Chillicothe climate — normals and trends

Q: What is the climate of Chillicothe?

Chillicothe has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,036 mm of precipitation per year.

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

The hottest day measured in Chillicothe between 1940 and 2025 was 14 July 1954, reaching 40.0 °C.

Q: What is the coldest day in Chillicothe?

The coldest day measured in Chillicothe between 1940 and 2025 was 19 January 1994, at -29.2 °C.

Q: Does it snow in Chillicothe?

Yes. Chillicothe gets on average 47.1 cm of snow per year and has around 92 frost days.

Q: Has the climate of Chillicothe warmed?

Yes: Chillicothe warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Chillicothe?

The wettest day measured in Chillicothe between 1940 and 2025 was 17 September 2004, with 84 mm of rain in 24 hours.

Q: What was the windiest day in Chillicothe?

The windiest day measured in Chillicothe between 1940 and 2025 was 25 March 1947, with winds reaching 41.9 km/h.

Q: What is the warmest month in Chillicothe?

The warmest month in Chillicothe is July (23.9 °C on average); the coldest is January (-0.8 °C).

Q: How much does it rain in Chillicothe?

Chillicothe receives on average 1,036 mm of precipitation per year, spread over about 128 rainy days.

Q: Is it sunny in Chillicothe?

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

Chillicothe (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 1,036 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 (23.9 °C on average) and the coldest is January (-0.8 °C). Rainfall peaks in May.

Chillicothe averages 92 frost days, 39 hot days (≥ 30 °C) and 128 rainy days per year.

Chillicothe has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The number of frost days there went from about 103 to 81 per year over the period.

The hottest day of the period reached 40.0 °C (on 14 July 1954) and the coldest -29.2 °C (on 19 January 1994).

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

ChillicotheOhio

coords: 39.33°, -82.98°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthOctober

Mean daily temperature

12.1°C

Average daily high

17.2°C

Average daily low

7.4°C

Annual rainfall

1,036mm

Sunshine / day

8.7h

Mean relative humidity

70%

Average peak wind

15.2km/h

Seasonal range

24.7°C

Frost days (< 0 °C)

92 d/yr

Hot days (≥ 30 °C)

39 d/yr

Rainy days (≥ 1 mm)

128 d/yr

Annual snowfall

47.1 cm

Average feels-like high

16.1 °C

Average feels-like low

5.3 °C

Average peak gust

35.9 km/h

Tropical nights (≥ 20 °C)

36 d/yr

Solar radiation

14.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °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

