Climate and monthly weather forecastBrightwood, MD
Climate and monthly weather forecast
Weather in January
January, like December, in Brightwood, Maryland, is a wintry winter month, with an average temperature varying between 28.4°F (-2°C) and 39.6°F (4.2°C). Brightwood's coldest month, January, registers temperatures that range from a high of 39.6°F (4.2°C) to a low of 28.4°F (-2°C). Weather in January »Weather in February
February, the last month of the winter in Brightwood, is a frosty month, with an average temperature ranging between min 30.7°F (-0.7°C) and max 43.2°F (6.2°C). The beginning of February reveals an average high-temperature of a frosty 43.2°F (6.2°C), showing minimal deviation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Brightwood, Maryland, with an average temperature ranging between min 37.8°F (3.2°C) and max 50.7°F (10.4°C). The shift from February to March introduces a subtle increase in the average high-temperature, moving from a chilly 43.2°F (6.2°C) to a fresh 50.7°F (10.4°C). Weather in March »Weather in April
April in Brightwood, Maryland, is an enjoyable spring month, with an average temperature varying between 47.5°F (8.6°C) and 62.8°F (17.1°C). April's arrival brings a temperature shift, moving from a cool 50.7°F (10.4°C) in March to a refreshing 62.8°F (17.1°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Brightwood, Maryland, with an average temperature fluctuating between 57.2°F (14°C) and 72.1°F (22.3°C). Brightwood's May weather shows an increase in high-temperatures, moving from April's comfortable 62.8°F (17.1°C) to an agreeable 72.1°F (22.3°C). Weather in May »Weather in June
June, the first month of the summer in Brightwood, is a moderately hot month, with an average temperature ranging between max 80.2°F (26.8°C) and min 65.7°F (18.7°C). The shift from May to June sees a slight increase in the average high-temperature, transitioning from an agreeable 72.1°F (22.3°C) to a warm 80.2°F (26.8°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Brightwood, Maryland, with an average temperature varying between 85.6°F (29.8°C) and 70.7°F (21.5°C). July is the warmest month, with the temperature often reaching an average high of 85.6°F (29.8°C) and an average low of 70.7°F (21.5°C). July's mean heat index is calculated to be a fiery hot 95°F (35°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Brightwood, Maryland, with an average temperature varying between 83.7°F (28.7°C) and 69.1°F (20.6°C). The advent of August brings an average high-temperature of a still warm 83.7°F (28.7°C), almost identical to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Brightwood, is still a warm month, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 63.3°F (17.4°C). Brightwood in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 83.7°F (28.7°C) to a still warm 77.4°F (25.2°C). Weather in September »Weather in October
October, like September, in Brightwood, Maryland, is another refreshing autumn month, with an average temperature varying between 52.9°F (11.6°C) and 65.5°F (18.6°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's warm 77.4°F (25.2°C) to an enjoyable 65.5°F (18.6°C). Weather in October »Weather in November
November, the last month of the autumn in Brightwood, is another cool month, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 41.4°F (5.2°C). The onset of November brings a small change in high-temperatures, falling from a refreshing 65.5°F (18.6°C) in October to a fresh 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 Brightwood, Maryland, with an average temperature varying between 45.5°F (7.5°C) and 34.7°F (1.5°C). December's onset brings a negligible change in high-temperatures, falling from a cool 53.8°F (12.1°C) in November to a chilly 45.5°F (7.5°C). Weather in December »Updated: Jun 4, 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
January, noted for its average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 28.4°F (-2°C), is considered the coldest month.
January, March, April and November, with an average relative humidity of 72%, are the least humid months.
In Brightwood, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.
January through April, November and December are months with snowfall in Brightwood.
January is the month with the most snowfall. Snow falls for 4.4 days and accumulates 2.05" (52mm) of snow.
Throughout the year, there are 14 snowfall days, and 6.14" (156mm) of snow is accumulated.
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brightwood.
With an average of 5.1h of sunshine, February has the least sunshine of the year.
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.
May is the most humid month, with an average relative humidity of 78%.
May through October are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June has the longest days of the year, with an average of 14h and 54min of daylight.
The warmest temperatures occur during July, when averages reach a peak of 85.6°F (29.8°C) and a low of 70.7°F (21.5°C).
With an average of 10.9h of sunshine, July has the most sunshine of the year.
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.
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.89" (48mm) of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, MD
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
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 18min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 54min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 12min
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
Brightwood, 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
Brightwood, 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
Brightwood, 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
Brightwood, 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).
