Annual mean 12°C · wettest around December · prevailing wind W
Warmest
28.1 °C
Coldest
1.5 °C
Wettest
13%
Windiest
4.8 m/s
Prevailing
W
3.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in New Castle over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C. New Castle has no sharply defined rainy season: the chance of rain on a given day runs from 9% in June, the driest month, to 15% in December, the wettest. Winds in New Castle are highest in March, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in New Castle come in November, when the sky is typically 41% covered; January is the cloudiest month, at 53%.
Month by month New Castle climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
2°C
-2°C
-4°C
11%
53%
3.6 m/s
1
0
7
February
4°C
-1°C
-2°C
13%
49%
3.4 m/s
1
0
14
March
8°C
2°C
2°C
12%
49%
3.8 m/s
5
0
28
April
13°C
7°C
9°C
13%
53%
3.6 m/s
20
2
56
May
19°C
13°C
16°C
14%
52%
3.0 m/s
56
11
72
June
25°C
18°C
24°C
9%
44%
2.8 m/s
71
38
47
July
28°C
22°C
29°C
10%
42%
2.5 m/s
40
66
11
August
27°C
20°C
27°C
10%
43%
2.5 m/s
54
59
22
September
23°C
16°C
22°C
11%
45%
2.6 m/s
73
29
55
October
17°C
11°C
15°C
12%
48%
2.8 m/s
50
6
75
November
10°C
5°C
6°C
11%
41%
3.2 m/s
12
0
41
December
4°C
1°C
-1°C
15%
51%
3.2 m/s
0
0
14
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short New Castle weather by season
Year round, New Castle has days of about 2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -2°C to 22°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around December and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
New Castle weather in winterDecember to February
High 3°CLow -0°CRain 13%
Winter in New Castle has typical daily highs of about 3°C and lows of about -0°C, with a 13% chance of rain on a given day.
New Castle weather in springMarch to May
High 13°CLow 7°CRain 13%
Spring in New Castle has typical daily highs of about 13°C and lows of about 7°C, with a 13% chance of rain on a given day.
New Castle weather in summerJune to August
High 26°CLow 20°CRain 10%
Summer in New Castle has typical daily highs of about 26°C and lows of about 20°C, with a 10% chance of rain on a given day.
New Castle weather in autumnSeptember to November
High 17°CLow 11°CRain 11%
Autumn in New Castle has typical daily highs of about 17°C and lows of about 11°C, with a 11% chance of rain on a given day.
When is the rainy season in New Castle?
New Castle has no sharply defined rainy season: the chance of rain on a given day runs from 9% in June, the driest month, to 15% in December, the wettest.
What time of year is New Castle windiest?
Winds in New Castle are highest in March, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in New Castle year round?
The average temperature in New Castle over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C.