40.0 °C

14 July 1954

Coldest day

-29.2 °C

19 January 1994

Wettest day

84 mm

17 September 2004

Windiest day

41.9 km/h

25 March 1947

Strongest gust

111.6 km/h

25 February 1956

Hottest feels-like

43.6 °C

14 July 1954

Coldest feels-like

-35.1 °C

17 January 1977

Snowiest day

23.6 cm

4 April 1987

Sunniest day

14.8 h

21 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.1 °C24 June 2025	-22.2 °C22 January 2025	12.6 °C	1,225 mm	42	91
2024	36.5 °C30 August 2024	-13.3 °C21 January 2024	14.0 °C	1,042 mm	68	63
2023	35.4 °C5 September 2023	-10.8 °C4 February 2023	13.7 °C	1,012 mm	35	58
2022	36.5 °C22 June 2022	-21.4 °C23 December 2022	12.9 °C	1,079 mm	44	86
2021	34.3 °C12 August 2021	-14.1 °C20 February 2021	13.4 °C	1,124 mm	44	86
2020	34.9 °C5 July 2020	-10.7 °C15 February 2020	13.2 °C	1,285 mm	41	64
2019	35.8 °C13 September 2019	-19.1 °C21 January 2019	13.2 °C	1,383 mm	54	87
2018	34.1 °C14 July 2018	-22.8 °C2 January 2018	12.9 °C	1,491 mm	49	89
2017	33.3 °C12 June 2017	-14.2 °C27 December 2017	13.6 °C	1,140 mm	38	73
2016	33.3 °C27 August 2016	-16.3 °C14 February 2016	13.4 °C	1,048 mm	50	81
2015	33.1 °C11 June 2015	-26.1 °C20 February 2015	12.7 °C	1,078 mm	44	82
2014	33.4 °C18 June 2014	-24.2 °C29 January 2014	11.4 °C	989 mm	20	101
2013	33.9 °C10 September 2013	-14.1 °C22 January 2013	12.2 °C	1,024 mm	35	98
2012	38.4 °C7 July 2012	-10.5 °C15 January 2012	13.8 °C	889 mm	64	76
2011	36.8 °C3 September 2011	-23.6 °C22 January 2011	12.9 °C	1,426 mm	51	81
2010	35.1 °C13 August 2010	-18.4 °C8 February 2010	12.7 °C	846 mm	66	91
2009	33.4 °C20 August 2009	-25.1 °C16 January 2009	12.1 °C	988 mm	24	85
2008	34.9 °C3 September 2008	-18.8 °C21 February 2008	12.1 °C	1,096 mm	42	100
2007	36.2 °C9 August 2007	-19.3 °C19 February 2007	13.3 °C	846 mm	79	87
2006	35.8 °C2 August 2006	-14.4 °C19 February 2006	13.0 °C	1,043 mm	48	72
2005	36.3 °C13 August 2005	-18.7 °C24 January 2005	12.6 °C	880 mm	57	89
2004	32.2 °C6 July 2004	-21.1 °C31 January 2004	12.2 °C	1,242 mm	16	90
2003	32.9 °C5 July 2003	-23.7 °C27 January 2003	11.6 °C	1,270 mm	14	101
2002	35.5 °C5 August 2002	-13.3 °C4 March 2002	12.9 °C	1,131 mm	64	90
2001	32.6 °C24 July 2001	-16.0 °C21 January 2001	12.6 °C	971 mm	22	80
2000	32.5 °C11 June 2000	-23.6 °C28 January 2000	11.9 °C	1,011 mm	18	98
1999	36.5 °C10 June 1999	-21.0 °C5 January 1999	12.9 °C	863 mm	49	90
1998	34.7 °C6 September 1998	-13.6 °C1 January 1998	13.5 °C	1,059 mm	34	64
1997	34.6 °C27 July 1997	-17.4 °C17 January 1997	11.5 °C	1,025 mm	19	87
1996	33.1 °C30 June 1996	-18.2 °C5 February 1996	11.2 °C	1,406 mm	25	104
1995	35.5 °C15 July 1995	-23.9 °C12 February 1995	11.8 °C	1,124 mm	41	106
1994	36.5 °C17 June 1994	-29.2 °C19 January 1994	12.3 °C	1,061 mm	44	86
1993	36.8 °C28 July 1993	-18.7 °C19 February 1993	12.0 °C	1,059 mm	45	88
1992	34.7 °C10 July 1992	-18.3 °C16 January 1992	11.9 °C	801 mm	22	82
1991	36.7 °C2 August 1991	-14.7 °C16 February 1991	13.3 °C	858 mm	54	84
1990	34.6 °C9 July 1990	-11.8 °C26 February 1990	13.1 °C	1,411 mm	28	70
1989	34.6 °C11 July 1989	-27.3 °C22 December 1989	11.3 °C	1,193 mm	26	98
1988	39.0 °C8 July 1988	-17.6 °C6 January 1988	12.1 °C	873 mm	60	103
1987	36.8 °C24 July 1987	-14.2 °C24 January 1987	13.0 °C	800 mm	65	88
1986	34.8 °C25 July 1986	-19.4 °C28 February 1986	12.7 °C	937 mm	43	82
1985	35.0 °C8 September 1985	-27.0 °C20 January 1985	12.0 °C	1,144 mm	25	94
