index in Charlestown?
The months with the highest UV index in Charlestown, Maryland, are May through August, with an average maximum UV index of 6.
When are the longest days in Charlestown?
The month with the longest days in Charlestown is June, with an average of 14h and 54min of daylight.
What is the hottest time of year in Charlestown?
In Charlestown, July is known for its average highest temperatures, reaching a high of 84.7°F (29.3°C) and a low of 67.6°F (19.8°C).
What month has the most sunshine in Charlestown?
With an average of 10.7h of sunshine, July has the most sunshine of the year in Charlestown.
What is the rainiest month in Charlestown?
The month with the most rainfall in Charlestown, Maryland, is August, when the rain falls for 15.6 days and typically aggregates up to 3.86" (98mm) of precipitation.
What month is the ocean warmest in Charlestown?
With an average ocean temperature of 76.3°F (24.6°C), August is the month with the warmest seawater.
What is the month with the shortest days in Charlestown?
December has the shortest days of the year in Charlestown, Maryland, with an average of 9h and 24min of daylight.
Average temperature
Charlestown, MD
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Charlestown, MD
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Charlestown, MD
- Average wind speed in January:
8.8mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.8mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.7mph - Average wind speed in December:
8.1mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Charlestown, MD
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall
Charlestown, MD
- Average rainfall in January:
1.85" - Average rainfall in February:
1.89" - Average rainfall in March:
2.17" - Average rainfall in April:
2.17" - Average rainfall in May:
2.68" - Average rainfall in June:
2.6"
- Average rainfall in July:
3.43" - Average rainfall in August:
3.86" - Average rainfall in September:
2.05" - Average rainfall in October:
2.17" - Average rainfall in November:
2.01" - Average rainfall in December:
2.4"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days
Charlestown, MD
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Charlestown, MD
The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days
Charlestown, MD
- Average snowfall days in January:
4.4 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
1.7 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).
Average sea temperature
Charlestown, MD
The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).
Average daylight / Average sunshine
Charlestown, MD
- Average daylight in January:
9h and 5min - 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 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days
Charlestown, MD
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.9 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.6 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
18.9 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.6 days).
Average UV index
Charlestown, MD
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Charlestown, MD
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Charlestown, MD
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Charlestown, Maryland, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
