New Castle climate — normals and trends

Q: What is the climate of New Castle?

New Castle has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 1,029 mm of precipitation per year.

Q: What is the hottest day ever recorded in New Castle?

The hottest day measured in New Castle between 1940 and 2025 was 25 June 1988, reaching 38.8 °C.

Q: What is the coldest day in New Castle?

The coldest day measured in New Castle between 1940 and 2025 was 20 January 1985, at -30.7 °C.

Q: Does it snow in New Castle?

Yes. New Castle gets on average 60.7 cm of snow per year and has around 108 frost days.

Q: Has the climate of New Castle warmed?

Yes: New Castle warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in New Castle?

The wettest day measured in New Castle between 1940 and 2025 was 8 September 2018, with 100 mm of rain in 24 hours.

Q: What was the windiest day in New Castle?

The windiest day measured in New Castle between 1940 and 2025 was 26 January 1978, with winds reaching 57.9 km/h.

Q: What is the warmest month in New Castle?

The warmest month in New Castle is July (23.1 °C on average); the coldest is January (-3.0 °C).

Q: How much does it rain in New Castle?

New Castle receives on average 1,029 mm of precipitation per year, spread over about 126 rainy days.

Q: Is it sunny in New Castle?

New Castle gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

New Castle (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 1,029 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (23.1 °C on average) and the coldest is January (-3.0 °C). Rainfall peaks in May.

New Castle averages 108 frost days, 22 hot days (≥ 30 °C) and 126 rainy days per year.

New Castle has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The number of frost days there went from about 120 to 96 per year over the period.

The hottest day of the period reached 38.8 °C (on 25 June 1988) and the coldest -30.7 °C (on 20 January 1985).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

New CastleIndiana

coords: 39.93°, -85.37°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthSeptember

Mean daily temperature

10.8°C

Average daily high

15.6°C

Average daily low

6.2°C

Annual rainfall

1,029mm

Sunshine / day

8.7h

Mean relative humidity

71%

Average peak wind

20.3km/h

Seasonal range

26.1°C

Frost days (< 0 °C)

108 d/yr

Hot days (≥ 30 °C)

22 d/yr

Rainy days (≥ 1 mm)

126 d/yr

Annual snowfall

60.7 cm

Average feels-like high

13.7 °C

Average feels-like low

3.4 °C

Average peak gust

39.3 km/h

Tropical nights (≥ 20 °C)

30 d/yr

Solar radiation

15.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.36 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