1984	34.5 °C2 September 1984	-27.4 °C21 January 1984	12.1 °C	1,150 mm	45	81
1983	38.0 °C20 August 1983	-23.0 °C25 December 1983	12.3 °C	1,105 mm	69	82
1982	34.3 °C26 July 1982	-26.0 °C17 January 1982	12.2 °C	954 mm	27	93
1981	33.2 °C18 July 1981	-23.2 °C12 February 1981	11.7 °C	931 mm	31	100
1980	37.1 °C16 July 1980	-23.0 °C3 March 1980	11.5 °C	969 mm	43	101
1979	31.9 °C31 July 1979	-24.5 °C6 February 1979	11.0 °C	1,342 mm	9	100
1978	36.1 °C27 June 1978	-20.1 °C11 February 1978	10.8 °C	1,177 mm	32	94
1977	36.1 °C20 July 1977	-29.0 °C17 January 1977	12.0 °C	1,115 mm	51	95
1976	33.9 °C12 June 1976	-20.6 °C9 January 1976	11.2 °C	789 mm	24	112
1975	34.5 °C1 August 1975	-17.8 °C10 February 1975	12.3 °C	1,112 mm	42	91
1974	33.2 °C14 July 1974	-14.7 °C5 December 1974	12.1 °C	1,052 mm	23	81
1973	34.8 °C2 September 1973	-15.7 °C17 February 1973	12.8 °C	1,251 mm	29	83
1972	34.2 °C23 July 1972	-23.6 °C16 January 1972	11.4 °C	1,047 mm	21	91
1971	35.9 °C28 June 1971	-18.4 °C2 February 1971	12.2 °C	828 mm	33	89
1970	35.3 °C1 July 1970	-26.6 °C22 January 1970	12.0 °C	972 mm	46	93
1969	35.3 °C5 July 1969	-15.6 °C5 January 1969	11.5 °C	854 mm	38	112
1968	34.3 °C24 August 1968	-23.5 °C8 January 1968	11.4 °C	982 mm	34	100
1967	34.6 °C15 June 1967	-17.7 °C25 February 1967	11.5 °C	971 mm	25	96
1966	35.1 °C1 July 1966	-19.8 °C30 January 1966	11.1 °C	965 mm	42	96
1965	34.7 °C24 July 1965	-19.7 °C17 January 1965	11.9 °C	883 mm	34	101
1964	35.8 °C10 September 1964	-16.8 °C14 January 1964	12.3 °C	915 mm	56	100
1963	34.0 °C3 August 1963	-27.1 °C28 January 1963	11.0 °C	724 mm	29	101
1962	37.4 °C20 August 1962	-20.5 °C10 January 1962	11.5 °C	945 mm	42	105
1961	33.1 °C10 September 1961	-26.3 °C25 January 1961	11.5 °C	1,057 mm	33	92
1960	35.0 °C8 September 1960	-21.4 °C22 December 1960	11.3 °C	902 mm	41	112
1959	35.6 °C29 June 1959	-20.8 °C5 January 1959	12.6 °C	940 mm	72	96
1958	33.0 °C4 July 1958	-22.3 °C11 December 1958	10.6 °C	987 mm	18	104
1957	35.2 °C2 September 1957	-23.0 °C17 January 1957	12.3 °C	1,059 mm	43	89
1956	34.5 °C5 August 1956	-14.8 °C21 March 1956	12.1 °C	1,140 mm	27	88
1955	35.2 °C3 August 1955	-19.1 °C13 February 1955	12.3 °C	924 mm	52	99
1954	40.0 °C14 July 1954	-13.5 °C13 January 1954	12.7 °C	782 mm	57	86
1953	37.2 °C2 September 1953	-18.3 °C18 December 1953	13.0 °C	797 mm	69	84
1952	36.3 °C23 July 1952	-14.3 °C30 January 1952	12.5 °C	875 mm	61	89
1951	35.9 °C31 August 1951	-25.4 °C3 February 1951	11.7 °C	1,176 mm	44	98
1950	32.3 °C17 August 1950	-16.7 °C18 December 1950	11.2 °C	1,375 mm	8	110
1949	36.0 °C4 July 1949	-14.9 °C30 January 1949	12.9 °C	988 mm	46	78
1948	36.4 °C27 August 1948	-23.4 °C28 January 1948	11.9 °C	1,231 mm	34	88
1947	31.9 °C5 August 1947	-16.8 °C5 February 1947	11.0 °C	860 mm	22	112
1946	32.9 °C19 July 1946	-18.8 °C27 January 1946	12.2 °C	1,034 mm	10	86
1945	33.2 °C31 August 1945	-20.5 °C3 February 1945	11.4 °C	1,103 mm	27	93
1944	34.8 °C11 July 1944	-17.3 °C22 December 1944	11.7 °C	914 mm	39	105
1943	33.4 °C1 September 1943	-21.7 °C8 March 1943	10.7 °C	808 mm	22	115
1942	34.2 °C2 August 1942	-23.7 °C8 January 1942	11.1 °C	1,095 mm	12	104
1941	33.6 °C11 August 1941	-14.7 °C18 March 1941	11.3 °C	857 mm	20	112
1940	35.3 °C29 July 1940	-24.5 °C27 January 1940	10.1 °C	1,015 mm	30	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

