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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 Marriottsville, Maryland, is an icy winter month, with temperature in the range of an average low of 25°F (-3.9°C) and an average high of 37.6°F (3.1°C). In Marriottsville, the month of January registers the lowest temperatures, averaging 37.6°F (3.1°C) at the peak and 25°F (-3.9°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Marriottsville, is also an icy month, with an average temperature ranging between min 27.3°F (-2.6°C) and max 41.4°F (5.2°C). Marriottsville's transition from January to February introduces an average high-temperature of a still icy 41.4°F (5.2°C), marking an insignificant variation from the 37.6°F (3.1°C). Weather in February »
Weather in March
March, the first month of the spring in Marriottsville, is a cool month, with an average temperature varying between 34.3°F (1.3°C) and 50°F (10°C). As Marriottsville, Maryland, enters March, the average high-temperature marginally increases from the an icy 41.4°F (5.2°C) of February to a cool 50°F (10°C). Weather in March »
Weather in April
April in Marriottsville, Maryland, is a comfortable spring month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 62.2°F (16.8°C). April brings a temperature increase, with average high-temperatures moving from March's fresh 50°F (10°C) to an enjoyable 62.2°F (16.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Marriottsville, Maryland, with an average temperature fluctuating between 54.1°F (12.3°C) and 71.8°F (22.1°C). Marriottsville sees an increase in the average high-temperature with the arrival of May, moving from April's refreshing 62.2°F (16.8°C) to a pleasant 71.8°F (22.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Marriottsville, Maryland, with an average temperature ranging between max 79.3°F (26.3°C) and min 62.1°F (16.7°C). June's arrival signals a modest temperature shift, moving from an agreeable 71.8°F (22.1°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Marriottsville, Maryland, with an average temperature varying between 66.7°F (19.3°C) and 84.7°F (29.3°C). Marriottsville records the warmest temperatures in July, averaging a high of 84.7°F (29.3°C) and a low of 66.7°F (19.3°C). The average heat index in July is appraised at a hot 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Marriottsville, is also a moderately hot month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 64.9°F (18.3°C). As Marriottsville steps into August, the average high-temperature is measured at a still warm 82.6°F (28.1°C), displaying minor differences from July's 84.7°F (29.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Marriottsville, Maryland, with temperature in the range of an average low of 59°F (15°C) and an average high of 75.9°F (24.4°C). With the arrival of September, Marriottsville notices a mild change in the average high-temperature, sliding from August's 82.6°F (28.1°C) to a still moderately hot 75.9°F (24.4°C). Weather in September »
Weather in October
October, like September, in Marriottsville, Maryland, is another enjoyable autumn month, with an average temperature fluctuating between 48.4°F (9.1°C) and 64.4°F (18°C). October comes with a decrease in the average high-temperature, falling from a moderately hot 75.9°F (24.4°C) in September to a comfortable 64.4°F (18°C). Weather in October »
Weather in November
November, the last month of the autumn in Marriottsville, is also a fresh month, with an average temperature fluctuating between 37.6°F (3.1°C) and 52.3°F (11.3°C). The shift to November brings a decrease in the average high-temperature, falling from an enjoyable 64.4°F (18°C) in October to a cool 52.3°F (11.3°C). Weather in November »
Weather in December
December, the first month of the winter in Marriottsville, is still a chilly month, with an average temperature ranging between min 31.5°F (-0.3°C) and max 43.5°F (6.4°C). December signifies a gentle decline in Marriottsville's average high-temperature, easing from a cool 52.3°F (11.3°C) in November to a frosty 43.5°F (6.4°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 37.6°F (3.1°C) and a low of 25°F (-3.9°C), January stands out as the coldest month.
How many days does it rain?
Throughout the year, there are 159 rainfall days, and 31.61" (803mm) of precipitation is accumulated.
When does it snow?
January through May, November and December are months with snowfall.
How much does it snow?
Throughout the year, there are 18.7 snowfall days, and 9.96" (253mm) of snow is accumulated.
What is the month with the least sunshine?
The months with the least sunshine are January and February, with an average of 4.8h of sunshine.
When is the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month?
February is the month with the least rainfall. Rain falls for 8.8 days and accumulates 1.97" (50mm) of precipitation.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 3.8 days and accumulates 2.8" (71mm) of snow.
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 are the least humid months?
April and July, with an average relative humidity of 74%, are the least humid months.
What is the most humid month?
The most humid month is May, with an average relative humidity of 79%.
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 it does not snow?
June through October are months without snowfall.
When are the longest days?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What part of the year is the hottest?
The warmest period is July, when temperatures fluctuate between an average high of 84.7°F (29.3°C) and a low of 66.7°F (19.3°C).
What month has the most sunshine?
With an average of 10.6h of sunshine, July has the most sunshine of the year.
What is the wettest month?
August is the month with the most rainfall. Rain falls for 16.8 days and accumulates 3.9" (99mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Marriottsville, 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 (37.6°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure
Marriottsville, 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:
30.06"Hg - Average pressure in October:
30.04"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
Marriottsville, MD
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.7mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.2mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity
Marriottsville, MD
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall
Marriottsville, MD
- Average rainfall in January:
2.05" - Average rainfall in February:
1.97" - Average rainfall in March:
2.28" - Average rainfall in April:
2.48" - Average rainfall in May:
3.23" - Average rainfall in June:
2.64"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days
Marriottsville, MD
- Average rainfall days in January:
8.6 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
13.9 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.6 days).
Average snowfall
Marriottsville, MD
- Average snowfall in January:
2.44" - Average snowfall in February:
2.48" - Average snowfall in March:
2.8" - Average snowfall in April:
0.31" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Marriottsville, MD
- Average snowfall days in January:
5.6 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.2 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:
0.5 days - Average snowfall days in December:
3.2 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Marriottsville, 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 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:
4h and 5min - 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 3min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days
Marriottsville, MD
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
13.9 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
12 days - Average sunshine days in September:
14.6 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (11.2 days).
Average UV index
Marriottsville, 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
Marriottsville, MD
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Marriottsville, MD
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Marriottsville, Maryland, USA
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