Monthly weather forecast and climate
Old Mystic, CT

Weather in January

January, the same as December, is another cold winter month in Old Mystic, Connecticut, with temperature in the range of an average high of 35.4°F (1.9°C) and an average low of 24.8°F (-4°C). The coldest month is January, with an average high-temperature of 35.4°F (1.9°C) and an average low-temperature of 24.8°F (-4°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Old Mystic, Connecticut, with temperature in the range of an average high of 38.1°F (3.4°C) and an average low of 25.3°F (-3.7°C). In February, the average high-temperature is relatively the same as in January - a still wintry 38.1°F (3.4°C). Weather in February »

Weather in March

March, the first month of the spring, in Old Mystic, is a chilly month, with average temperature fluctuating between 32.4°F (0.2°C) and 44.2°F (6.8°C). In March, the average high-temperature marginally rises, from a cold 38.1°F (3.4°C) in February, to a frosty 44.2°F (6.8°C). Weather in March »

Weather in April

April is a cool spring month in Old Mystic, Connecticut, with temperature in the range of an average low of 41°F (5°C) and an average high of 54.5°F (12.5°C). In April, the average high-temperature increases, from a frosty 44.2°F (6.8°C) in March, to a cool 54.5°F (12.5°C). Weather in April »

Weather in May

May, the last month of the spring, in Old Mystic, is an enjoyable month, with average temperature ranging between max 64.9°F (18.3°C) and min 50.2°F (10.1°C). In Old Mystic, the average high-temperature increases, from a fresh 54.5°F (12.5°C) in April, to a comfortable 64.9°F (18.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Old Mystic, is an agreeable month, with average temperature fluctuating between 57.9°F (14.4°C) and 72.7°F (22.6°C). In June, the average high-temperature marginally rises, from an enjoyable 64.9°F (18.3°C) in May, to a pleasant 72.7°F (22.6°C). Weather in June »

Weather in July

July is a warm summer month in Old Mystic, Connecticut, with average temperature ranging between max 80.2°F (26.8°C) and min 65.3°F (18.5°C). With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 65.3°F (18.5°C), July is the warmest month. Weather in July »

Weather in August

August, the last month of the summer, in Old Mystic, is also a moderately hot month, with average temperature ranging between min 64.4°F (18°C) and max 79.2°F (26.2°C). In August, the average high-temperature is almost the same as in July - a still warm 79.2°F (26.2°C). Weather in August »

Weather in September

September, the first month of the autumn, in Old Mystic, is also an agreeable month, with average temperature varying between 72.5°F (22.5°C) and 58.1°F (14.5°C). In September, the average high-temperature slightly decreases, from a warm 79.2°F (26.2°C) in August, to a pleasant 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Old Mystic, Connecticut, with average temperature ranging between min 49.6°F (9.8°C) and max 61.7°F (16.5°C). In October, the average high-temperature drops, from a pleasant 72.5°F (22.5°C) in September, to an enjoyable 61.7°F (16.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Old Mystic, is also a fresh month, with average temperature varying between 50.9°F (10.5°C) and 38.7°F (3.7°C). In November, the average high-temperature drops, from an enjoyable 61.7°F (16.5°C) in October, to a cool 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Old Mystic, is still a cold month, with average temperature varying between 41.7°F (5.4°C) and 31.3°F (-0.4°C). In Old Mystic, the average high-temperature decreases, from a cool 50.9°F (10.5°C) in November, to a wintry 41.7°F (5.4°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Old Mystic?

With an average high-temperature of 35.4°F (1.9°C) and an average low-temperature of 24.8°F (-4°C), January is the coldest month in Old Mystic.

How many days does it rain in Old Mystic?

Throughout the year, there are 162.1 rainfall days, and 33.66" (855mm) of precipitation is accumulated.

When does it snow in Old Mystic?

January through May, November and December are months with snowfall in Old Mystic.

How much does it snow in Old Mystic?

In Old Mystic, during the entire year, snow falls for 26.7 days, and aggregates up to 9.72" (247mm) of snow.

What are the months with the lowest UV index in Old Mystic?

January through March, 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 Old Mystic?

Months with the least sunshine are February and December, with an average of 4.8h of sunshine.

What is the snowiest month in Old Mystic?

March is the month with the most snowfall in Old Mystic, Connecticut. Snow falls for 6.3 days and accumulates 2.56" (65mm) of snow.

What is the least humid month in Old Mystic?

April is the least humid month in Old Mystic, with an average relative humidity of 73%.

What are the most humid months in Old Mystic?

June and July, with an average relative humidity of 79%, are most humid months in Old Mystic, Connecticut.

When it does not snow in Old Mystic?

In Old Mystic snow does not fall in June through October.

When are the longest days in Old Mystic?

June has the longest days of the year in Old Mystic, Connecticut, with an average of 15.1h of daylight.

What is the month with the highest UV index in Old Mystic?

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

What is the warmest month in Old Mystic?

July is the warmest month, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 65.3°F (18.5°C).

What month has the most sunshine in Old Mystic?

August has the most sunshine of the year, with an average of 10.4h of sunshine.

What is the driest month in Old Mystic?

September is the month with the least rainfall in Old Mystic, Connecticut. Rain falls for 12.1 days and accumulates 1.61" (41mm) of precipitation.

What is the wettest month in Old Mystic?

December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 3.78" (96mm) of precipitation.

What is the month with the shortest days in Old Mystic?

December has the shortest days of the year in Old Mystic, Connecticut, with an average of 9.2h of daylight.

Average temperature
Old Mystic, CT

Average temperature - Old Mystic, CT

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (35.4°F).

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

[Resources]

Average pressure
Old Mystic, CT

Average pressure - Old Mystic, CT

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

[Resources]

Average wind speed
Old Mystic, CT

Average wind speed - Old Mystic, CT

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

[Resources]

Average humidity
Old Mystic, CT

Average humidity - Old Mystic, CT

Months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).

[Resources]

Average rainfall
Old Mystic, CT

Average rainfall - Old Mystic, CT

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (1.61").

[Resources]

Average rainfall days
Old Mystic, CT

Average rainfall days - Old Mystic, CT

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (10 days).

[Resources]

Average snowfall
Old Mystic, CT

Average snowfall - Old Mystic, CT

The month with the highest snowfall is March (2.56").
Months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days
Old Mystic, CT

Average snowfall days - Old Mystic, CT

The month with the highest number of snowfall days is January (7 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight / Average sunshine
Old Mystic, CT

Average daylight / Average sunshine - Old Mystic, CT

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

The month with the most sunshine is August (Average sunshine: 10.4h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

[Resources]

Average sunshine days
Old Mystic, CT

Average sunshine days - Old Mystic, CT

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is July (11.5 days).

[Resources]

Average UV index
Old Mystic, CT

Average UV index - Old Mystic, CT

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

[Resources]

Average visibility
Old Mystic, CT

Average visibility - Old Mystic, CT

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).

[Resources]