Oak Ridge climate — normals and trends

Q: What is the climate of Oak Ridge?

Oak Ridge has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,275 mm of precipitation per year.

Q: What is the hottest day ever recorded in Oak Ridge?

The hottest day measured in Oak Ridge between 1940 and 2025 was 1 July 2012, reaching 40.1 °C.

Q: What is the coldest day in Oak Ridge?

The coldest day measured in Oak Ridge between 1940 and 2025 was 21 January 1985, at -28.9 °C.

Q: Does it snow in Oak Ridge?

Yes. Oak Ridge gets on average 21.8 cm of snow per year and has around 59 frost days.

Q: Has the climate of Oak Ridge warmed?

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

Q: What is the wettest day in Oak Ridge?

The wettest day measured in Oak Ridge between 1940 and 2025 was 27 March 1994, with 122 mm of rain in 24 hours.

Q: What was the windiest day in Oak Ridge?

The windiest day measured in Oak Ridge between 1940 and 2025 was 13 March 1993, with winds reaching 37.7 km/h.

Q: What is the warmest month in Oak Ridge?

The warmest month in Oak Ridge is July (24.7 °C on average); the coldest is January (3.1 °C).

Q: How much does it rain in Oak Ridge?

Oak Ridge receives on average 1,275 mm of precipitation per year, spread over about 138 rainy days.

Q: Is it sunny in Oak Ridge?

Oak Ridge gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Oak Ridge (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.4 °C and it receives 1,275 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 (24.7 °C on average) and the coldest is January (3.1 °C). Rainfall peaks in March.

Oak Ridge averages 59 frost days, 42 hot days (≥ 30 °C) and 138 rainy days per year.

Oak Ridge 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 68 to 50 per year over the period.

The hottest day of the period reached 40.1 °C (on 1 July 2012) and the coldest -28.9 °C (on 21 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

Oak RidgeTennessee

coords: 36.01°, -84.27°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthMarchDriest monthOctober

Mean daily temperature

14.4°C

Average daily high

19.6°C

Average daily low

9.9°C

Annual rainfall

1,275mm

Sunshine / day

8.9h

Mean relative humidity

72%

Average peak wind

12.8km/h

Seasonal range

21.6°C

Frost days (< 0 °C)

59 d/yr

Hot days (≥ 30 °C)

42 d/yr

Rainy days (≥ 1 mm)

138 d/yr

Annual snowfall

21.8 cm

Average feels-like high

19.4 °C

Average feels-like low

8.6 °C

Average peak gust

33.3 km/h

Tropical nights (≥ 20 °C)

58 d/yr

Solar radiation

15.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.35 · 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