38.8 °C

25 June 1988

Coldest day

-30.7 °C

20 January 1985

Wettest day

100 mm

8 September 2018

Windiest day

57.9 km/h

26 January 1978

Strongest gust

112.3 km/h

10 November 1998

Hottest feels-like

42.8 °C

14 July 1995

Coldest feels-like

-39.1 °C

20 January 1985

Snowiest day

24.9 cm

25 February 1979

Sunniest day

14.7 h

11 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	33.1 °C23 June 2025	-21.3 °C15 January 2025	11.5 °C	1,069 mm	29	103
2024	33.6 °C30 August 2024	-19.5 °C15 January 2024	12.7 °C	1,097 mm	27	76
2023	32.5 °C3 June 2023	-12.7 °C1 February 2023	12.6 °C	929 mm	17	76
2022	34.0 °C22 June 2022	-23.6 °C23 December 2022	11.6 °C	997 mm	24	100
2021	32.6 °C24 August 2021	-17.1 °C17 February 2021	12.3 °C	1,094 mm	31	100
2020	33.2 °C6 July 2020	-14.4 °C14 February 2020	12.2 °C	1,040 mm	31	87
2019	32.7 °C20 July 2019	-23.7 °C30 January 2019	11.7 °C	1,218 mm	34	105
2018	32.7 °C18 June 2018	-27.1 °C2 January 2018	11.6 °C	1,412 mm	30	118
2017	32.2 °C12 June 2017	-23.5 °C27 December 2017	12.2 °C	1,172 mm	15	83
2016	32.7 °C5 August 2016	-19.1 °C14 December 2016	12.3 °C	1,039 mm	29	93
2015	31.4 °C29 July 2015	-22.9 °C8 January 2015	11.4 °C	1,094 mm	10	91
2014	32.4 °C17 June 2014	-28.2 °C28 January 2014	9.8 °C	1,002 mm	9	115
2013	34.8 °C10 September 2013	-19.9 °C12 December 2013	10.7 °C	1,081 mm	15	122
2012	37.6 °C28 June 2012	-13.3 °C20 January 2012	13.0 °C	801 mm	55	92
2011	36.4 °C2 September 2011	-24.1 °C10 February 2011	11.8 °C	1,372 mm	41	96
2010	34.2 °C21 September 2010	-18.6 °C15 December 2010	11.6 °C	892 mm	48	104
2009	31.9 °C24 June 2009	-26.1 °C16 January 2009	10.8 °C	916 mm	5	101
2008	33.9 °C2 September 2008	-18.9 °C20 January 2008	10.8 °C	1,086 mm	17	114
2007	35.6 °C9 August 2007	-21.2 °C16 February 2007	11.9 °C	976 mm	38	107
2006	32.0 °C16 July 2006	-17.1 °C19 February 2006	11.8 °C	1,222 mm	13	90
2005	33.3 °C25 July 2005	-19.8 °C19 December 2005	11.3 °C	1,093 mm	29	102
2004	31.3 °C22 July 2004	-24.6 °C31 January 2004	11.1 °C	987 mm	9	98
2003	31.3 °C21 August 2003	-21.3 °C27 January 2003	10.2 °C	1,166 mm	7	112
2002	33.6 °C4 August 2002	-16.3 °C4 March 2002	11.6 °C	994 mm	37	111
2001	32.0 °C8 August 2001	-16.3 °C2 January 2001	11.6 °C	992 mm	16	92
2000	30.6 °C15 August 2000	-22.7 °C21 January 2000	10.5 °C	1,192 mm	3	116
1999	36.0 °C30 July 1999	-24.9 °C5 January 1999	11.8 °C	849 mm	41	99
1998	33.5 °C6 September 1998	-14.6 °C1 January 1998	12.5 °C	1,079 mm	17	86
1997	34.1 °C26 July 1997	-22.7 °C14 January 1997	10.1 °C	1,050 mm	13	109
1996	32.7 °C7 August 1996	-21.9 °C4 February 1996	10.0 °C	1,388 mm	21	122
1995	34.2 °C14 July 1995	-18.5 °C12 February 1995	10.8 °C	1,101 mm	36	109
1994	35.2 °C18 June 1994	-30.4 °C19 January 1994	11.1 °C	864 mm	24	102
1993	32.7 °C28 July 1993	-22.0 °C18 February 1993	10.4 °C	1,209 mm	20	108
1992	32.2 °C17 June 1992	-24.5 °C16 January 1992	10.4 °C	1,032 mm	5	100
1991	35.4 °C2 August 1991	-18.7 °C22 January 1991	12.1 °C	832 mm	43	105
1990	33.4 °C4 July 1990	-18.4 °C24 December 1990	11.9 °C	1,301 mm	14	88
1989	33.1 °C10 July 1989	-28.9 °C22 December 1989	10.2 °C	1,085 mm	15	115
1988	38.8 °C25 June 1988	-20.4 °C6 February 1988	10.9 °C	906 mm	55	113
1987	34.6 °C2 August 1987	-19.1 °C24 January 1987	11.7 °C	873 mm	33	104
1986	32.9 °C17 July 1986	-17.2 °C27 January 1986	11.3 °C	1,093 mm	19	93
