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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is another cold winter month in Riderwood, Maryland, with temperature in the range of an average low of 25.9°F (-3.4°C) and an average high of 37.9°F (3.3°C). January stands out as Riderwood's coldest month, with an average high-temperature of 37.9°F (3.3°C) and a low-temperature of 25.9°F (-3.4°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Riderwood, Maryland, with an average temperature fluctuating between 28.2°F (-2.1°C) and 41.4°F (5.2°C). Stepping into February, Riderwood records an average high-temperature of a still icy 41.4°F (5.2°C), almost consistent with January. Weather in February »
Weather in March
March, the first month of the spring in Riderwood, is a cool month, with an average temperature ranging between min 35.1°F (1.7°C) and max 50°F (10°C). With the start of March, the average high-temperature marginally shifts from February's icy 41.4°F (5.2°C) to a fresh 50°F (10°C). Weather in March »
Weather in April
April in Riderwood, Maryland, is a refreshing spring month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 62.6°F (17°C). The shift into April is marked by a rise in the average high-temperature, moving from March's cool 50°F (10°C) to a refreshing 62.6°F (17°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Riderwood, Maryland, with an average temperature ranging between min 55°F (12.8°C) and max 71.6°F (22°C). As April gives way to May, the average high-temperature displays an increase, moving from a comfortable 62.6°F (17°C) to a pleasant 71.6°F (22°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Riderwood, Maryland, with an average temperature varying between 79.3°F (26.3°C) and 63.1°F (17.3°C). June showcases a minor temperature ascent, adjusting from May's agreeable 71.6°F (22°C) to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Riderwood, Maryland, is a moderately hot summer month, with temperature in the range of an average low of 68.5°F (20.3°C) and an average high of 84.9°F (29.4°C). In Riderwood, the peak temperatures are generally noted in July, averaging a high of 84.9°F (29.4°C) and a low of 68.5°F (20.3°C). In July, the heat index is evaluated at a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Riderwood, Maryland, with an average temperature fluctuating between 66.7°F (19.3°C) and 82.8°F (28.2°C). As Riderwood steps into August, the average high-temperature holds at a still warm 82.8°F (28.2°C), hinting at a minor fluctuation from the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Riderwood, is still a warm month, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 60.4°F (15.8°C). With the onset of September, Riderwood's climate undergoes a slight change as the average high-temperature moves from 82.8°F (28.2°C) in August to a still warm 76.3°F (24.6°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Riderwood, Maryland, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 64.8°F (18.2°C). The onset of October entails a temperature shift, as the average high-temperature decreases from a warm 76.3°F (24.6°C) in September to an enjoyable 64.8°F (18.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Riderwood, is another cool month, with an average temperature ranging between min 38.8°F (3.8°C) and max 52.9°F (11.6°C). Riderwood's November weather features a mild decline in high-temperatures, reducing from an enjoyable 64.8°F (18.2°C) in October to a fresh 52.9°F (11.6°C). Weather in November »
Weather in December
December, the first month of the winter in Riderwood, is also a frosty month, with an average temperature ranging between max 43.9°F (6.6°C) and min 33.1°F (0.6°C). In the transition to December, Riderwood observes a drop in the average high-temperature, moving from a fresh 52.9°F (11.6°C) in November to a chilly 43.9°F (6.6°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
What are the coldest months?
In Riderwood, January records the average lowest temperatures, peaking at 37.9°F (3.3°C) and reaching a low of 25.9°F (-3.4°C).
What is the driest month?
The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 0.47" (12mm) of precipitation.
How much does it rain?
In Riderwood, during the entire year, the rain falls for 102.3 days and collects up to 9.25" (235mm) of precipitation.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 3.1 days and typically aggregates up to 0.55" (14mm) of snow.
How many days does it snow?
In Riderwood, during the entire year, snow falls for 12.1 days and aggregates up to 1.81" (46mm) of snow.
What are the months with the lowest UV index in Riderwood?
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 least sunshine?
The month with the least sunshine is February, with an average of 4.9h of sunshine.
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 least humid month?
With an average relative humidity of 73%, April is the least humid month.
What is the most humid month?
May is the most humid month, with an average relative humidity of 79%.
When it does not snow?
May through October are months without snowfall.
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?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What is the hottest time of year?
Riderwood experiences its highest temperatures in July, with an average peak of 84.9°F (29.4°C) and a low of 68.5°F (20.3°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.8h of sunshine.
What is the wettest month?
August is the month with the most rainfall. Rain falls for 11.3 days and accumulates 1.46" (37mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Riderwood, MD
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.9°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure
Riderwood, 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
Riderwood, MD
- Average wind speed in January:
8.9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.5mph - Average wind speed in November:
8mph - Average wind speed in December:
8.3mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity
Riderwood, MD
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Riderwood, MD
- Average rainfall in January:
0.47" - Average rainfall in February:
0.51" - Average rainfall in March:
0.67" - Average rainfall in April:
0.63" - Average rainfall in May:
0.79" - Average rainfall in June:
0.94"
- Average rainfall in July:
1.22" - Average rainfall in August:
1.46" - Average rainfall in September:
0.51" - Average rainfall in October:
0.71" - Average rainfall in November:
0.59" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days
Riderwood, MD
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
6 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
10.1 days - Average rainfall days in May:
11.1 days - Average rainfall days in June:
10.3 days
- Average rainfall days in July:
12.6 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
8 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
5.6 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Riderwood, MD
The month with the highest snowfall is January (0.55").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Riderwood, MD
- Average snowfall days in January:
3.1 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
2.5 days - Average snowfall days in April:
0.3 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:
0.4 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Riderwood, 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 4min - Average sunshine in April:
8h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days
Riderwood, MD
- Average sunshine days in January:
22.6 days - Average sunshine days in February:
18.7 days - Average sunshine days in March:
20.3 days - Average sunshine days in April:
18.4 days - Average sunshine days in May:
17.1 days - Average sunshine days in June:
15.7 days
- Average sunshine days in July:
15.2 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
21.3 days - Average sunshine days in November:
22.9 days - Average sunshine days in December:
21.9 days
The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is July (15.2 days).
Average UV index
Riderwood, 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
Riderwood, MD
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Riderwood, 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).
Riderwood, 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