Monthly weather forecast and climate
Grantville, CT

Weather in January

January, like December, is a freezing cold winter month in Grantville, Connecticut, with average temperature fluctuating between 30.4°F (-0.9°C) and 18°F (-7.8°C). January is the coldest month, with an average high-temperature of 30.4°F (-0.9°C) and an average low-temperature of 18°F (-7.8°C). Weather in January »

Weather in February

The last month of the winter, February, is a cold month in Grantville, Connecticut, with average temperature varying between 19.2°F (-7.1°C) and 33.8°F (1°C). In Grantville, Connecticut, the average high-temperature is relatively the same as in January - a wintry 33.8°F (1°C). Weather in February »

Weather in March

The first month of the spring, March, is still a cold month in Grantville, Connecticut, with average temperature varying between 26.8°F (-2.9°C) and 41.9°F (5.5°C). In March, the average high-temperature marginally rises, from 33.8°F (1°C) in February, to a still wintry 41.9°F (5.5°C). Weather in March »

Weather in April

April in Grantville, Connecticut, is a moderate spring month, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 37.6°F (3.1°C). In Grantville, the average high-temperature increases, from a cold 41.9°F (5.5°C) in March, to a moderate 55.4°F (13°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Grantville, Connecticut, with average temperature varying between 67.1°F (19.5°C) and 47.3°F (8.5°C). In May, the average high-temperature increases, from a moderate 55.4°F (13°C) in April, to an enjoyable 67.1°F (19.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Grantville, Connecticut, with average temperature ranging between max 74.8°F (23.8°C) and min 55°F (12.8°C). In June, the average high-temperature slightly increases, from an enjoyable 67.1°F (19.5°C) in May, to a moderately hot 74.8°F (23.8°C). Weather in June »

Weather in July

July, like June, in Grantville, Connecticut, is a moderately hot summer month, with average temperature varying between 81°F (27.2°C) and 61.2°F (16.2°C). The warmest month is July, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 61.2°F (16.2°C). The average heat index is calculated to 85.8°F (29.9°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Grantville, Connecticut, with average temperature varying between 59.7°F (15.4°C) and 78.8°F (26°C). In August, the average high-temperature is essentially the same as in July - a still warm 78.8°F (26°C). Weather in August »

Weather in September

September, the first month of the autumn, in Grantville, is also an agreeable month, with temperature in the range of an average high of 71.8°F (22.1°C) and an average low of 53.1°F (11.7°C). In Grantville, the average high-temperature slightly decreases, from a moderately hot 78.8°F (26°C) in August, to an agreeable 71.8°F (22.1°C). Weather in September »

Weather in October

October, the same as September, in Grantville, Connecticut, is a moderate autumn month, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 58.5°F (14.7°C). In Grantville, the average high-temperature decreases, from an agreeable 71.8°F (22.1°C) in September, to a moderate 58.5°F (14.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Grantville, Connecticut, with average temperature varying between 46.4°F (8°C) and 33.3°F (0.7°C). In Grantville, Connecticut, the average high-temperature in November decreases, from a mild 58.5°F (14.7°C) in October, to a frosty 46.4°F (8°C). Weather in November »

Weather in December

December, the first month of the winter, in Grantville, is still a cold month, with average temperature ranging between min 25.3°F (-3.7°C) and max 36.1°F (2.3°C). In December, the average high-temperature decreases, from a frosty 46.4°F (8°C) in November, to a cold 36.1°F (2.3°C). Weather in December »
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FAQ

What is the coldest month in Grantville?

The coldest month in Grantville is January, with an average high-temperature of 30.4°F (-0.9°C) and an average low-temperature of 18°F (-7.8°C).

How many days does it rain in Grantville?

Throughout the year, there are 157.2 rainfall days, and 33.31" (846mm) of precipitation is accumulated.

When does it snow in Grantville?

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

How many days does it snow in Grantville?

In Grantville, Connecticut, during the entire year, snow falls for 45.3 days, and aggregates up to 25.63" (651mm) of snow.

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

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

What is the most humid month in Grantville?

February is the most humid month, with an average relative humidity of 82%.

What is the snowiest month in Grantville?

The month with the most snowfall is February when snow falls for 11.3 days and typically aggregates up to 6.38" (162mm) of snow.

What is the month with the least sunshine in Grantville?

With an average of 4.2h of sunshine, February has the least sunshine of the year in Grantville.

What is the least humid month in Grantville?

The least humid month in Grantville, Connecticut, is April, with an average relative humidity of 74%.

When it does not snow in Grantville?

In Grantville, Connecticut, snow does not fall in June through September.

When are the longest days in Grantville?

With an average of 15.2h of daylight, June has the longest days of the year in Grantville.

When is the highest UV index in Grantville?

With an average maximum UV index of 6, June is the month with the highest UV index in Grantville, Connecticut.

What is the warmest month in Grantville?

July is the warmest month, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 61.2°F (16.2°C).

What month has the most sunshine in Grantville?

July has the most sunshine of the year in Grantville, Connecticut, with an average of 10h of sunshine.

What is the driest month in Grantville?

The month with the least rainfall is September when the rain falls for 13 days and typically collects 2.09" (53mm) of precipitation.

What is the rainiest month in Grantville?

Months with the most rainfall are October and December, with an average 3.31" (84mm) of precipitation.

What is the month with the shortest days in Grantville?

With an average of 9.2h of daylight, December has the shortest days of the year.

Average temperature
Grantville, CT

Average temperature - Grantville, CT

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure
Grantville, CT

Average pressure - Grantville, CT

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
Grantville, CT

Average wind speed - Grantville, CT

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average rainfall
Grantville, CT

Average rainfall - Grantville, CT

The wettest months (with the highest rainfall) are October and December (3.31").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days
Grantville, CT

Average rainfall days - Grantville, CT

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (7.1 days).

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Average snowfall
Grantville, CT

Average snowfall - Grantville, CT

The month with the highest snowfall is February (6.38").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Grantville, CT

Average snowfall days - Grantville, CT

The month with the highest number of snowfall days is February (11.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Grantville, CT

Average daylight / Average sunshine - Grantville, 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).

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 4.2h).

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Average sunshine days
Grantville, CT

Average sunshine days - Grantville, CT

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index
Grantville, CT

Average UV index - Grantville, CT

The month with the highest UV index is June (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
Grantville, CT

Average visibility - Grantville, CT

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

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