40.1 °C

1 July 2012

Coldest day

-28.9 °C

21 January 1985

Wettest day

122 mm

27 March 1994

Windiest day

37.7 km/h

13 March 1993

Strongest gust

109.4 km/h

3 March 2023

Hottest feels-like

42.7 °C

21 August 1983

Coldest feels-like

-34.5 °C

21 January 1985

Snowiest day

35.0 cm

13 March 1993

Sunniest day

14.2 h

10 June 2023

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.2 °C25 June 2025	-12.7 °C22 January 2025	15.7 °C	1,222 mm	55	57
2024	35.1 °C15 July 2024	-21.1 °C17 January 2024	15.8 °C	1,298 mm	55	44
2023	35.6 °C25 August 2023	-5.8 °C29 November 2023	16.1 °C	1,249 mm	42	29
2022	36.5 °C22 June 2022	-15.6 °C24 December 2022	15.5 °C	1,396 mm	60	55
2021	35.3 °C28 July 2021	-7.7 °C17 February 2021	15.7 °C	1,225 mm	51	45
2020	35.6 °C16 July 2020	-9.2 °C26 December 2020	15.7 °C	1,608 mm	54	32
2019	36.0 °C13 September 2019	-10.8 °C21 January 2019	16.2 °C	1,585 mm	88	35
2018	34.0 °C4 July 2018	-14.0 °C2 January 2018	15.5 °C	1,714 mm	74	43
2017	32.9 °C21 July 2017	-12.3 °C8 January 2017	15.9 °C	1,418 mm	29	40
2016	34.9 °C23 June 2016	-11.0 °C19 January 2016	16.4 °C	1,041 mm	97	54
2015	34.7 °C16 June 2015	-16.3 °C19 February 2015	15.6 °C	1,528 mm	51	55
2014	31.9 °C17 June 2014	-18.6 °C29 January 2014	14.2 °C	1,268 mm	27	67
2013	32.6 °C17 July 2013	-6.6 °C28 November 2013	14.4 °C	1,496 mm	20	62
2012	40.1 °C1 July 2012	-7.8 °C12 February 2012	15.9 °C	1,201 mm	40	34
2011	36.0 °C3 September 2011	-12.2 °C9 January 2011	15.2 °C	1,503 mm	69	45
2010	36.1 °C7 July 2010	-11.7 °C31 January 2010	14.7 °C	1,094 mm	84	77
2009	32.8 °C19 June 2009	-15.2 °C16 January 2009	14.5 °C	1,445 mm	22	56
2008	34.5 °C22 August 2008	-12.2 °C20 January 2008	14.7 °C	1,089 mm	62	56
2007	38.0 °C16 August 2007	-11.6 °C29 January 2007	15.9 °C	800 mm	84	55
2006	34.1 °C19 July 2006	-8.9 °C8 December 2006	15.0 °C	1,164 mm	43	44
2005	33.6 °C14 June 2005	-10.9 °C18 January 2005	15.2 °C	1,046 mm	65	55
2004	31.9 °C23 July 2004	-11.5 °C20 December 2004	14.8 °C	1,473 mm	18	56
2003	31.6 °C26 August 2003	-21.4 °C24 January 2003	14.2 °C	1,429 mm	11	63
2002	34.2 °C10 September 2002	-9.5 °C28 February 2002	15.1 °C	1,351 mm	57	61
2001	32.4 °C23 August 2001	-9.5 °C3 January 2001	14.7 °C	1,128 mm	20	53
2000	32.6 °C16 August 2000	-13.6 °C27 January 2000	14.2 °C	1,070 mm	21	65
1999	34.7 °C30 July 1999	-12.6 °C25 December 1999	15.1 °C	1,090 mm	47	48
1998	35.0 °C13 September 1998	-9.1 °C12 March 1998	15.6 °C	1,278 mm	58	32
1997	34.7 °C28 July 1997	-15.3 °C11 January 1997	13.9 °C	1,356 mm	30	52
1996	33.4 °C23 June 1996	-21.1 °C5 February 1996	13.6 °C	1,557 mm	28	78
1995	35.4 °C15 August 1995	-14.3 °C10 December 1995	14.4 °C	1,318 mm	49	64
1994	32.8 °C20 June 1994	-23.7 °C19 January 1994	14.4 °C	1,700 mm	16	53
1993	35.5 °C28 July 1993	-11.1 °C19 February 1993	14.4 °C	1,195 mm	61	61
1992	32.1 °C9 July 1992	-13.7 °C16 January 1992	13.7 °C	1,226 mm	10	54
1991	33.5 °C3 August 1991	-13.8 °C16 February 1991	15.1 °C	1,432 mm	43	54
1990	35.7 °C8 July 1990	-9.3 °C25 December 1990	15.5 °C	1,470 mm	58	33
1989	33.3 °C25 July 1989	-20.6 °C24 December 1989	13.7 °C	1,561 mm	26	57
1988	36.5 °C8 July 1988	-16.1 °C11 January 1988	13.8 °C	1,064 mm	60	77
1987	34.7 °C24 July 1987	-12.1 °C27 January 1987	14.7 °C	1,011 mm	61	54
1986	35.2 °C20 July 1986	-18.6 °C28 January 1986	14.8 °C	1,107 mm	50	64
