The climate of New Castle
resides geographically within the purview of a Köppen climate classification, consequently subjected to a Humid Subtropical climate with no dry season. Understanding the climate throughout the year involves analyzing a series of parameters including temperature, humidity, rainfall amongst others.
Average high temperatures fluctuate between a sober 37.8°F in January
and a sizzling 84.9°F in July
. The year unfolds with a steady rise in temperature from January's chill tumbling all the way to July's peak heat. Similarly, low temperatures move from a frigid 26.1°F in January to a balmy 68.5°F in the same month (July).
Rainfall ranges from 1.38" in January to 2.83" in August
. Interestingly, while rainfall peaks in August, the amount of rainfall days is highest in May
peaking at 16.8 days. Observing the cycle of humidity, it stays consistently within the seventies all year round, from a low of 72% in April
to a high of 78% in October
Wind speeds present a downward trend from January to July, then pick up again towards the end of the year, underlining a cyclical pattern. The UV index surges from 2 in February
to 6 from May to August, hinting at the increased sun intensity during the summer months.
The Best Time to Visit New Castle
The period from May
is when New Castle
shines its brightest. Average high temperatures range within the 70s and 80s°F, producing a warm and pleasant atmosphere. Combined with a humidity level typically in the mid-seventies, visitors can expect a satisfying, not excessive, level of moisture in the air.
Notably, this period offers the most sunlight with around 14.5 hours of daylight and about 10 hours of sunshine per day. The UV index also hits its annual peak during this season, indicating a higher intensity of sun rays and great weather for outdoor activities.
The Worst Time to Visit New Castle
The winter months, particularly between January
, are less inviting due to colder temperatures and reduced daylight hours. Temperatures can drop down to a chilly 37.8°F and 41.7°F respectively. Further dampening the mood, daylight hours during this period show a decrease, dwindling down to just 9.7 hours in January.
Moreover, the UV index hits its annual low, further suggesting a dimmed sun and lesser opportunities for outdoor pursuits. Snowfall is also a regular occurrence during these months, which puts a damper on travel plans.
Spring Weather in New Castle
The months of March
, and May
bring the advent of spring to New Castle
with temperatures gradually inching upwards. High temperatures range from 50°F in March to 72°F in May while lows hover between 35.1°F and 55°F. Rainfall during this time sees a steady increase, peaking at 2.05" in May.
Despite the bumps in rainfall, daylight hours increase significantly, making for longer, brighter days. An upswing in the UV index from 3 in March to 6 in May underlines the intensifying sunlight as spring progresses.
Summer Weather in New Castle
The months from June
in New Castle
are characterized by high temperatures and heightened humidity. Temperatures during this period range from highs of 80.1°F in June to 84.9°F in July
while lows are from 63.1°F to 68.5°F. Rainfall hits an annual high in August at 2.83".
Not to be outdone, this season also boasts the highest UV index of 6 and the longest days with daylight hours peaking at 14.9 in June. The increase in temperatures and sunlight combined with the peak UV index encapsulates the essence of the city's summers.
Autumn Weather in New Castle
In autumn months, from September
, there is a noticeable downturn in temperatures from the summer highs to much colder readings. High temperatures drop from 76.3°F to 53.2°F, while lows go from 60.6°F to 39.6°F.
Rainfall sees an upward spiral in these months, ultimately peaking in November at 1.42". Despite these falling readings, daylight hours remain substantial with approximately 12 hours of daylight in September descending to 10 hours in November.
Winter Weather in New Castle
The winter months, December
, bring the chill to New Castle
with temperatures falling significantly. High temperatures drop to below 50°F, with January
being the coldest month at 37.8°F. Low temperatures hit their annual lows plunging to 26.1°F in January. Snowfall events occur more frequently during this time, with January and February experiencing 1.69" and 1.3", respectively. Daylight hours shrink to their lowest in December at 9.4 hours.
Weather in January
experiences a chilly start to the year in January
. Snowfall is common, reaching a peak monthly average of 1.69", resulting in snowfall days that are the highest in the year at 5.2 days. The city's weather is characterized by a mixture of clear, cloudy, and overcast days. Weather in January »
Weather in February
continues the frigid trend initiated in January
. Generally, the weather conditions display minor variations from January, although there are slight increases in temperature. One is likely to notice more rainy days in this month compared to January. Weather in February »
Weather in March
sees a gradual change in weather in New Castle
, with both temperatures and rainfall witnessing a rise. A significant increase is observed in the average low temperature, which jumps from 28.4°F in February
to 35.1°F in this month. Weather in March »
Weather in April
The transition from spring to summer starts with April
in New Castle
. The city's weather is characterized mostly by rainy days and increasing temperatures. While rainfall does not peak, it is distributed over most days, resulting in an increase in relative humidity levels from the prior month. Weather in April »
Weather in May
in New Castle
signifies the true arrival of summer. Weather in this month is characterized by the highest average low temperature of 55°F observed in the year so far. Residents enjoy pleasant mornings and late evenings thanks to the warm weather. Weather in May »
Weather in June
marks the onset of the hottest months in New Castle
. The city's weather conditions display a consistency in terms of elevated temperatures and prolonged daylight hours. There is a definitive increase in sea temperature which indicates the arrival of the beach season. Weather in June »
Weather in July
is the peak of summer in New Castle
, setting record highs in terms of several weather parameters. It registers the highest average high temperature of the year at 84.9°F. Sunshine hours are also at their maximum, providing more opportunities for outdoor activities. Weather in July »
Weather in August
In New Castle
continues the warm weather pattern established in July
. The city's weather is characterized by high temperatures, similar to those in July. Despite these high temperatures, August witnesses the highest rainfall of the year at 2.83", providing relief from the sun. Weather in August »
Weather in September
in New Castle
signifies the onset of fall, with a noticeable drop in temperatures. This month witnesses the lowest rainfall of the second half of the year at 1.42". The weather changes dramatically with a decrease in daylight hours. Weather in September »
Weather in October
brings in the charming weather of fall in New Castle
. The average high temperature drops significantly, leading to cooler days. Rainy days show a minor increase compared to September
. The fall foliage and the crisp weather make outdoor activities particularly enjoyable in this period. Weather in October »
Weather in November
ushers in the early onset of winter in New Castle
, leading to a further drop in temperature. The noticeable dip in the average high temperature from 64.8°F in October
to 53.2°F in November signifies the change. The first snow of the year is recorded, advancing the winter season. Weather in November »
Weather in December
in New Castle
is marked by the full arrival of winter. With temperatures further dropping, weather conditions become extremely cold. Snowfall of 0.51" is recorded, welcoming the year's most festive season. As the shortest daylight hours of the year occur, New Castle's days become chilly and nights, colder. Weather in December »