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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 another cold winter month in O'Donnell, Maryland, with an average temperature fluctuating between 38.1°F (3.4°C) and 25.9°F (-3.4°C). January is the month when O'Donnell sees the lowest average temperatures, with a high of 38.1°F (3.4°C) and a low of 25.9°F (-3.4°C). Weather in January »
Weather in February
February, the last month of the winter in O'Donnell, is also a wintry month, with an average temperature ranging between max 42.4°F (5.8°C) and min 28.4°F (-2°C). The dawn of February sees an average high-temperature of a still icy 42.4°F (5.8°C), subtly contrasting with January's 38.1°F (3.4°C). Weather in February »
Weather in March
March, the first month of the spring in O'Donnell, is a cool month, with an average temperature varying between 51.1°F (10.6°C) and 35.8°F (2.1°C). O'Donnell's transition into March brings a slight rise in the average high-temperature, moving from a wintry 42.4°F (5.8°C) in February to a cool 51.1°F (10.6°C). Weather in March »
Weather in April
April is a refreshing spring month in O'Donnell, Maryland, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 63.1°F (17.3°C). In O'Donnell, stepping into April brings a temperature increase, moving up from March's fresh 51.1°F (10.6°C) to an enjoyable 63.1°F (17.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in O'Donnell, Maryland, with an average temperature varying between 55.4°F (13°C) and 72.5°F (22.5°C). As May arrives, a rise in the average high-temperature is observed, moving from an enjoyable 63.1°F (17.3°C) in April to a pleasant 72.5°F (22.5°C). Weather in May »
Weather in June
June, the first month of the summer in O'Donnell, is a moderately hot month, with an average temperature ranging between max 80.6°F (27°C) and min 64°F (17.8°C). June introduces a marginal temperature uplift, with average high-temperatures adjusting from May's pleasant 72.5°F (22.5°C) to a moderately hot 80.6°F (27°C). Weather in June »
Weather in July
July, like June, in O'Donnell, Maryland, is another warm summer month, with an average temperature ranging between min 68.9°F (20.5°C) and max 85.8°F (29.9°C). July, recording an average high temperature of 85.8°F (29.9°C) and a low temperature of 68.9°F (20.5°C), is O'Donnell's warmest month. July's heat index is computed to be a torrid 95°F (35°C). Weather in July »
Weather in August
August, the last month of the summer in O'Donnell, is also a moderately hot month, with temperature in the range of an average low of 67.3°F (19.6°C) and an average high of 83.7°F (28.7°C). O'Donnell experiences an average high-temperature of a still warm 83.7°F (28.7°C) in August, marking an insignificant shift from 85.8°F (29.9°C) in July. Weather in August »
Weather in September
September, the first month of the autumn in O'Donnell, is also a moderately hot month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 77.2°F (25.1°C). With the onset of September, O'Donnell's average high-temperature slightly adjusts, moderately receding from August's 83.7°F (28.7°C) to a still moderately hot 77.2°F (25.1°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in O'Donnell, Maryland, with an average temperature fluctuating between 50.7°F (10.4°C) and 65.7°F (18.7°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a warm 77.2°F (25.1°C) to a refreshing 65.7°F (18.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in O'Donnell, Maryland, with an average temperature ranging between min 38.8°F (3.8°C) and max 52.9°F (11.6°C). The commencement of November involves a temperature shift, with the average high-temperature dropping from a comfortable 65.7°F (18.7°C) in October to a cool 52.9°F (11.6°C). Weather in November »
Weather in December
December, the first month of the winter in O'Donnell, is still a chilly month, with an average temperature fluctuating between 44.4°F (6.9°C) and 33.1°F (0.6°C). The transition into December subtly indicates a reduction in the average high-temperature, down to a frosty 44.4°F (6.9°C) from November's cool 52.9°F (11.6°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 part of the year is the coldest?
January is the coldest month, with an average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 25.9°F (-3.4°C).
How much does it rain?
In O'Donnell, during the entire year, the rain falls for 157.1 days and collects up to 29.02" (737mm) of precipitation.
When does it snow?
January through March, November and December are months with snowfall.
How many days does it snow?
Throughout the year, in O'Donnell, there are 15.7 snowfall days, and 8.86" (225mm) of snow is accumulated.
What are the months with the least sunshine?
January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.
When is the lowest UV index in O'Donnell?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most?
The month with the most snowfall is March, when snow falls for 3.3 days and typically aggregates up to 3.03" (77mm) 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 72%, are the least humid months.
When it does not snow in O'Donnell?
In O'Donnell, snow does not fall in April through October.
What is the most humid month?
The most humid month is May, with an average relative humidity of 77%.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
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 warmest month?
With its average high temperature of 85.8°F (29.9°C) and a low of 68.9°F (20.5°C), July is regarded as the warmest month.
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 in O'Donnell?
The month with the most rainfall is August, when the rain falls for 17.1 days and typically aggregates up to 4.13" (105mm) of precipitation.
What is the driest month?
The month with the least rainfall is November, when the rain falls for 8.8 days and typically collects 1.22" (31mm) 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
O'Donnell, MD
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure
O'Donnell, 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
O'Donnell, MD
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.8mph - Average wind speed in December:
8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
O'Donnell, MD
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall
O'Donnell, MD
- Average rainfall in January:
1.85" - Average rainfall in February:
1.97" - Average rainfall in March:
2.2" - Average rainfall in April:
2.36" - Average rainfall in May:
3.11" - Average rainfall in June:
2.6"
- Average rainfall in July:
3.46" - Average rainfall in August:
4.13" - Average rainfall in September:
2.28" - Average rainfall in October:
2.05" - Average rainfall in November:
1.22" - Average rainfall in December:
1.77"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days
O'Donnell, MD
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
13 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
17.1 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall
O'Donnell, MD
The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
O'Donnell, MD
- Average snowfall days in January:
4.4 days - Average snowfall days in February:
4.6 days - Average snowfall days in March:
3.3 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:
0.5 days - Average snowfall days in December:
2.7 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
O'Donnell, 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:
5h and 1min - 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:
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 5min - 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 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days
O'Donnell, MD
- Average sunshine days in January:
18 days - Average sunshine days in February:
15 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
12 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (11.1 days).
Average UV index
O'Donnell, 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
O'Donnell, MD
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
O'Donnell, 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).
O'Donnell, Maryland, USA
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