Monthly weather forecast and climate
Chester, MD

January, like December, in Chester, Maryland, is a wintry winter month, with average temperature fluctuating between 29.5°F (-1.4°C) and 40.1°F (4.5°C). With an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 29.5°F (-1.4°C), January is the coldest month. Weather in January »

The last month of the winter, February, is a frosty month in Chester, Maryland, with average temperature ranging between min 31.5°F (-0.3°C) and max 43.3°F (6.3°C). In February, the average high-temperature is essentially the same as in January - a chilly 43.3°F (6.3°C). Weather in February »

March, the first month of the spring, in Chester, is a cool month, with temperature in the range of an average high of 50.4°F (10.2°C) and an average low of 37.8°F (3.2°C). In March, the average high-temperature marginally rises, from a chilly 43.3°F (6.3°C) in February, to a fresh 50.4°F (10.2°C). Weather in March »

April is an enjoyable spring month in Chester, Maryland, with average temperature ranging between min 48°F (8.9°C) and max 61.5°F (16.4°C). In April, the average high-temperature increases, from a cool 50.4°F (10.2°C) in March, to a comfortable 61.5°F (16.4°C). Weather in April »

The last month of the spring, May, is an agreeable month in Chester, Maryland, with average temperature fluctuating between 57.6°F (14.2°C) and 70.9°F (21.6°C). In Chester, the average high-temperature increases, from a comfortable 61.5°F (16.4°C) in April, to a pleasant 70.9°F (21.6°C). Weather in May »

June, the first month of the summer, in Chester, is a moderately hot month, with average temperature ranging between max 79.3°F (26.3°C) and min 66°F (18.9°C). In June, the average high-temperature slightly increases, from an agreeable 70.9°F (21.6°C) in May, to a warm 79.3°F (26.3°C). Weather in June »

July, like June, in Chester, Maryland, is a moderately hot summer month, with average temperature varying between 84.4°F (29.1°C) and 71.2°F (21.8°C). July is the warmest month, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 71.2°F (21.8°C). In July, the average heat index is estimated at a tropical 93.6°F (34.2°C). Weather in July »

August, the last month of the summer, in Chester, is another warm month, with average temperature ranging between max 82.6°F (28.1°C) and min 69.6°F (20.9°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 82.6°F (28.1°C). Weather in August »

The first month of the autumn, September, is still a warm month in Chester, Maryland, with average temperature fluctuating between 77.4°F (25.2°C) and 63.5°F (17.5°C). In Chester, the average high-temperature is almost the same as in August - a still warm 77.4°F (25.2°C). Weather in September »

October, like September, in Chester, Maryland, is another enjoyable autumn month, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 66°F (18.9°C). In Chester, the average high-temperature drops, from a warm 77.4°F (25.2°C) in September, to an enjoyable 66°F (18.9°C). Weather in October »

November, the last month of the autumn, in Chester, is also a fresh month, with temperature in the range of an average high of 54.5°F (12.5°C) and an average low of 42.8°F (6°C). In November, the average high-temperature decreases, from a comfortable 66°F (18.9°C) in October, to a fresh 54.5°F (12.5°C). Weather in November »

The first month of the winter, December, is also a frosty month in Chester, Maryland, with average temperature varying between 36.3°F (2.4°C) and 46.2°F (7.9°C). In December, the average high-temperature marginally drops, from a fresh 54.5°F (12.5°C) in November, to a chilly 46.2°F (7.9°C). Weather in December »

What is the coldest month in Chester?

With an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 29.5°F (-1.4°C), January is the coldest month in Chester.

What are the least humid months in Chester?

Months with the lowest humidity in Chester are January and November, with an average relative humidity of 73%.

How many days does it rain in Chester?

In Chester, during the entire year, the rain falls for 159 days and collects up to 32.36" (822mm) of precipitation.

When does it snow in Chester?

January through April, November and December are months with snowfall.

How many days does it snow in Chester?

In Chester, during the entire year, snow falls for 11.4 days, and aggregates up to 4.13" (105mm) of snow.

What is the snowiest month in Chester?

January is the month with the most snowfall. Snow falls for 4.2 days and accumulates 1.42" (36mm) of snow.

When is the lowest UV index in Chester?

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

What is the month with the coldest ocean in Chester?

With an average ocean temperature of 45.1°F (7.3°C), February is the month with the coldest seawater.

What is the month with the least sunshine in Chester?

The month with the least sunshine is February, with an average of 5h of sunshine.

What is the most humid month in Chester?

With an average relative humidity of 79%, May is the most humid month in Chester.

When it does not snow in Chester?

In Chester, Maryland, snow does not fall in May through October.

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

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

When are the longest days in Chester?

With an average of 14.9h of daylight, June has the longest days of the year.

What is the warmest month in Chester?

With an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 71.2°F (21.8°C), July is the warmest month in Chester, Maryland.

What is the rainiest month in Chester?

The month with the most rainfall is July when the rain falls for 16.8 days and typically aggregates up to 3.31" (84mm) of precipitation.

What month has the most sunshine in Chester?

July has the most sunshine of the year, with an average of 10.9h of sunshine.

What is the month with the warmest ocean in Chester?

August is the month with the warmest seawater in Chester, Maryland, with an average ocean temperature of 77.7°F (25.4°C).

What is the driest month in Chester?

The month with the least rainfall in Chester is September when the rain falls for 12.5 days and typically collects 1.89" (48mm) of precipitation.

What is the month with the shortest days in Chester?

The month with the shortest days is December, with an average of 9.5h of daylight.
Average temperature - Chester, MD
Average pressure - Chester, MD

The month with the highest atmospheric pressure is November (30.13").
The month with the lowest atmospheric pressure is June (29.94").

Average wind speed - Chester, MD

The windiest months (with the highest average wind speed) are February and March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity - Chester, MD
Average rainfall - Chester, MD

The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days - Chester, MD

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (8.8 days).

Average snowfall - Chester, MD

The month with the highest snowfall is January (1.42").
Months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days - Chester, MD

The month with the highest number of snowfall days is January (4.2 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature - Chester, MD

The best month for swimming (with the highest average sea temperature) is August (77.8°F).
The coldest month (with the lowest average sea temperature) is February (45.1°F).

Average daylight / Average sunshine - Chester, MD

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is February (Average sunshine: 5h).

Average sunshine days - Chester, MD

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.1 days).

Average visibility - Chester, MD

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).