Annual mean 11°C · wettest around June · prevailing wind W
Warmest
26.9 °C
Coldest
-0.8 °C
Wettest
41%
Windiest
4.5 m/s
Prevailing
W
3.6 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 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -4°C. New Castle has no sharply defined rainy season: the chance of rain on a given day runs from 19% in January, the driest month, to 34% in June, the wettest. Winds in New Castle are highest in March, averaging 3.3 m/s (12 km/h), and lightest in August, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in New Castle come in July, when the sky is typically 43% covered; January is the cloudiest month, at 74%.
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
-1°C
-4°C
-6°C
19%
74%
3.1 m/s
1
0
6
February
3°C
-2°C
-3°C
24%
65%
3.2 m/s
1
0
14
March
7°C
1°C
2°C
22%
58%
3.3 m/s
7
0
29
April
13°C
6°C
9°C
28%
57%
3.1 m/s
26
2
50
May
19°C
12°C
17°C
32%
53%
2.4 m/s
56
14
61
June
24°C
16°C
24°C
34%
47%
2.2 m/s
64
36
42
July
27°C
19°C
27°C
33%
43%
1.8 m/s
49
60
16
August
26°C
17°C
26°C
34%
45%
1.7 m/s
59
53
24
September
23°C
14°C
22°C
34%
44%
1.8 m/s
67
31
50
October
16°C
9°C
14°C
23%
53%
2.2 m/s
40
7
64
November
8°C
3°C
3°C
24%
57%
2.8 m/s
8
0
30
December
3°C
-1°C
-2°C
23%
70%
2.9 m/s
1
0
11
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 -1°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -4°C to 19°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around June and least likely around January. 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 2°CLow -2°CRain 22%
Winter in New Castle has typical daily highs of about 2°C and lows of about -2°C, with a 22% chance of rain on a given day.
New Castle weather in springMarch to May
High 13°CLow 6°CRain 27%
Spring in New Castle has typical daily highs of about 13°C and lows of about 6°C, with a 27% chance of rain on a given day.
New Castle weather in summerJune to August
High 25°CLow 17°CRain 34%
Summer in New Castle has typical daily highs of about 25°C and lows of about 17°C, with a 34% chance of rain on a given day.
New Castle weather in autumnSeptember to November
High 15°CLow 8°CRain 27%
Autumn in New Castle has typical daily highs of about 15°C and lows of about 8°C, with a 27% 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 19% in January, the driest month, to 34% in June, the wettest.
What time of year is New Castle windiest?
Winds in New Castle are highest in March, averaging 3.3 m/s (12 km/h), and lightest in August, at 1.7 m/s (6 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 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -4°C.