Derby climate — normals and trends

Q: What is the climate of Derby?

Derby has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.9 °C and it receives 867 mm of precipitation per year.

Q: What is the hottest day ever recorded in Derby?

The hottest day measured in Derby between 1940 and 2025 was 27 July 2011, reaching 42.7 °C.

Q: What is the coldest day in Derby?

The coldest day measured in Derby between 1940 and 2025 was 4 January 1947, at -31.7 °C.

Q: Does it snow in Derby?

Yes. Derby gets on average 31.0 cm of snow per year and has around 89 frost days.

Q: Has the climate of Derby warmed?

Yes: Derby warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Derby?

The wettest day measured in Derby between 1940 and 2025 was 15 October 1980, with 108 mm of rain in 24 hours.

Q: What was the windiest day in Derby?

The windiest day measured in Derby between 1940 and 2025 was 21 February 1976, with winds reaching 58.5 km/h.

Q: What is the warmest month in Derby?

The warmest month in Derby is July (27.0 °C on average); the coldest is January (-0.3 °C).

Q: How much does it rain in Derby?

Derby receives on average 867 mm of precipitation per year, spread over about 91 rainy days.

Q: Is it sunny in Derby?

Derby gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

Derby (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.9 °C and it receives 867 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 (27.0 °C on average) and the coldest is January (-0.3 °C). Rainfall peaks in May.

Derby averages 89 frost days, 79 hot days (≥ 30 °C) and 91 rainy days per year.

Derby has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The number of frost days there went from about 97 to 81 per year over the period.

The hottest day of the period reached 42.7 °C (on 27 July 2011) and the coldest -31.7 °C (on 4 January 1947).

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

DerbyKansas

coords: 37.55°, -97.27°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthJanuary

Mean daily temperature

13.9°C

Average daily high

19.7°C

Average daily low

8.5°C

Annual rainfall

867mm

Sunshine / day

9.5h

Mean relative humidity

65%

Average peak wind

22.5km/h

Seasonal range

27.3°C

Frost days (< 0 °C)

89 d/yr

Hot days (≥ 30 °C)

79 d/yr

Rainy days (≥ 1 mm)

91 d/yr

Annual snowfall

31.0 cm

Average feels-like high

18.0 °C

Average feels-like low

5.9 °C

Average peak gust

40.8 km/h

Tropical nights (≥ 20 °C)

66 d/yr

Solar radiation

16.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.27 · 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

