Monthly weather forecast and climate
Wilmington, DE

Bright neon lights light up the Central Business District of Wilmington, Delaware, with a scenic reflection in the Christian River
Bright neon lights light up the Central Business District of Wilmington, Delaware, with a scenic reflection in the Christian River

Weather in January

January, the same as December, is a wintry winter month in Wilmington, Delaware, with temperature in the range of an average low of 25.3°F (-3.7°C) and an average high of 37°F (2.8°C). January is the coldest month, with an average high-temperature of 37°F (2.8°C) and an average low-temperature of 25.3°F (-3.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Wilmington, is another cold month, with temperature in the range of an average low of 27.7°F (-2.4°C) and an average high of 40.8°F (4.9°C). In February, the average high-temperature is essentially the same as in January - a still cold 40.8°F (4.9°C). Weather in February »

Weather in March

March, the first month of the spring, in Wilmington, is a chilly month, with temperature in the range of an average high of 49.3°F (9.6°C) and an average low of 34.7°F (1.5°C). In Wilmington, the average high-temperature in March marginally rises, from a cold 40.8°F (4.9°C) in February, to a chilly 49.3°F (9.6°C). Weather in March »

Weather in April

April in Wilmington, Delaware, is a comfortable spring month, with average temperature ranging between max 61.3°F (16.3°C) and min 44.6°F (7°C). In Wilmington, the average high-temperature increases, from a frosty 49.3°F (9.6°C) in March, to a comfortable 61.3°F (16.3°C). Weather in April »

Weather in May

May, the last month of the spring, in Wilmington, is a pleasant month, with average temperature ranging between min 54.5°F (12.5°C) and max 71.6°F (22°C). In May, the average high-temperature rises, from a comfortable 61.3°F (16.3°C) in April, to an agreeable 71.6°F (22°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Wilmington, Delaware, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 62.8°F (17.1°C). In Wilmington, Delaware, the average high-temperature in June marginally rises, from an agreeable 71.6°F (22°C) in May, to a moderately hot 79.5°F (26.4°C). Weather in June »

Weather in July

July, like June, in Wilmington, Delaware, is a moderately hot summer month, with average temperature varying between 84.9°F (29.4°C) and 68.4°F (20.2°C). With an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 68.4°F (20.2°C), July is the warmest month. In July, the average heat index is estimated at a tropical 94.1°F (34.5°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Wilmington, Delaware, with average temperature varying between 66.7°F (19.3°C) and 82.9°F (28.3°C). In Wilmington, the average high-temperature in August is practically the same as in July - a still warm 82.9°F (28.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in Wilmington, is still a warm month, with average temperature ranging between max 76.3°F (24.6°C) and min 59.9°F (15.5°C). In September, the average high-temperature slightly decreases, from a moderately hot 82.9°F (28.3°C) in August, to a still warm 76.3°F (24.6°C). Weather in September »

Weather in October

October, like September, in Wilmington, Delaware, is another comfortable autumn month, with average temperature varying between 64.6°F (18.1°C) and 50.2°F (10.1°C). In October, the average high-temperature decreases, from a moderately hot 76.3°F (24.6°C) in September, to an enjoyable 64.6°F (18.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Wilmington, Delaware, with average temperature fluctuating between 38.8°F (3.8°C) and 52.2°F (11.2°C). In Wilmington, the average high-temperature decreases, from a comfortable 64.6°F (18.1°C) in October, to a cool 52.2°F (11.2°C). Weather in November »

Weather in December

December, the first month of the winter, in Wilmington, is still a chilly month, with average temperature fluctuating between 32.7°F (0.4°C) and 43.7°F (6.5°C). In Wilmington, Delaware, the average high-temperature slightly decreases, from a cool 52.2°F (11.2°C) in November, to a chilly 43.7°F (6.5°C). Weather in December »
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FAQ

What is the coldest month in Wilmington?

With an average high-temperature of 37°F (2.8°C) and an average low-temperature of 25.3°F (-3.7°C), January is the coldest month.

How much does it rain in Wilmington?

In Wilmington, Delaware, during the entire year, the rain falls for 168.9 days and collects up to 35.55" (903mm) of precipitation.

What is the driest month in Wilmington?

January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 2.36" (60mm) of precipitation.

When does it snow in Wilmington?

Months with snowfall are January through May, October through December.

How much does it snow in Wilmington?

In Wilmington, during the entire year, snow falls for 21.9 days, and aggregates up to 12.05" (306mm) of snow.

What is the month with the lowest UV index in Wilmington?

Months with the lowest UV index in Wilmington, Delaware, are January, February, November and December, with an average maximum UV index of 2.

When is the ocean coldest in Wilmington?

With an average ocean temperature of 33.8°F (1°C), February is the month with the coldest seawater in Wilmington.

What is the month with the least sunshine in Wilmington?

With an average of 4.9h of sunshine, February has the least sunshine of the year in Wilmington.

When does it snow the most in Wilmington?

The month with the most snowfall is March when snow falls for 4.7 days and typically aggregates up to 3.58" (91mm) of snow.

What is the least humid month in Wilmington?

The least humid month in Wilmington is April, with an average relative humidity of 72%.

What are the months with the highest UV index in Wilmington?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Wilmington.

When it does not snow in Wilmington?

June through September are months without snowfall in Wilmington.

When are the longest days in Wilmington?

The month with the longest days in Wilmington, Delaware, is June, with an average of 15h of daylight.

What is the warmest month in Wilmington?

With an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 68.4°F (20.2°C), July is the warmest month in Wilmington, Delaware.

What month has the most sunshine in Wilmington?

The month with the most sunshine in Wilmington, Delaware, is July, with an average of 10.6h of sunshine.

What is the wettest month in Wilmington?

The month with the most rainfall in Wilmington, Delaware, is August when the rain falls for 17.3 days and typically aggregates up to 4.09" (104mm) of precipitation.

What month is the ocean warmest in Wilmington?

With an average ocean temperature of 73.4°F (23°C), August is the month with the warmest seawater in Wilmington, Delaware.

What is the most humid month in Wilmington?

The most humid month in Wilmington is October, with an average relative humidity of 78%.

What is the month with the shortest days in Wilmington?

The month with the shortest days in Wilmington, Delaware, is December, with an average of 9.4h of daylight.

Average temperature
Wilmington, DE

Average temperature - Wilmington, DE

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°F).

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

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Average pressure
Wilmington, DE

Average pressure - Wilmington, DE

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed
Wilmington, DE

Average wind speed - Wilmington, DE

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average rainfall
Wilmington, DE

Average rainfall - Wilmington, DE

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").

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Average rainfall days
Wilmington, DE

Average rainfall days - Wilmington, DE

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall
Wilmington, DE

Average snowfall - Wilmington, DE

The month with the highest snowfall is March (3.58").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Wilmington, DE

Average snowfall days - Wilmington, DE

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature
Wilmington, DE

Average sea temperature - Wilmington, DE

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (34°F).

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Average daylight / Average sunshine
Wilmington, DE

Average daylight / Average sunshine - Wilmington, DE

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.9h).

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Average sunshine days
Wilmington, DE

Average sunshine days - Wilmington, DE

The month with the most sunshine days is November (18.6 days).
Months with the least sunshine days are May and July (9.8 days).

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Average UV index
Wilmington, DE

Average UV index - Wilmington, DE

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Wilmington, DE

Average visibility - Wilmington, DE

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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