Monthly weather forecast and climate
Crystal Lake, CT

Weather in January

January, the same as December, is a wintry winter month in Crystal Lake, Connecticut, with average temperature fluctuating between 19.8°F (-6.8°C) and 32.4°F (0.2°C). With an average high-temperature of 32.4°F (0.2°C) and an average low-temperature of 19.8°F (-6.8°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Crystal Lake, Connecticut, with average temperature fluctuating between 35.2°F (1.8°C) and 20.7°F (-6.3°C). In Crystal Lake, the average high-temperature in February is essentially the same as in January - a still wintry 35.2°F (1.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Crystal Lake, Connecticut, with average temperature varying between 28.8°F (-1.8°C) and 43.3°F (6.3°C). In Crystal Lake, the average high-temperature marginally rises, from a cold 35.2°F (1.8°C) in February, to a chilly 43.3°F (6.3°C). Weather in March »

Weather in April

April in Crystal Lake, Connecticut, is a moderate spring month, with average temperature fluctuating between 38.8°F (3.8°C) and 56.3°F (13.5°C). In Crystal Lake, the average high-temperature rises, from a frosty 43.3°F (6.3°C) in March, to a mild 56.3°F (13.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Crystal Lake, Connecticut, with average temperature varying between 68.4°F (20.2°C) and 48.6°F (9.2°C). In May, the average high-temperature rises, from a mild 56.3°F (13.5°C) in April, to an agreeable 68.4°F (20.2°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Crystal Lake, Connecticut, with average temperature fluctuating between 75.7°F (24.3°C) and 55.6°F (13.1°C). In June, the average high-temperature slightly increases, from a pleasant 68.4°F (20.2°C) in May, to a warm 75.7°F (24.3°C). Weather in June »

Weather in July

July, like June, in Crystal Lake, Connecticut, is another warm summer month, with average temperature ranging between min 62.6°F (17°C) and max 82.2°F (27.9°C). July is the warmest month, with an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 62.6°F (17°C). The average heat index is calculated to a tropical 88.3°F (31.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Crystal Lake, is another warm month, with average temperature fluctuating between 61.3°F (16.3°C) and 80.1°F (26.7°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 80.1°F (26.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Crystal Lake, Connecticut, with average temperature ranging between min 54.5°F (12.5°C) and max 73.4°F (23°C). In Crystal Lake, Connecticut, the average high-temperature marginally drops, from a moderately hot 80.1°F (26.7°C) in August, to a still warm 73.4°F (23°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Crystal Lake, Connecticut, with average temperature varying between 45.5°F (7.5°C) and 60.4°F (15.8°C). In Crystal Lake, the average high-temperature drops, from a moderately hot 73.4°F (23°C) in September, to a moderate 60.4°F (15.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Crystal Lake, Connecticut, with average temperature fluctuating between 34.7°F (1.5°C) and 48.4°F (9.1°C). In Crystal Lake, the average high-temperature decreases, from a mild 60.4°F (15.8°C) in October, to a chilly 48.4°F (9.1°C). Weather in November »

Weather in December

December, the first month of the winter, in Crystal Lake, is also a wintry month, with average temperature ranging between max 38.1°F (3.4°C) and min 27.1°F (-2.7°C). In Crystal Lake, the average high-temperature in December decreases, from a frosty 48.4°F (9.1°C) in November, to a wintry 38.1°F (3.4°C). Weather in December »
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FAQ

What is the coldest month in Crystal Lake?

January is the coldest month, with an average high-temperature of 32.4°F (0.2°C) and an average low-temperature of 19.8°F (-6.8°C).

How many days does it rain in Crystal Lake?

In Crystal Lake, Connecticut, during the entire year, the rain falls for 105.6 days and collects up to 9.84" (250mm) of precipitation.

When does it snow in Crystal Lake?

Months with snowfall in Crystal Lake, Connecticut, are January through May, November and December.

How many days does it snow in Crystal Lake?

Throughout the year, there are 23.1 snowfall days, and 4.69" (119mm) of snow is accumulated.

What is the month with the lowest UV index in Crystal Lake?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Crystal Lake.

What is the most humid month in Crystal Lake?

With an average relative humidity of 80%, February is the most humid month in Crystal Lake.

What is the snowiest month in Crystal Lake?

The month with the most snowfall in Crystal Lake, Connecticut, is February when snow falls for 6.4 days and typically aggregates up to 1.5" (38mm) of snow.

What is the month with the least sunshine in Crystal Lake?

February has the least sunshine of the year, with an average of 4.6h of sunshine.

What is the least humid month in Crystal Lake?

With an average relative humidity of 71%, April is the least humid month.

What is the wettest month in Crystal Lake?

Months with the most rainfall in Crystal Lake are May through July, with an average 1.1" (28mm) of precipitation.

When it does not snow in Crystal Lake?

In Crystal Lake snow does not fall in June through October.

When are the longest days in Crystal Lake?

June has the longest days of the year, with an average of 15.2h of daylight.

What is the month with the highest UV index in Crystal Lake?

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

What is the warmest month in Crystal Lake?

With an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 62.6°F (17°C), July is the warmest month in Crystal Lake.

What are the months with the most sunshine in Crystal Lake?

Months with the most sunshine in Crystal Lake, Connecticut, are July and August, with an average of 10.3h of sunshine.

What is the driest month in Crystal Lake?

September is the month with the least rainfall. Rain falls for 7.9 days and accumulates 0.39" (10mm) of precipitation.

What is the month with the shortest days in Crystal Lake?

The month with the shortest days in Crystal Lake is December, with an average of 9.2h of daylight.

Average temperature
Crystal Lake, CT

Average temperature - Crystal Lake, CT

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.4°F).

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure
Crystal Lake, CT

Average pressure - Crystal Lake, CT

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

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Average wind speed
Crystal Lake, CT

Average wind speed - Crystal Lake, CT

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity
Crystal Lake, CT

Average humidity - Crystal Lake, CT

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall
Crystal Lake, CT

Average rainfall - Crystal Lake, CT

The wettest months (with the highest rainfall) are May, June and July (1.1").
The driest month (with the least rainfall) is September (0.39").

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Average rainfall days
Crystal Lake, CT

Average rainfall days - Crystal Lake, CT

The month with the highest number of rainy days is June (12.1 days).
Months with the least rainy days are January and February (5.5 days).

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Average snowfall
Crystal Lake, CT

Average snowfall - Crystal Lake, CT

The month with the highest snowfall is February (1.5").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Crystal Lake, CT

Average snowfall days - Crystal Lake, CT

The month with the highest number of snowfall days is February (6.4 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Crystal Lake, CT

Average daylight / Average sunshine - Crystal Lake, CT

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days
Crystal Lake, CT

Average sunshine days - Crystal Lake, CT

The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (15.7 days).

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Average UV index
Crystal Lake, CT

Average UV index - Crystal Lake, 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).

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Average visibility
Crystal Lake, CT

Average visibility - Crystal Lake, CT

Months with the highest visibility are January, March, April, October, November and December (6mi).
Months with the lowest visibility are February, May, June, July, August and September (5mi).

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