42.7 °C

27 July 2011

Coldest day

-31.7 °C

4 January 1947

Wettest day

108 mm

15 October 1980

Windiest day

58.5 km/h

21 February 1976

Strongest gust

100.8 km/h

2 April 1982

Hottest feels-like

46.9 °C

26 June 1980

Coldest feels-like

-37.2 °C

4 January 1947

Snowiest day

24.9 cm

1 February 1983

Sunniest day

14.6 h

25 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.2 °C8 August 2025	-23.2 °C20 February 2025	14.5 °C	1,193 mm	76	81
2024	38.9 °C15 July 2024	-18.8 °C14 January 2024	15.7 °C	1,003 mm	100	62
2023	41.5 °C19 August 2023	-12.0 °C27 November 2023	15.4 °C	724 mm	115	80
2022	40.8 °C19 July 2022	-20.4 °C4 February 2022	14.7 °C	750 mm	116	98
2021	38.4 °C17 June 2021	-29.2 °C16 February 2021	14.9 °C	855 mm	93	70
2020	37.6 °C28 August 2020	-12.2 °C14 February 2020	14.6 °C	789 mm	86	86
2019	37.2 °C20 July 2019	-13.9 °C4 March 2019	13.9 °C	1,095 mm	82	93
2018	37.1 °C12 July 2018	-19.0 °C1 January 2018	14.4 °C	854 mm	109	98
2017	40.4 °C22 July 2017	-16.1 °C7 January 2017	15.3 °C	907 mm	78	63
2016	39.0 °C22 July 2016	-20.1 °C18 December 2016	15.7 °C	864 mm	93	76
2015	37.7 °C24 July 2015	-16.7 °C5 January 2015	15.1 °C	899 mm	85	81
2014	38.5 °C4 May 2014	-23.8 °C6 January 2014	13.7 °C	612 mm	91	95
2013	39.5 °C9 July 2013	-16.2 °C23 February 2013	13.5 °C	1,059 mm	77	103
2012	42.5 °C30 July 2012	-12.9 °C26 December 2012	16.4 °C	695 mm	104	69
2011	42.7 °C27 July 2011	-28.6 °C10 February 2011	15.0 °C	590 mm	111	91
2010	40.8 °C13 August 2010	-17.6 °C9 January 2010	14.4 °C	827 mm	95	89
2009	38.0 °C14 July 2009	-13.9 °C28 January 2009	13.7 °C	876 mm	65	88
2008	38.8 °C4 August 2008	-19.3 °C1 February 2008	13.5 °C	999 mm	62	101
2007	37.9 °C14 August 2007	-21.1 °C16 January 2007	14.5 °C	938 mm	72	91
2006	41.7 °C19 July 2006	-15.9 °C1 December 2006	15.8 °C	673 mm	99	69
2005	37.6 °C23 July 2005	-17.9 °C8 December 2005	14.5 °C	831 mm	91	77
2004	36.9 °C3 August 2004	-16.7 °C30 January 2004	14.2 °C	968 mm	55	76
2003	39.7 °C14 July 2003	-18.2 °C25 February 2003	13.6 °C	840 mm	63	93
2002	38.9 °C26 July 2002	-19.2 °C4 March 2002	14.1 °C	752 mm	91	84
2001	38.9 °C22 July 2001	-14.1 °C20 January 2001	14.9 °C	716 mm	81	81
2000	39.7 °C3 September 2000	-15.0 °C30 January 2000	14.1 °C	922 mm	87	100
1999	38.4 °C30 July 1999	-15.3 °C6 December 1999	14.4 °C	1,071 mm	62	64
1998	38.9 °C20 June 1998	-16.7 °C22 December 1998	15.2 °C	929 mm	110	71
1997	35.5 °C25 July 1997	-18.3 °C11 January 1997	13.3 °C	994 mm	65	93
1996	38.9 °C6 July 1996	-19.7 °C4 February 1996	13.3 °C	844 mm	70	102
1995	37.1 °C12 July 1995	-14.2 °C9 December 1995	13.6 °C	1,027 mm	70	86
1994	38.4 °C25 June 1994	-15.9 °C9 February 1994	14.1 °C	714 mm	78	84
1993	38.4 °C31 July 1993	-19.8 °C18 February 1993	12.8 °C	1,207 mm	68	97
1992	35.2 °C7 July 1992	-10.6 °C15 January 1992	13.9 °C	1,082 mm	48	71
1991	39.6 °C19 July 1991	-12.8 °C30 January 1991	15.0 °C	719 mm	94	72
1990	41.1 °C31 August 1990	-20.7 °C24 December 1990	14.8 °C	928 mm	90	70
1989	37.9 °C30 July 1989	-24.3 °C22 December 1989	13.3 °C	865 mm	73	96
1988	39.2 °C22 August 1988	-20.5 °C8 January 1988	13.9 °C	773 mm	87	90
1987	38.4 °C2 August 1987	-16.9 °C16 December 1987	14.2 °C	1,202 mm	72	77
1986	41.1 °C30 July 1986	-14.4 °C11 February 1986	14.6 °C	1,086 mm	81	77