1985	32.8 °C12 August 1985	-28.9 °C21 January 1985	14.0 °C	1,171 mm	30	74
1984	32.2 °C19 June 1984	-19.6 °C21 January 1984	14.0 °C	1,288 mm	25	66
1983	36.8 °C21 August 1983	-20.4 °C25 December 1983	13.8 °C	1,152 mm	51	60
1982	32.4 °C30 May 1982	-24.2 °C17 January 1982	14.4 °C	1,391 mm	20	57
1981	34.7 °C25 June 1981	-16.6 °C12 February 1981	13.6 °C	1,080 mm	29	74
1980	37.5 °C16 July 1980	-19.1 °C3 March 1980	14.0 °C	1,102 mm	69	67
1979	33.7 °C8 August 1979	-17.8 °C10 February 1979	13.7 °C	1,376 mm	26	73
1978	34.9 °C28 June 1978	-14.7 °C10 January 1978	13.7 °C	1,104 mm	36	75
1977	35.1 °C8 July 1977	-20.0 °C17 January 1977	14.3 °C	1,363 mm	48	68
1976	33.0 °C24 July 1976	-14.3 °C9 January 1976	13.1 °C	1,198 mm	13	76
1975	33.7 °C4 September 1975	-12.2 °C19 December 1975	14.5 °C	1,396 mm	44	50
1974	32.1 °C29 July 1974	-9.0 °C26 February 1974	14.5 °C	1,418 mm	19	43
1973	33.8 °C29 August 1973	-14.1 °C13 January 1973	14.4 °C	1,457 mm	22	56
1972	31.6 °C23 July 1972	-18.0 °C16 January 1972	13.9 °C	1,526 mm	13	52
1971	31.9 °C27 June 1971	-16.8 °C14 February 1971	14.3 °C	1,315 mm	15	56
1970	36.0 °C2 July 1970	-20.3 °C10 January 1970	14.5 °C	949 mm	62	69
1969	34.5 °C29 June 1969	-14.5 °C5 January 1969	13.6 °C	1,064 mm	46	78
1968	35.6 °C23 August 1968	-13.4 °C8 January 1968	13.5 °C	968 mm	43	82
1967	31.3 °C27 May 1967	-16.8 °C25 February 1967	13.6 °C	1,229 mm	12	67
1966	34.8 °C14 July 1966	-22.5 °C30 January 1966	13.4 °C	1,173 mm	24	65
1965	33.8 °C17 August 1965	-16.0 °C2 February 1965	14.4 °C	1,044 mm	31	63
1964	34.6 °C22 June 1964	-11.1 °C15 January 1964	14.2 °C	1,448 mm	44	59
1963	32.8 °C10 June 1963	-25.8 °C24 January 1963	13.4 °C	1,133 mm	23	78
1962	34.5 °C19 August 1962	-19.6 °C11 January 1962	14.3 °C	1,241 mm	67	59
1961	32.0 °C24 September 1961	-20.1 °C28 January 1961	13.8 °C	1,559 mm	23	55
1960	33.0 °C20 June 1960	-16.1 °C6 March 1960	13.4 °C	1,272 mm	39	85
1959	33.5 °C1 July 1959	-15.4 °C5 January 1959	14.6 °C	1,281 mm	42	59
1958	34.0 °C13 June 1958	-19.8 °C18 February 1958	13.4 °C	1,140 mm	35	71
1957	35.1 °C3 August 1957	-14.3 °C12 December 1957	15.1 °C	1,477 mm	53	44
1956	35.5 °C27 July 1956	-7.9 °C9 January 1956	14.9 °C	1,297 mm	55	56
1955	34.6 °C21 September 1955	-13.5 °C12 February 1955	14.7 °C	1,147 mm	67	68
1954	37.1 °C5 September 1954	-11.4 °C13 January 1954	15.0 °C	1,116 mm	87	60
1953	36.4 °C1 September 1953	-12.5 °C18 December 1953	15.0 °C	1,150 mm	66	47
1952	39.9 °C28 July 1952	-10.8 °C30 January 1952	14.8 °C	1,105 mm	67	47
1951	34.6 °C2 June 1951	-17.7 °C2 February 1951	14.3 °C	1,463 mm	56	68
1950	33.1 °C26 June 1950	-16.6 °C25 November 1950	14.2 °C	1,273 mm	19	69
1949	34.4 °C28 July 1949	-6.5 °C30 January 1949	15.1 °C	1,390 mm	33	45
1948	35.5 °C4 July 1948	-15.3 °C24 January 1948	14.7 °C	1,402 mm	53	56
1947	35.9 °C5 August 1947	-11.6 °C26 February 1947	13.5 °C	1,215 mm	47	78
1946	33.2 °C24 July 1946	-7.3 °C27 January 1946	14.8 °C	1,196 mm	22	43
1945	34.1 °C29 June 1945	-17.0 °C16 December 1945	14.0 °C	1,435 mm	30	61
1944	35.2 °C23 June 1944	-5.9 °C13 February 1944	14.3 °C	1,254 mm	46	59
1943	35.3 °C26 August 1943	-9.9 °C15 February 1943	13.5 °C	1,143 mm	50	72
1942	33.7 °C20 July 1942	-14.6 °C8 January 1942	13.5 °C	1,093 mm	20	73
1941	32.3 °C31 July 1941	-8.9 °C18 March 1941	13.9 °C	1,162 mm	17	71
1940	33.1 °C29 July 1940	-23.8 °C27 January 1940	12.5 °C	1,275 mm	15	71

