Climate and monthly weather forecast
New Castle, IN

Weather in January

January, the same as December, is a wintry winter month in New Castle, Indiana, with an average temperature ranging between max 32.2°F (0.1°C) and min 20.5°F (-6.4°C). With an average high-temperature of 32.2°F (0.1°C) and an average low-temperature of 20.5°F (-6.4°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in New Castle, is another cold month, with an average temperature ranging between max 36.9°F (2.7°C) and min 24.1°F (-4.4°C). In New Castle, Indiana, the average high-temperature in February is relatively the same as in January - a still cold 36.9°F (2.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in New Castle, Indiana, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 33.6°F (0.9°C). In March, the average high-temperature increases from a cold 36.9°F (2.7°C) in February to a chilly 48.6°F (9.2°C). Weather in March »

Weather in April

April is a moderate spring month in New Castle, Indiana, with an average temperature fluctuating between 60.4°F (15.8°C) and 44.1°F (6.7°C). In April, the average high-temperature increases from a frosty 48.6°F (9.2°C) in March to a mild 60.4°F (15.8°C). Weather in April »

Weather in May

May, the last month of the spring in New Castle, is an agreeable month, with an average temperature ranging between min 54.7°F (12.6°C) and max 71.2°F (21.8°C). In New Castle, the average high-temperature in May rises from a mild 60.4°F (15.8°C) in April to a pleasant 71.2°F (21.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in New Castle, Indiana, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 62.2°F (16.8°C). In June, the average high-temperature slightly increases from a pleasant 71.2°F (21.8°C) in May to a moderately hot 78.1°F (25.6°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in New Castle, Indiana, with an average temperature fluctuating between 64.4°F (18°C) and 81°F (27.2°C). July is the warmest month, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C). In July, the average heat index is calculated to be a tropical 86.7°F (30.4°C). Weather in July »

Weather in August

August, the last month of the summer in New Castle, is another warm month, with an average temperature varying between 79.3°F (26.3°C) and 62.2°F (16.8°C). In August, the average high-temperature is almost the same as in July - a still warm 79.3°F (26.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in New Castle, Indiana, with an average temperature fluctuating between 74.3°F (23.5°C) and 56.8°F (13.8°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 74.3°F (23.5°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in New Castle, Indiana, with an average temperature ranging between max 62.1°F (16.7°C) and min 46.6°F (8.1°C). In New Castle, the average high-temperature in October decreases from a warm 74.3°F (23.5°C) in September to a comfortable 62.1°F (16.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in New Castle, Indiana, with an average temperature ranging between max 48.6°F (9.2°C) and min 34.9°F (1.6°C). In New Castle, the average high-temperature in November drops from a comfortable 62.1°F (16.7°C) in October to a frosty 48.6°F (9.2°C). Weather in November »

Weather in December

December, the first month of the winter in New Castle, is also a wintry month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 37.9°F (3.3°C). In December, the average high-temperature decreases from a chilly 48.6°F (9.2°C) in November to a cold 37.9°F (3.3°C). Weather in December »
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FAQ

What is the coldest month in New Castle?

January is the coldest month in New Castle, Indiana, with an average high-temperature of 32.2°F (0.1°C) and an average low-temperature of 20.5°F (-6.4°C).

What is the most humid month in New Castle?

January and December, with an average relative humidity of 83%, are most humid months.

How many days does it rain in New Castle?

In New Castle, during the entire year, the rain falls for 169.4 days and collects up to 31.77" (807mm) of precipitation.

When does it snow in New Castle?

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

What is the snowiest month in New Castle?

The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 3.31" (84mm) of snow.

How many days does it snow in New Castle?

In New Castle, during the entire year, snow falls for 42.7 days and aggregates up to 13.82" (351mm) of snow.

What is the month with the least sunshine in New Castle?

With an average of 3.6h of sunshine, January has the least sunshine of the year in New Castle.

What is the driest month in New Castle?

February is the month with the least rainfall in New Castle. Rain falls for 8.8 days and accumulates 1.85" (47mm) of precipitation.

When is Daylight Saving Time (DST) in New Castle?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in New Castle, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in New Castle?

May is the month with the most rainfall in New Castle, Indiana. Rain falls for 19.7 days and accumulates 3.9" (99mm) of precipitation.

When it does not snow in New Castle?

In New Castle, snow does not fall in May through September.

What is the month with the highest UV index in New Castle?

May through July, with an average maximum UV index of 6, are months with the highest UV index in New Castle, Indiana.

When are the longest days in New Castle?

The month with the longest days is June, with an average of 14h and 58min of daylight.

What month has the most sunshine in New Castle?

With an average of 10.1h of sunshine, June has the most sunshine of the year in New Castle.

What is the warmest month in New Castle?

The warmest month in New Castle, Indiana, is July, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C).

What is the least humid month in New Castle?

The least humid month in New Castle, Indiana, is October, with an average relative humidity of 74%.

What is the month with the shortest days in New Castle?

December has the shortest days of the year in New Castle, with an average of 9h and 23min of daylight.

When is the lowest UV index in New Castle?

With an average maximum UV index of 1, December is the month with the lowest UV index.

Average temperature
New Castle, IN

Average temperature - New Castle, IN

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32.2°F).

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure
New Castle, IN

Average pressure - New Castle, IN

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
New Castle, IN

Average wind speed - New Castle, IN

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity
New Castle, IN

Average humidity - New Castle, IN

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall
New Castle, IN

Average rainfall - New Castle, IN

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.85").

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Average rainfall days
New Castle, IN

Average rainfall days - New Castle, IN

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall
New Castle, IN

Average snowfall - New Castle, IN

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
New Castle, IN

Average snowfall days - New Castle, IN

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
New Castle, IN

Average daylight / Average sunshine - New Castle, IN

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days
New Castle, IN

Average sunshine days - New Castle, IN

The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is May (9.1 days).

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Average visibility
New Castle, IN

Average visibility - New Castle, IN

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

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