1985	38.1 °C12 July 1985	-21.0 °C20 January 1985	13.2 °C	1,064 mm	75	98
1984	40.7 °C10 September 1984	-21.0 °C19 January 1984	13.7 °C	1,046 mm	86	82
1983	39.7 °C16 August 1983	-24.1 °C30 December 1983	13.1 °C	1,133 mm	79	92
1982	38.7 °C14 August 1982	-25.2 °C6 February 1982	13.5 °C	960 mm	77	84
1981	37.3 °C15 July 1981	-26.2 °C11 February 1981	14.5 °C	1,004 mm	76	75
1980	42.4 °C12 July 1980	-16.5 °C12 February 1980	14.7 °C	797 mm	112	89
1979	36.3 °C29 July 1979	-23.4 °C5 February 1979	12.6 °C	922 mm	77	108
1978	39.0 °C29 July 1978	-21.9 °C17 January 1978	13.0 °C	797 mm	89	107
1977	39.6 °C24 July 1977	-18.2 °C9 January 1977	14.4 °C	943 mm	74	84
1976	37.8 °C30 July 1976	-18.4 °C8 January 1976	13.5 °C	684 mm	70	100
1975	36.8 °C11 August 1975	-16.8 °C19 February 1975	13.3 °C	775 mm	74	103
1974	40.0 °C21 July 1974	-24.3 °C12 January 1974	13.4 °C	939 mm	65	89
1973	37.6 °C25 August 1973	-20.1 °C11 January 1973	13.4 °C	1,355 mm	72	78
1972	37.9 °C26 July 1972	-19.4 °C13 December 1972	13.1 °C	678 mm	75	97
1971	37.5 °C17 July 1971	-22.2 °C8 February 1971	13.6 °C	721 mm	78	94
1970	40.0 °C31 July 1970	-15.7 °C8 January 1970	13.5 °C	753 mm	93	103
1969	39.0 °C12 July 1969	-15.9 °C9 March 1969	13.1 °C	762 mm	75	101
1968	38.5 °C9 August 1968	-19.9 °C7 January 1968	13.2 °C	738 mm	66	94
1967	35.7 °C10 July 1967	-16.3 °C8 March 1967	13.4 °C	772 mm	50	83
1966	39.0 °C11 July 1966	-19.5 °C24 December 1966	13.6 °C	437 mm	83	98
1965	37.7 °C23 July 1965	-17.6 °C24 February 1965	14.4 °C	599 mm	78	89
1964	40.0 °C3 August 1964	-17.7 °C5 December 1964	14.1 °C	682 mm	83	102
1963	38.5 °C27 August 1963	-20.6 °C12 January 1963	14.5 °C	585 mm	105	97
1962	38.0 °C19 August 1962	-23.8 °C20 January 1962	13.6 °C	724 mm	77	94
1961	36.8 °C5 July 1961	-21.5 °C13 December 1961	12.6 °C	1,056 mm	58	95
1960	37.0 °C2 July 1960	-16.8 °C5 March 1960	12.6 °C	928 mm	62	109
1959	36.6 °C3 August 1959	-27.1 °C4 January 1959	13.2 °C	1,076 mm	79	94
1958	37.9 °C28 August 1958	-12.9 °C12 February 1958	13.2 °C	895 mm	68	93
1957	38.5 °C13 August 1957	-15.9 °C10 January 1957	13.3 °C	1,156 mm	68	90
1956	40.3 °C16 August 1956	-14.4 °C2 February 1956	14.8 °C	422 mm	119	96
1955	38.9 °C30 July 1955	-13.8 °C23 January 1955	14.2 °C	724 mm	93	105
1954	42.5 °C13 July 1954	-16.3 °C21 January 1954	15.7 °C	402 mm	118	80
1953	41.4 °C15 June 1953	-14.4 °C16 January 1953	15.0 °C	629 mm	101	71
1952	40.5 °C16 August 1952	-17.8 °C5 January 1952	14.2 °C	513 mm	105	92
1951	38.5 °C7 August 1951	-23.4 °C1 February 1951	12.4 °C	1,244 mm	64	108
1950	36.5 °C25 June 1950	-18.3 °C4 January 1950	12.7 °C	872 mm	38	107
1949	36.2 °C19 July 1949	-25.0 °C30 January 1949	13.3 °C	1,122 mm	56	92
1948	37.5 °C14 June 1948	-23.8 °C12 March 1948	13.2 °C	763 mm	77	106
1947	39.6 °C3 September 1947	-31.7 °C4 January 1947	12.9 °C	864 mm	71	109
1946	40.2 °C17 August 1946	-18.3 °C30 December 1946	14.7 °C	879 mm	65	65
1945	35.6 °C18 August 1945	-20.7 °C19 December 1945	13.0 °C	1,057 mm	54	86
1944	36.8 °C4 August 1944	-15.3 °C9 January 1944	13.7 °C	1,195 mm	60	87
1943	39.6 °C2 August 1943	-18.1 °C15 December 1943	13.9 °C	812 mm	79	93
1942	36.6 °C6 August 1942	-17.0 °C4 January 1942	13.0 °C	861 mm	52	94
1941	36.2 °C29 July 1941	-11.8 °C18 January 1941	13.2 °C	784 mm	53	96
1940	35.8 °C30 July 1940	-23.4 °C19 January 1940	11.8 °C	794 mm	52	114