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

21.0 °C

+1.4 °C

Hot days (≥ 30 °C)

55 d/yr

+13

Frost days (< 0 °C)

57 d/yr

-2

Annual rainfall

1222 mm

-53 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	5.6 °C	-2.1 °C	81 mm	-38 mm
Feb	12.9 °C	+2.7 °C	148 mm	+26 mm
Mar	19.2 °C	+4.2 °C	68 mm	-64 mm
Apr	22.9 °C	+2.7 °C	108 mm	-5 mm
May	23.8 °C	-0.6 °C	165 mm	+63 mm
Jun	29.8 °C	+1.5 °C	120 mm	+25 mm
Jul	32.3 °C	+2.7 °C	102 mm	-21 mm
Aug	28.7 °C	-0.4 °C	102 mm	+7 mm
Sep	27.6 °C	+1.2 °C	87 mm	-1 mm
Oct	21.8 °C	+0.9 °C	94 mm	+20 mm
Nov	16.2 °C	+1.8 °C	81 mm	-17 mm
Dec	10.9 °C	+1.5 °C	67 mm	-50 mm

The year's extremes

Hottest day

35.2 °C

25 Jun 2025

Coldest day

-12.7 °C

22 Jan 2025

Wettest day

45.5 mm

6 Apr 2025

Windiest day

31.7 km/h

16 Mar 2025

Strongest gust

96.1 km/h

16 Mar 2025

Hottest feels-like

40.8 °C

25 Jun 2025

Coldest feels-like

-17.7 °C

20 Jan 2025

Snowiest day

8.9 cm

10 Jan 2025

Sunniest day

14.1 h

22 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 Oak Ridge?

Oak Ridge has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,275 mm of precipitation per year.

What is the hottest day ever recorded in Oak Ridge?

The hottest day measured in Oak Ridge between 1940 and 2025 was 1 July 2012, reaching 40.1 °C.

What is the coldest day in Oak Ridge?

The coldest day measured in Oak Ridge between 1940 and 2025 was 21 January 1985, at -28.9 °C.

Does it snow in Oak Ridge?

Yes. Oak Ridge gets on average 21.8 cm of snow per year and has around 59 frost days.

Has the climate of Oak Ridge warmed?

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

What is the wettest day in Oak Ridge?

The wettest day measured in Oak Ridge between 1940 and 2025 was 27 March 1994, with 122 mm of rain in 24 hours.

What was the windiest day in Oak Ridge?

The windiest day measured in Oak Ridge between 1940 and 2025 was 13 March 1993, with winds reaching 37.7 km/h.

What is the warmest month in Oak Ridge?

The warmest month in Oak Ridge is July (24.7 °C on average); the coldest is January (3.1 °C).

How much does it rain in Oak Ridge?

Oak Ridge receives on average 1,275 mm of precipitation per year, spread over about 138 rainy days.

Is it sunny in Oak Ridge?

Oak Ridge gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

What is the biggest single-day snowfall in Oak Ridge?

The heaviest 24-hour snowfall measured in Oak Ridge between 1940 and 2025 was 13 March 1993, with 35.0 cm.

Are there tropical nights in Oak Ridge?

Yes: Oak Ridge has on average 58 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Oak Ridge?

In Oak Ridge, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 21 August 1983, and the lowest was -34.5 °C on 21 January 1985.

Compare Oak Ridge with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Oak Ridge

Other cities — United States

All cities in United States →