Monthly weather forecast and climate
Winterthur, DE

Weather in January

January, the same as December, is a wintry winter month in Winterthur, 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 Winterthur, is also a wintry month, with average temperature varying between 40.8°F (4.9°C) and 27.7°F (-2.4°C). In Winterthur, Delaware, the average high-temperature in February is relatively the same as in January - a still wintry 40.8°F (4.9°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Winterthur, Delaware, with average temperature fluctuating between 49.3°F (9.6°C) and 34.7°F (1.5°C). In March, the average high-temperature slightly increases, from a wintry 40.8°F (4.9°C) in February, to a frosty 49.3°F (9.6°C). Weather in March »

Weather in April

April is an enjoyable spring month in Winterthur, Delaware, with average temperature varying between 44.6°F (7°C) and 61.3°F (16.3°C). In Winterthur, the average high-temperature rises, from a chilly 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 Winterthur, is a pleasant month, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 54.5°F (12.5°C). In May, the average high-temperature rises, from an enjoyable 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 Winterthur, Delaware, with average temperature ranging between max 79.5°F (26.4°C) and min 62.8°F (17.1°C). In June, the average high-temperature slightly increases, from a pleasant 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 Winterthur, Delaware, is a moderately hot summer month, with average temperature ranging between max 84.9°F (29.4°C) and min 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 evaluated at a tropical 94.1°F (34.5°C). Weather in July »

Weather in August

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

Weather in September

September, the first month of the autumn, in Winterthur, is still a warm month, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 76.3°F (24.6°C). In September, the average high-temperature marginally drops, from a warm 82.9°F (28.3°C) in August, to a still moderately hot 76.3°F (24.6°C). Weather in September »

Weather in October

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

Weather in November

The last month of the autumn, November, is another cool month in Winterthur, Delaware, with average temperature fluctuating between 52.2°F (11.2°C) and 38.8°F (3.8°C). In Winterthur, the average high-temperature drops, 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 Winterthur, is still a chilly month, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 32.7°F (0.4°C). In December, the average high-temperature marginally drops, from a cool 52.2°F (11.2°C) in November, to a frosty 43.7°F (6.5°C). Weather in December »
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FAQ

What is the coldest month in Winterthur?

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).

How much does it rain in Winterthur?

Throughout the year, in Winterthur, there are 168.9 rainfall days, and 35.55" (903mm) of precipitation is accumulated.

What is the driest month in Winterthur?

The month with the least rainfall in Winterthur, Delaware, is January when the rain falls for 9.3 days and typically collects 2.36" (60mm) of precipitation.

When does it snow in Winterthur?

Months with snowfall in Winterthur, Delaware, are January through May, October through December.

How many days does it snow in Winterthur?

Throughout the year, in Winterthur, there are 21.9 snowfall days, and 12.05" (306mm) of snow is accumulated.

When is the lowest UV index in Winterthur?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the month with the least sunshine in Winterthur?

February has the least sunshine of the year, with an average of 4.9h of sunshine.

What is the snowiest month in Winterthur?

The month with the most snowfall in Winterthur 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 Winterthur?

With an average relative humidity of 72%, April is the least humid month.

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

Months with the highest UV index in Winterthur, Delaware, are May through August, with an average maximum UV index of 6.

When it does not snow in Winterthur?

In Winterthur snow does not fall in June through September.

When are the longest days in Winterthur?

With an average of 15h of daylight, June has the longest days of the year.

What is the warmest month in Winterthur?

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 Winterthur.

What month has the most sunshine in Winterthur?

July has the most sunshine of the year in Winterthur, Delaware, with an average of 10.6h of sunshine.

What is the wettest month in Winterthur?

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

What is the most humid month in Winterthur?

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

What is the month with the shortest days in Winterthur?

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

Average temperature
Winterthur, DE

Average temperature - Winterthur, 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
Winterthur, DE

Average pressure - Winterthur, 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
Winterthur, DE

Average wind speed - Winterthur, 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
Winterthur, DE

Average rainfall - Winterthur, 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
Winterthur, DE

Average rainfall days - Winterthur, 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
Winterthur, DE

Average snowfall - Winterthur, 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
Winterthur, DE

Average snowfall days - Winterthur, 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 daylight / Average sunshine
Winterthur, DE

Average daylight / Average sunshine - Winterthur, 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
Winterthur, DE

Average sunshine days - Winterthur, 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
Winterthur, DE

Average UV index - Winterthur, 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
Winterthur, DE

Average visibility - Winterthur, 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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