1985	33.1 °C7 September 1985	-30.7 °C20 January 1985	10.7 °C	1,030 mm	20	103
1984	35.1 °C10 July 1984	-27.1 °C21 January 1984	10.7 °C	1,028 mm	19	104
1983	36.6 °C19 August 1983	-26.7 °C24 December 1983	11.3 °C	1,104 mm	57	99
1982	31.7 °C3 August 1982	-29.4 °C17 January 1982	10.5 °C	1,229 mm	7	115
1981	32.8 °C13 July 1981	-24.7 °C12 February 1981	10.4 °C	1,087 mm	10	114
1980	35.9 °C15 July 1980	-21.8 °C2 March 1980	10.3 °C	1,183 mm	23	122
1979	31.1 °C7 August 1979	-24.6 °C5 February 1979	9.6 °C	1,258 mm	3	113
1978	33.6 °C27 June 1978	-20.4 °C10 January 1978	9.5 °C	978 mm	20	110
1977	34.8 °C6 July 1977	-28.7 °C17 January 1977	10.6 °C	1,046 mm	33	103
1976	34.4 °C14 July 1976	-19.6 °C9 January 1976	10.0 °C	742 mm	11	127
1975	32.4 °C31 July 1975	-23.4 °C10 February 1975	11.1 °C	977 mm	23	114
1974	33.5 °C14 July 1974	-20.0 °C2 January 1974	10.5 °C	1,122 mm	9	102
1973	32.6 °C27 August 1973	-18.8 °C22 December 1973	11.6 °C	1,218 mm	22	94
1972	32.1 °C22 July 1972	-26.4 °C16 January 1972	9.8 °C	1,086 mm	10	120
1971	34.9 °C27 June 1971	-21.0 °C2 February 1971	10.9 °C	753 mm	17	117
1970	33.2 °C30 June 1970	-25.0 °C22 January 1970	10.5 °C	884 mm	12	107
1969	32.3 °C16 July 1969	-18.9 °C4 January 1969	10.0 °C	912 mm	15	125
1968	31.9 °C9 June 1968	-25.4 °C1 January 1968	10.3 °C	991 mm	17	108
1967	32.1 °C2 August 1967	-21.2 °C25 February 1967	10.1 °C	1,050 mm	8	111
1966	33.9 °C2 July 1966	-24.5 °C30 January 1966	9.9 °C	823 mm	31	113
1965	32.8 °C24 July 1965	-24.8 °C17 January 1965	10.6 °C	916 mm	16	113
1964	35.3 °C3 August 1964	-20.2 °C14 January 1964	10.9 °C	928 mm	35	112
1963	31.7 °C3 August 1963	-28.4 °C23 January 1963	9.5 °C	832 mm	8	117
1962	34.8 °C20 August 1962	-23.4 °C10 January 1962	10.1 °C	795 mm	19	121
1961	31.7 °C1 July 1961	-24.6 °C25 January 1961	10.1 °C	1,027 mm	10	114
1960	32.5 °C4 September 1960	-25.0 °C23 December 1960	9.6 °C	875 mm	9	125
1959	33.0 °C27 June 1959	-23.0 °C5 January 1959	11.2 °C	1,067 mm	35	119
1958	30.4 °C5 July 1958	-25.2 °C10 December 1958	9.5 °C	1,009 mm	4	115
1957	32.4 °C19 July 1957	-22.8 °C16 January 1957	10.7 °C	1,241 mm	16	111
1956	32.6 °C27 July 1956	-18.6 °C31 January 1956	10.8 °C	1,029 mm	13	112
1955	33.5 °C27 July 1955	-22.2 °C29 January 1955	11.1 °C	983 mm	38	116
1954	37.7 °C14 July 1954	-16.7 °C12 January 1954	11.6 °C	841 mm	45	110
1953	36.2 °C1 September 1953	-18.7 °C18 December 1953	11.8 °C	727 mm	45	103
1952	34.4 °C29 June 1952	-15.2 °C30 January 1952	11.2 °C	1,032 mm	39	116
1951	35.0 °C31 August 1951	-28.1 °C2 February 1951	10.1 °C	1,106 mm	14	114
1950	31.6 °C26 June 1950	-19.2 °C18 December 1950	9.7 °C	1,397 mm	6	123
1949	33.1 °C4 July 1949	-18.2 °C30 January 1949	11.3 °C	1,252 mm	22	100
1948	34.6 °C27 August 1948	-21.8 °C28 January 1948	10.5 °C	1,261 mm	21	105
1947	33.7 °C6 August 1947	-19.0 °C5 February 1947	9.6 °C	919 mm	26	130
1946	32.5 °C19 July 1946	-23.4 °C22 January 1946	11.2 °C	944 mm	6	91
1945	32.5 °C30 August 1945	-22.3 °C10 January 1945	10.1 °C	1,116 mm	15	108
1944	34.2 °C11 July 1944	-23.4 °C13 February 1944	10.5 °C	834 mm	20	116
1943	34.0 °C1 September 1943	-22.9 °C8 March 1943	9.4 °C	766 mm	12	138
1942	33.7 °C2 August 1942	-21.3 °C8 January 1942	9.8 °C	852 mm	7	125
1941	33.4 °C11 August 1941	-18.2 °C19 February 1941	10.1 °C	803 mm	19	122
1940	33.8 °C29 July 1940	-26.9 °C19 January 1940	8.7 °C	869 mm	24	135

