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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, is an icy winter month in Chartwood, Maryland, with an average temperature ranging between max 39.6°F (4.2°C) and min 28.4°F (-2°C). January is the coldest month, exhibiting average temperatures of 39.6°F (4.2°C) at the peak and 28.4°F (-2°C) at the base. Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Chartwood, Maryland, with an average temperature varying between 30.7°F (-0.7°C) and 43.2°F (6.2°C). Chartwood experiences a transition to a chilly 43.2°F (6.2°C) in average high-temperatures with the arrival of February, not greatly differing from January's 39.6°F (4.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Chartwood, Maryland, with an average temperature varying between 37.8°F (3.2°C) and 50.7°F (10.4°C). Chartwood's transition into March is noticed by a slight rise in the average high-temperature, advancing from a chilly 43.2°F (6.2°C) in February to a fresh 50.7°F (10.4°C). Weather in March »
Weather in April
April in Chartwood, Maryland, is an enjoyable spring month, with an average temperature varying between 62.8°F (17.1°C) and 47.5°F (8.6°C). A rise in the average high-temperature is observed during April, moving from a fresh 50.7°F (10.4°C) in March to a comfortable 62.8°F (17.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Chartwood, Maryland, with an average temperature ranging between min 57.2°F (14°C) and max 72.1°F (22.3°C). The average high-temperature increases in May, moving from a refreshing 62.8°F (17.1°C) in April to a pleasant 72.1°F (22.3°C). Weather in May »
Weather in June
June, the first month of the summer in Chartwood, is a moderately hot month, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 80.2°F (26.8°C). As Chartwood welcomes June, the average high-temperature sees a modest rise, transitioning from a pleasant 72.1°F (22.3°C) in May to a warm 80.2°F (26.8°C). Weather in June »
Weather in July
July, like June, in Chartwood, Maryland, is another warm summer month, with temperature in the range of an average low of 70.7°F (21.5°C) and an average high of 85.6°F (29.8°C). In Chartwood, temperatures reach their average annual highs in July, measuring 85.6°F (29.8°C) and a minimum average of 70.7°F (21.5°C). The heat index for July is computed to be a very hot 95°F (35°C). Weather in July »
Weather in August
August, the last month of the summer in Chartwood, is another warm month, with an average temperature fluctuating between 83.7°F (28.7°C) and 69.1°F (20.6°C). Chartwood experiences a recorded average high-temperature of a still warm 83.7°F (28.7°C) in August, closely aligned with July's 85.6°F (29.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Chartwood, Maryland, with an average temperature varying between 63.3°F (17.4°C) and 77.4°F (25.2°C). Chartwood's weather subtly changes with the onset of September, barely falling from 83.7°F (28.7°C) in August to a still warm 77.4°F (25.2°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Chartwood, Maryland, with an average temperature fluctuating between 65.5°F (18.6°C) and 52.9°F (11.6°C). A shift in the average high-temperature occurs in October, reducing from a warm 77.4°F (25.2°C) in September to a comfortable 65.5°F (18.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Chartwood, Maryland, with an average temperature fluctuating between 41.4°F (5.2°C) and 53.8°F (12.1°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's refreshing 65.5°F (18.6°C) to a cool 53.8°F (12.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Chartwood, Maryland, with an average temperature ranging between min 34.7°F (1.5°C) and max 45.5°F (7.5°C). The shift from November to December includes a small decrease in the average high-temperature, from a fresh 53.8°F (12.1°C) to a chilly 45.5°F (7.5°C). Weather in December »
Updated: Jun 8, 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?
The month of January sees the average lowest temperatures, reaching 39.6°F (4.2°C) at the peak and 28.4°F (-2°C) at the low.
What are the least humid months?
The months with the lowest humidity are January, March, April and November, with an average relative humidity of 72%.
How many days does it rain?
Throughout the year, there are 155.7 rainfall days, and 31.22" (793mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 4.4 days and accumulates 2.05" (52mm) of snow.
How many days does it snow?
Throughout the year, there are 14 snowfall days, and 6.14" (156mm) of snow is accumulated.
What is the month with the lowest UV index?
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the month with the least sunshine in Chartwood?
With an average of 5.1h of sunshine, February has the least sunshine of the year.
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 most humid month?
The most humid month is May, with an average relative humidity of 78%.
When it does not snow?
In Chartwood, snow does not fall in May through October.
When is the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What is the warmest month?
With average temperatures fluctuating between a high of 85.6°F (29.8°C) and a low of 70.7°F (21.5°C), July stands out as the warmest month.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.9h of sunshine.
What is the wettest month?
The month with the most rainfall is August, when the rain falls for 13.9 days and typically aggregates up to 3.54" (90mm) of precipitation.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.
What is the month with the shortest days in Chartwood?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Chartwood, MD
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Chartwood, MD
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"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:
29.97"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:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Chartwood, MD
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
7mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Chartwood, MD
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).
Average rainfall
Chartwood, MD
- Average rainfall in January:
2.01" - Average rainfall in February:
2.36" - Average rainfall in March:
2.48" - Average rainfall in April:
2.6" - Average rainfall in May:
2.87" - Average rainfall in June:
2.6"
- Average rainfall in July:
3.23" - Average rainfall in August:
3.54" - Average rainfall in September:
1.89" - Average rainfall in October:
2.64" - Average rainfall in November:
2.17" - Average rainfall in December:
2.83"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days
Chartwood, MD
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
13.9 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
11.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).
Average snowfall
Chartwood, MD
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Chartwood, MD
- Average snowfall days in January:
4.4 days - Average snowfall days in February:
4.2 days - Average snowfall days in March:
2.4 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 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:
0.5 days - Average snowfall days in December:
2.4 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Chartwood, MD
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - 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 1min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days
Chartwood, MD
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Chartwood, 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, November and December (UV index 2).
Average cloud cover
Chartwood, MD
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Chartwood, MD
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).
Chartwood, Maryland, USA
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