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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 Jefferson, Maryland, is a wintry winter month, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 40.5°F (4.7°C). January stands out as Jefferson's coldest month, with temperatures ranging between an average high of 40.5°F (4.7°C) and a low of 27.1°F (-2.7°C). Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Jefferson, Maryland, with an average temperature fluctuating between 44.6°F (7°C) and 29.7°F (-1.3°C). In February, Jefferson experiences a minor shift in meteorological conditions with average high-temperatures marked at a frosty 44.6°F (7°C), closely mirroring the climate in January. Weather in February »
Weather in March
March, the first month of the spring in Jefferson, is a cool month, with an average temperature varying between 52.9°F (11.6°C) and 36.9°F (2.7°C). The transition from February to March brings a subtle temperature rise, with average high-temperatures increasing from a chilly 44.6°F (7°C) to a cool 52.9°F (11.6°C). Weather in March »
Weather in April
April in Jefferson, Maryland, is a comfortable spring month, with an average temperature ranging between max 65.3°F (18.5°C) and min 46.9°F (8.3°C). April's arrival coincides with a temperature rise, moving from March's cool 52.9°F (11.6°C) to an enjoyable 65.3°F (18.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Jefferson, Maryland, with temperature in the range of an average low of 56.7°F (13.7°C) and an average high of 74.8°F (23.8°C). May's arrival signals an increase in average high-temperatures, moving from April's enjoyable 65.3°F (18.5°C) to a moderately hot 74.8°F (23.8°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Jefferson, Maryland, with an average temperature ranging between min 63.9°F (17.7°C) and max 82.9°F (28.3°C). The onset of June marks a slight increase in the average high-temperature, moving from 74.8°F (23.8°C) in May to a still moderately hot 82.9°F (28.3°C). Weather in June »
Weather in July
July in Jefferson, Maryland, is a hot summer month, with an average temperature fluctuating between 69.1°F (20.6°C) and 87.6°F (30.9°C). July is the month when Jefferson's temperatures reach their peak, with averages of 87.6°F (30.9°C) and lows of 69.1°F (20.6°C). July's heat index is computed to be a very hot 100.4°F (38°C). Weather in July »
Weather in August
August, the last month of the summer in Jefferson, is also a moderately hot month, with an average temperature varying between 85.6°F (29.8°C) and 67.3°F (19.6°C). The arrival of August denotes a barely perceptible change in the average high-temperatures to a warm 85.6°F (29.8°C) from July's 87.6°F (30.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Jefferson, Maryland, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 78.6°F (25.9°C). September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 85.6°F (29.8°C) to a still moderately hot 78.6°F (25.9°C). Weather in September »
Weather in October
October, like September, in Jefferson, Maryland, is another comfortable autumn month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 50.2°F (10.1°C). Jefferson in October demonstrates a small temperature transition, adjusting from an average high of a warm 78.6°F (25.9°C) in September to a refreshing 66.4°F (19.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Jefferson, Maryland, with an average temperature ranging between max 54.5°F (12.5°C) and min 39.2°F (4°C). Jefferson's transition into November involves a shift in temperature, receding from a refreshing 66.4°F (19.1°C) in October to a cool 54.5°F (12.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Jefferson, Maryland, with an average temperature fluctuating between 45.5°F (7.5°C) and 33.1°F (0.6°C). December weather is marked by a drop in the average high-temperature, falling from a cool 54.5°F (12.5°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Jefferson?
January, with an average high of 40.5°F (4.7°C) and a low of 27.1°F (-2.7°C), signifies the coldest month of the year in Jefferson, Maryland.
What is the driest month in Jefferson?
January is the month with the least rainfall in Jefferson. Rain falls for 9.8 days and accumulates 2.05" (52mm) of precipitation.
How much does it rain in Jefferson?
Throughout the year, there are 161.2 rainfall days, and 31.54" (801mm) of precipitation is accumulated.
When does it snow in Jefferson?
January through April, November and December are months with snowfall in Jefferson.
What is the snowiest month in Jefferson?
The month with the most snowfall in Jefferson is January, when snow falls for 4.9 days and typically aggregates up to 3.31" (84mm) of snow.
How many days does it snow in Jefferson?
In Jefferson, Maryland, during the entire year, snow falls for 16.1 days and aggregates up to 10.39" (264mm) of snow.
What is the month with the least sunshine in Jefferson?
The months with the least sunshine in Jefferson are January, February and December, with an average of 5.2h of sunshine.
When is the lowest UV index in Jefferson?
The months with the lowest UV index in Jefferson are January, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Jefferson?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Jefferson, 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 in Jefferson?
The months with the lowest humidity in Jefferson, Maryland, are April and July, with an average relative humidity of 71%.
When it does not snow in Jefferson?
In Jefferson, snow does not fall in May through October.
What are the months with the highest UV index in Jefferson?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days in Jefferson?
The month with the longest days in Jefferson, Maryland, is June, with an average of 14h and 54min of daylight.
What are the warmest months in Jefferson?
Jefferson's warmest weather arrives in July, when temperatures average a high of 87.6°F (30.9°C) and a low of 69.1°F (20.6°C).
What month has the most sunshine in Jefferson?
July has the most sunshine of the year in Jefferson, with an average of 10.9h of sunshine.
What is the rainiest month in Jefferson?
The month with the most rainfall in Jefferson is August, when the rain falls for 17.2 days and typically aggregates up to 3.78" (96mm) of precipitation.
What is the most humid month in Jefferson?
The most humid month is October, with an average relative humidity of 77%.
What is the month with the shortest days in Jefferson?
The month with the shortest days in Jefferson, Maryland, is December, with an average of 9h and 24min of daylight.
Average temperature
Jefferson, MD
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (40.5°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure
Jefferson, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"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:
29.95"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 (29.95"Hg).
Average wind speed
Jefferson, MD
- Average wind speed in January:
7.2mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.6mph - Average wind speed in December:
6.6mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Jefferson, MD
The month with the highest relative humidity is October (77%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall
Jefferson, MD
- Average rainfall in January:
2.05" - Average rainfall in February:
2.09" - Average rainfall in March:
2.4" - Average rainfall in April:
2.8" - Average rainfall in May:
3.15" - Average rainfall in June:
2.6"
- Average rainfall in July:
3.03" - Average rainfall in August:
3.78" - Average rainfall in September:
2.09" - Average rainfall in October:
2.6" - Average rainfall in November:
2.28" - Average rainfall in December:
2.68"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days
Jefferson, MD
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
10 days - Average rainfall days in March:
14 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
17.2 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (8.9 days).
Average snowfall
Jefferson, MD
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Jefferson, MD
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
4.7 days - Average snowfall days in March:
3.2 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:
2.6 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Jefferson, 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:
5h and 1min - Average sunshine in March:
6h and 5min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 1min - 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 months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days
Jefferson, MD
- Average sunshine days in January:
17.9 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.9 days).
Average UV index
Jefferson, 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
Jefferson, 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
Jefferson, 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).
Jefferson, Maryland, USA
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