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

16.4 °C

+0.8 °C

Hot days (≥ 30 °C)

29 d/yr

Frost days (< 0 °C)

103 d/yr

-5

Annual rainfall

1069 mm

+40 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	-1.6 °C	-2.6 °C	40 mm	-34 mm
Feb	3.4 °C	+0.3 °C	80 mm	+11 mm
Mar	14.2 °C	+5.1 °C	108 mm	+7 mm
Apr	17.4 °C	+1.4 °C	152 mm	+43 mm
May	20.5 °C	-0.9 °C	96 mm	-14 mm
Jun	27.7 °C	+1.5 °C	191 mm	+93 mm
Jul	29.0 °C	+1.2 °C	115 mm	+26 mm
Aug	26.1 °C	-1.1 °C	52 mm	-24 mm
Sep	26.1 °C	+2.1 °C	48 mm	-20 mm
Oct	19.1 °C	+1.4 °C	76 mm	+5 mm
Nov	10.0 °C	+0.2 °C	54 mm	-31 mm
Dec	3.6 °C	+0.2 °C	57 mm	-23 mm

The year's extremes

Hottest day

33.1 °C

23 Jun 2025

Coldest day

-21.3 °C

15 Jan 2025

Wettest day

48.9 mm

5 Apr 2025

Windiest day

43.0 km/h

26 Nov 2025

Strongest gust

88.2 km/h

3 Apr 2025

Hottest feels-like

37.9 °C

23 Jun 2025

Coldest feels-like

-26.7 °C

15 Jan 2025

Snowiest day

5.7 cm

16 Feb 2025

Sunniest day

14.7 h

11 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of New Castle?

New Castle has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 1,029 mm of precipitation per year.

What is the hottest day ever recorded in New Castle?

The hottest day measured in New Castle between 1940 and 2025 was 25 June 1988, reaching 38.8 °C.

What is the coldest day in New Castle?

The coldest day measured in New Castle between 1940 and 2025 was 20 January 1985, at -30.7 °C.

Does it snow in New Castle?

Yes. New Castle gets on average 60.7 cm of snow per year and has around 108 frost days.

Has the climate of New Castle warmed?

Yes: New Castle warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in New Castle?

The wettest day measured in New Castle between 1940 and 2025 was 8 September 2018, with 100 mm of rain in 24 hours.

What was the windiest day in New Castle?

The windiest day measured in New Castle between 1940 and 2025 was 26 January 1978, with winds reaching 57.9 km/h.

What is the warmest month in New Castle?

The warmest month in New Castle is July (23.1 °C on average); the coldest is January (-3.0 °C).

How much does it rain in New Castle?

New Castle receives on average 1,029 mm of precipitation per year, spread over about 126 rainy days.

Is it sunny in New Castle?

New Castle gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

What is the biggest single-day snowfall in New Castle?

The heaviest 24-hour snowfall measured in New Castle between 1940 and 2025 was 25 February 1979, with 24.9 cm.

Are there tropical nights in New Castle?

Yes: New Castle has on average 30 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in New Castle?

In New Castle, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 14 July 1995, and the lowest was -39.1 °C on 20 January 1985.

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