17.8 °C

+0.6 °C

Hot days (≥ 30 °C)

42 d/yr

Frost days (< 0 °C)

91 d/yr

-1

Annual rainfall

1225 mm

+189 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	0.2 °C	-3.3 °C	57 mm	-24 mm
Feb	6.8 °C	+1.3 °C	120 mm	+40 mm
Mar	15.9 °C	+4.8 °C	99 mm	-5 mm
Apr	19.3 °C	+1.8 °C	137 mm	+36 mm
May	21.0 °C	-1.6 °C	188 mm	+81 mm
Jun	28.5 °C	+1.3 °C	156 mm	+63 mm
Jul	29.8 °C	+0.6 °C	145 mm	+54 mm
Aug	27.7 °C	-1.0 °C	26 mm	-49 mm
Sep	27.4 °C	+2.1 °C	75 mm	+5 mm
Oct	19.4 °C	+0.5 °C	90 mm	+23 mm
Nov	11.3 °C	-0.3 °C	64 mm	-20 mm
Dec	5.8 °C	+0.1 °C	67 mm	-16 mm

The year's extremes

Hottest day

34.1 °C

24 Jun 2025

Coldest day

-22.2 °C

22 Jan 2025

Wettest day

43.5 mm

3 May 2025

Windiest day

35.9 km/h

15 Apr 2025

Strongest gust

84.2 km/h

15 Apr 2025

Hottest feels-like

39.4 °C

24 Jun 2025

Coldest feels-like

-27.4 °C

22 Jan 2025

Snowiest day

11.7 cm

6 Jan 2025

Sunniest day

14.8 h

20 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 Chillicothe?

Chillicothe has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,036 mm of precipitation per year.

What is the hottest day ever recorded in Chillicothe?

The hottest day measured in Chillicothe between 1940 and 2025 was 14 July 1954, reaching 40.0 °C.

What is the coldest day in Chillicothe?

The coldest day measured in Chillicothe between 1940 and 2025 was 19 January 1994, at -29.2 °C.

Does it snow in Chillicothe?

Yes. Chillicothe gets on average 47.1 cm of snow per year and has around 92 frost days.

Has the climate of Chillicothe warmed?

Yes: Chillicothe warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Chillicothe?

The wettest day measured in Chillicothe between 1940 and 2025 was 17 September 2004, with 84 mm of rain in 24 hours.

What was the windiest day in Chillicothe?

The windiest day measured in Chillicothe between 1940 and 2025 was 25 March 1947, with winds reaching 41.9 km/h.

What is the warmest month in Chillicothe?

The warmest month in Chillicothe is July (23.9 °C on average); the coldest is January (-0.8 °C).

How much does it rain in Chillicothe?

Chillicothe receives on average 1,036 mm of precipitation per year, spread over about 128 rainy days.

Is it sunny in Chillicothe?

Chillicothe 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 Chillicothe?

The heaviest 24-hour snowfall measured in Chillicothe between 1940 and 2025 was 4 April 1987, with 23.6 cm.

Are there tropical nights in Chillicothe?

Yes: Chillicothe has on average 36 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Chillicothe?

In Chillicothe, between 1940 and 2025, the highest apparent temperature reached 43.6 °C on 14 July 1954, and the lowest was -35.1 °C on 17 January 1977.

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