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

20.5 °C

+0.8 °C

Hot days (≥ 30 °C)

76 d/yr

-3

Frost days (< 0 °C)

81 d/yr

-8

Annual rainfall

1193 mm

+326 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	2.8 °C	-2.7 °C	44 mm	+15 mm
Feb	6.6 °C	-1.8 °C	13 mm	-26 mm
Mar	19.8 °C	+5.9 °C	24 mm	-49 mm
Apr	21.2 °C	+1.3 °C	160 mm	+64 mm
May	23.7 °C	-0.7 °C	297 mm	+159 mm
Jun	29.8 °C	0.0 °C	215 mm	+99 mm
Jul	31.9 °C	-0.7 °C	100 mm	+29 mm
Aug	30.4 °C	-1.7 °C	114 mm	+46 mm
Sep	27.6 °C	-0.2 °C	108 mm	+26 mm
Oct	23.5 °C	+2.0 °C	75 mm	0 mm
Nov	16.5 °C	+3.0 °C	41 mm	-5 mm
Dec	11.2 °C	+3.7 °C	3 mm	-31 mm

The year's extremes

Hottest day

37.2 °C

8 Aug 2025

Coldest day

-23.2 °C

20 Feb 2025

Wettest day

86.6 mm

24 May 2025

Windiest day

56.3 km/h

19 Mar 2025

Strongest gust

96.5 km/h

14 Mar 2025

Hottest feels-like

40.4 °C

29 Jul 2025

Coldest feels-like

-28.6 °C

20 Feb 2025

Snowiest day

10.2 cm

5 Jan 2025

Sunniest day

14.6 h

19 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 Derby?

Derby has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.9 °C and it receives 867 mm of precipitation per year.

What is the hottest day ever recorded in Derby?

The hottest day measured in Derby between 1940 and 2025 was 27 July 2011, reaching 42.7 °C.

What is the coldest day in Derby?

The coldest day measured in Derby between 1940 and 2025 was 4 January 1947, at -31.7 °C.

Does it snow in Derby?

Yes. Derby gets on average 31.0 cm of snow per year and has around 89 frost days.

Has the climate of Derby warmed?

Yes: Derby warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Derby?

The wettest day measured in Derby between 1940 and 2025 was 15 October 1980, with 108 mm of rain in 24 hours.

What was the windiest day in Derby?

The windiest day measured in Derby between 1940 and 2025 was 21 February 1976, with winds reaching 58.5 km/h.

What is the warmest month in Derby?

The warmest month in Derby is July (27.0 °C on average); the coldest is January (-0.3 °C).

How much does it rain in Derby?

Derby receives on average 867 mm of precipitation per year, spread over about 91 rainy days.

Is it sunny in Derby?

Derby gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

What is the biggest single-day snowfall in Derby?

The heaviest 24-hour snowfall measured in Derby between 1940 and 2025 was 1 February 1983, with 24.9 cm.

Are there tropical nights in Derby?

Yes: Derby has on average 66 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Derby?

In Derby, between 1940 and 2025, the highest apparent temperature reached 46.9 °C on 26 June 1980, and the lowest was -37.2 °C on 4 January 1947.

Compare Derby with another city

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