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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 Riverdale Park, Maryland, is an icy winter month, with an average temperature ranging between min 27.7°F (-2.4°C) and max 39.9°F (4.4°C). January, having an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 27.7°F (-2.4°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Riverdale Park, Maryland, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 30°F (-1.1°C). As Riverdale Park transitions into February, the average high-temperature stands at a frosty 44.2°F (6.8°C), offering little variation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Riverdale Park, Maryland, with an average temperature ranging between max 52.3°F (11.3°C) and min 37.4°F (3°C). Riverdale Park's transition into March is noticed by a slight rise in the average high-temperature, advancing from a frosty 44.2°F (6.8°C) in February to a fresh 52.3°F (11.3°C). Weather in March »
Weather in April
April in Riverdale Park, Maryland, is a refreshing spring month, with an average temperature varying between 64.8°F (18.2°C) and 47.3°F (8.5°C). The start of April brings a shift in the average high-temperature, increasing from March's fresh 52.3°F (11.3°C) to a comfortable 64.8°F (18.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Riverdale Park, Maryland, with an average temperature varying between 57°F (13.9°C) and 73.9°F (23.3°C). Riverdale Park sees a rise in temperature during May, with average high-temperatures transitioning from a comfortable 64.8°F (18.2°C) in April to a moderately hot 73.9°F (23.3°C). Weather in May »
Weather in June
June, the first month of the summer in Riverdale Park, is also a moderately hot month, with an average temperature varying between 64.6°F (18.1°C) and 81.9°F (27.7°C). The transition from May to June brings a subtle temperature rise, with average high-temperatures increasing from 73.9°F (23.3°C) to a still moderately hot 81.9°F (27.7°C). Weather in June »
Weather in July
July in Riverdale Park, Maryland, is a hot summer month, with an average temperature fluctuating between 70°F (21.1°C) and 87.4°F (30.8°C). In Riverdale Park, temperatures reach their average annual highs in July, measuring 87.4°F (30.8°C) and a minimum average of 70°F (21.1°C). The average heat index in July is evaluated at a sweltering 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Riverdale Park, is also a moderately hot month, with an average temperature varying between 68.7°F (20.4°C) and 85.1°F (29.5°C). Riverdale Park notes an average high-temperature of a warm 85.1°F (29.5°C) in August, hardly diverging from July. Weather in August »
Weather in September
September, the first month of the autumn in Riverdale Park, is also a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 78.1°F (25.6°C). The onset of September entails a subtle temperature shift, as the average high-temperature eases from a warm 85.1°F (29.5°C) in August to a still moderately hot 78.1°F (25.6°C). Weather in September »
Weather in October
October, like September, in Riverdale Park, Maryland, is another enjoyable autumn month, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 51.8°F (11°C). The onset of October introduces a moderate change in Riverdale Park's weather, with average high-temperatures falling from September's moderately hot 78.1°F (25.6°C) to a refreshing 66.2°F (19°C). Weather in October »
Weather in November
November, the last month of the autumn in Riverdale Park, is also a fresh month, with an average temperature varying between 40.1°F (4.5°C) and 54.1°F (12.3°C). The move into November indicates a reduction in the average high-temperature, down from October's comfortable 66.2°F (19°C) to a fresh 54.1°F (12.3°C). Weather in November »
Weather in December
December, the first month of the winter in Riverdale Park, is also a frosty month, with an average temperature fluctuating between 45.5°F (7.5°C) and 34.3°F (1.3°C). The advent of December brings a slight shift in average high-temperature, moving from a fresh 54.1°F (12.3°C) in November to a frosty 45.5°F (7.5°C). Weather in December »
Updated: Aug 15, 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 part of the year is the coldest?
The coldest period is January, when temperatures fluctuate between an average high of 39.9°F (4.4°C) and a low of 27.7°F (-2.4°C).
What is the driest month?
The month with the least rainfall is January, when the rain falls for 9.3 days and typically collects 2.01" (51mm) of precipitation.
How much does it rain?
In Riverdale Park, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.
When does it snow?
January through April and December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 4.1 days and typically aggregates up to 2.6" (66mm) of snow.
How many days does it snow?
In Riverdale Park, during the entire year, snow falls for 13.5 days and aggregates up to 7.2" (183mm) of snow.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
What is the month with the least sunshine?
With an average of 5h 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 are the least humid months?
April and July, with an average relative humidity of 71%, are the least humid months.
What are the most humid months?
May, October and December, with an average relative humidity of 76%, are most humid months.
When it does not snow?
May through November are months without snowfall in Riverdale Park.
What is the month with 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?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What are the warmest months?
July, known for its average high temperature of 87.4°F (30.8°C) and an average low temperature of 70°F (21.1°C), is 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 rainiest month?
August is the month with the most rainfall. Rain falls for 15.8 days and accumulates 3.58" (91mm) 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
Riverdale Park, MD
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure
Riverdale Park, MD
- Average pressure in January:
30.11"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:
30.04"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
Riverdale Park, MD
- Average wind speed in January:
7.9mph - Average wind speed in February:
8mph - Average wind speed in March:
8.3mph - Average wind speed in April:
8.2mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6.1mph - Average wind speed in October:
6.9mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Riverdale Park, MD
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall
Riverdale Park, MD
- Average rainfall in January:
2.01" - Average rainfall in February:
2.09" - Average rainfall in March:
2.36" - Average rainfall in April:
2.72" - Average rainfall in May:
2.99" - Average rainfall in June:
2.8"
- Average rainfall in July:
3.11" - Average rainfall in August:
3.58" - Average rainfall in September:
2.09" - Average rainfall in October:
2.64" - Average rainfall in November:
2.17" - Average rainfall in December:
2.6"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days
Riverdale Park, MD
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
10 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
17.9 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.8 days - Average rainfall days in November:
9 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).
Average snowfall
Riverdale Park, MD
The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days
Riverdale Park, MD
- Average snowfall days in January:
4.1 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.7 days - Average snowfall days in April:
0.2 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:
0.2 days - Average snowfall days in December:
2.4 days
The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Riverdale Park, 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 1min - 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 1min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 5min - Average sunshine in May:
8h and 5min - 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 0min).
Average sunshine days
Riverdale Park, MD
- Average sunshine days in January:
18.6 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Riverdale Park, 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 and December (UV index 2).
Average cloud cover
Riverdale Park, MD
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility
Riverdale Park, 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).
Riverdale Park, Maryland, USA
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