Climate and monthly weather forecast
New Castle, KY

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Weather in January

January, like December, in New Castle, Kentucky, is a wintry winter month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 25.3°F (-3.7°C). New Castle's coldest month, January, generally records average temperatures ranging from a high of 38.3°F (3.5°C) to a low of 25.3°F (-3.7°C). Weather in January »

Weather in February

February, the last month of the winter in New Castle, is a frosty month, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 28.2°F (-2.1°C). February's weather records an average high-temperature of a chilly 43°F (6.1°C), showing little deviation from January. Weather in February »

Weather in March

March, the first month of the spring in New Castle, is a fresh month, with an average temperature fluctuating between 36.7°F (2.6°C) and 53.2°F (11.8°C). In New Castle, stepping into March brings a temperature increase, moving up from February's frosty 43°F (6.1°C) to a cool 53.2°F (11.8°C). Weather in March »

Weather in April

April in New Castle, Kentucky, is an enjoyable spring month, with an average temperature fluctuating between 64.9°F (18.3°C) and 46°F (7.8°C). April's arrival brings a temperature shift, moving from a cool 53.2°F (11.8°C) in March to a comfortable 64.9°F (18.3°C). Weather in April »

Weather in May

May, the last month of the spring in New Castle, is a warm month, with an average temperature varying between 56.1°F (13.4°C) and 74.8°F (23.8°C). A rise in the average high-temperature is observed during May, moving from a comfortable 64.9°F (18.3°C) in April to a moderately hot 74.8°F (23.8°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in New Castle, Kentucky, with an average temperature varying between 82.9°F (28.3°C) and 63.3°F (17.4°C). June comes with a subtle rise, with the average high-temperature adjusting from a warm 74.8°F (23.8°C) in May to a still moderately hot 82.9°F (28.3°C). Weather in June »

Weather in July

July, like June, in New Castle, Kentucky, is a moderately hot summer month, with an average temperature varying between 85.6°F (29.8°C) and 66.4°F (19.1°C). New Castle records the warmest temperatures in July, averaging a high of 85.6°F (29.8°C) and a low of 66.4°F (19.1°C). The heat index in July is appraised at a torrid 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in New Castle, Kentucky, with an average temperature fluctuating between 65.1°F (18.4°C) and 84.7°F (29.3°C). The arrival of August records an average high-temperature of a still warm 84.7°F (29.3°C), closely related to the 85.6°F (29.8°C) observed in July. Weather in August »

Weather in September

September, the first month of the autumn in New Castle, is also a moderately hot month, with an average temperature fluctuating between 79°F (26.1°C) and 59.5°F (15.3°C). A moderate decline in average high-temperatures is noted in September, moving from 84.7°F (29.3°C) in August to a still moderately hot 79°F (26.1°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in New Castle, Kentucky, with an average temperature varying between 65.8°F (18.8°C) and 47.3°F (8.5°C). The arrival of October corresponds with a shift in temperature, down from a moderately hot 79°F (26.1°C) in September to a comfortable 65.8°F (18.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in New Castle, Kentucky, with an average temperature fluctuating between 52.9°F (11.6°C) and 36.7°F (2.6°C). New Castle's November weather features a mild decline in high-temperatures, reducing from a refreshing 65.8°F (18.8°C) in October to a cool 52.9°F (11.6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in New Castle, Kentucky, with an average temperature ranging between min 31.3°F (-0.4°C) and max 43.7°F (6.5°C). New Castle's December weather features a mild decline in high-temperatures, reducing from a cool 52.9°F (11.6°C) in November to a frosty 43.7°F (6.5°C). Weather in December »
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

In New Castle, January records the average lowest temperatures, peaking at 38.3°F (3.5°C) and reaching a low of 25.3°F (-3.7°C).

How much does it rain?

In New Castle, during the entire year, the rain falls for 147.9 days and collects up to 23.98" (609mm) of precipitation.

When does it snow?

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

How much does it snow in New Castle?

In New Castle, during the entire year, snow falls for 25.8 days and aggregates up to 6.02" (153mm) of snow.

What is the month with the least sunshine?

With an average of 4.2h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

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

What is the most humid month in New Castle?

The months with the highest humidity are February and December, with an average relative humidity of 81%.

When does it snow the most?

March is the month with the most snowfall. Snow falls for 3.7 days and accumulates 1.54" (39mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in New Castle?

The month with the most rainfall in New Castle is April, when the rain falls for 14.9 days and typically aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

When are the longest days?

June has the longest days of the year, with an average of 14h and 48min of daylight.

What are the months with the highest UV index?

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

What part of the year is the hottest?

The average temperatures reach their apex in July, averaging 85.6°F (29.8°C) at the high end and 66.4°F (19.1°C) at the low end.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.2h of sunshine.

What are the least humid months?

The months with the lowest humidity in New Castle are August through October, with an average relative humidity of 75%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11 days and accumulates 1.3" (33mm) of precipitation.

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

December has the shortest days of the year, with an average of 9h and 30min of daylight.

Average temperature
New Castle, KY

Average temperature - New Castle, KY

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure
New Castle, KY

Average pressure - New Castle, KY

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
New Castle, KY

Average wind speed - New Castle, KY

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity
New Castle, KY

Average humidity - New Castle, KY

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (75%).

Average rainfall
New Castle, KY

Average rainfall - New Castle, KY

The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days
New Castle, KY

Average rainfall days - New Castle, KY

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).

Average snowfall
New Castle, KY

Average snowfall - New Castle, KY

The month with the highest snowfall is March (1.54").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
New Castle, KY

Average snowfall days - New Castle, KY

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
New Castle, KY

Average daylight / Average sunshine - New Castle, KY

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days
New Castle, KY

Average sunshine days - New Castle, KY

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (11.9 days).

Average UV index
New Castle, KY

Average UV index - New Castle, KY

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

Average visibility
New Castle, KY

Average visibility - New Castle, KY

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

New Castle, Kentucky, USA

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