Bartlesville climate — normals and trends

Q: What is the climate of Bartlesville?

Bartlesville has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,008 mm of precipitation per year.

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

The hottest day measured in Bartlesville between 1940 and 2025 was 2 August 2012, reaching 44.3 °C.

Q: What is the coldest day in Bartlesville?

The coldest day measured in Bartlesville between 1940 and 2025 was 4 January 1947, at -27.3 °C.

Q: Does it snow in Bartlesville?

Yes. Bartlesville gets on average 23.8 cm of snow per year and has around 72 frost days.

Q: Has the climate of Bartlesville warmed?

Yes: Bartlesville warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bartlesville?

The wettest day measured in Bartlesville between 1940 and 2025 was 20 October 1983, with 112 mm of rain in 24 hours.

Q: What was the windiest day in Bartlesville?

The windiest day measured in Bartlesville between 1940 and 2025 was 29 April 1984, with winds reaching 49.5 km/h.

Q: What is the warmest month in Bartlesville?

The warmest month in Bartlesville is July (27.6 °C on average); the coldest is January (1.3 °C).

Q: How much does it rain in Bartlesville?

Bartlesville receives on average 1,008 mm of precipitation per year, spread over about 98 rainy days.

Q: Is it sunny in Bartlesville?

Bartlesville gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Bartlesville (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 1,008 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 (27.6 °C on average) and the coldest is January (1.3 °C). Rainfall peaks in May.

Bartlesville averages 72 frost days, 85 hot days (≥ 30 °C) and 98 rainy days per year.

Bartlesville has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The number of frost days there went from about 79 to 65 per year over the period.

The hottest day of the period reached 44.3 °C (on 2 August 2012) and the coldest -27.3 °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

BartlesvilleOklahoma

coords: 36.75°, -95.98°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthJanuary

Mean daily temperature

15.0°C

Average daily high

20.6°C

Average daily low

10.0°C

Annual rainfall

1,008mm

Sunshine / day

9.4h

Mean relative humidity

66%

Average peak wind

18.3km/h

Seasonal range

26.3°C

Frost days (< 0 °C)

72 d/yr

Hot days (≥ 30 °C)

85 d/yr

Rainy days (≥ 1 mm)

98 d/yr

Annual snowfall

23.8 cm

Average feels-like high

19.7 °C

Average feels-like low

8.0 °C

Average peak gust

38.2 km/h

Tropical nights (≥ 20 °C)

80 d/yr

Solar radiation

16.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.28 · 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

44.3 °C

2 August 2012

Coldest day

-27.3 °C

4 January 1947

Wettest day

112 mm

20 October 1983

Windiest day

49.5 km/h

29 April 1984

Strongest gust

106.2 km/h

27 March 1975

Hottest feels-like

46.5 °C

3 August 2011

Coldest feels-like

-32.4 °C

4 January 1947

Snowiest day

26.5 cm

15 February 1993

Sunniest day

14.5 h

24 June 2019

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.7 °C30 July 2025	-19.6 °C20 February 2025	15.9 °C	1,400 mm	81	66
2024	38.0 °C24 June 2024	-18.0 °C14 January 2024	16.9 °C	1,072 mm	107	49
2023	40.8 °C20 August 2023	-8.3 °C31 January 2023	16.5 °C	936 mm	107	57
2022	40.3 °C19 July 2022	-17.9 °C22 December 2022	15.8 °C	884 mm	114	82
2021	36.4 °C23 August 2021	-25.7 °C16 February 2021	15.9 °C	1,172 mm	95	61
2020	36.1 °C17 July 2020	-11.1 °C14 February 2020	15.6 °C	1,073 mm	90	67
2019	37.1 °C20 August 2019	-13.3 °C4 March 2019	15.3 °C	1,425 mm	91	70
2018	39.1 °C20 July 2018	-17.1 °C1 January 2018	15.5 °C	970 mm	106	86
2017	40.0 °C22 July 2017	-15.7 °C7 January 2017	16.6 °C	1,017 mm	93	47
2016	37.6 °C11 August 2016	-16.9 °C18 December 2016	16.7 °C	988 mm	99	60
2015	37.8 °C9 August 2015	-15.8 °C8 January 2015	15.9 °C	1,190 mm	87	62
2014	38.5 °C23 August 2014	-21.7 °C6 January 2014	14.7 °C	749 mm	91	80
2013	38.4 °C10 July 2013	-13.2 °C7 December 2013	14.6 °C	1,159 mm	85	83
2012	44.3 °C2 August 2012	-10.8 °C26 December 2012	17.9 °C	630 mm	111	50
2011	43.5 °C2 August 2011	-24.8 °C10 February 2011	16.1 °C	859 mm	110	74
2010	41.2 °C13 August 2010	-21.9 °C9 January 2010	15.5 °C	958 mm	106	75
2009	38.8 °C12 July 2009	-13.5 °C28 January 2009	15.0 °C	977 mm	73	76
2008	38.8 °C4 August 2008	-14.3 °C21 December 2008	14.8 °C	1,151 mm	70	91
2007	39.0 °C14 August 2007	-15.4 °C16 January 2007	15.7 °C	1,190 mm	78	76
2006	41.4 °C19 July 2006	-14.8 °C8 December 2006	16.9 °C	726 mm	107	49
2005	37.9 °C22 July 2005	-18.3 °C9 December 2005	15.8 °C	747 mm	104	59
2004	36.4 °C26 August 2004	-14.5 °C6 January 2004	15.4 °C	1,070 mm	67	63
2003	38.8 °C20 July 2003	-15.2 °C23 January 2003	15.1 °C	1,019 mm	74	78
2002	37.3 °C26 July 2002	-22.5 °C4 March 2002	15.1 °C	829 mm	91	68
2001	38.4 °C9 August 2001	-16.9 °C2 January 2001	15.8 °C	893 mm	85	72
2000	40.3 °C2 September 2000	-15.4 °C17 December 2000	15.4 °C	1,067 mm	90	77
1999	39.7 °C11 August 1999	-13.0 °C4 January 1999	15.9 °C	1,075 mm	72	47
1998	38.9 °C26 July 1998	-13.6 °C22 December 1998	16.4 °C	1,048 mm	114	56
1997	36.3 °C25 July 1997	-17.2 °C18 January 1997	14.5 °C	1,186 mm	71	67
1996	40.7 °C6 July 1996	-21.2 °C3 February 1996	14.3 °C	1,139 mm	76	80
1995	37.8 °C11 July 1995	-13.3 °C9 December 1995	14.8 °C	1,127 mm	75	71
1994	36.6 °C25 June 1994	-13.2 °C9 February 1994	14.9 °C	1,157 mm	73	70
1993	39.3 °C31 July 1993	-16.4 °C18 February 1993	14.1 °C	1,360 mm	72	78
1992	35.6 °C7 July 1992	-9.4 °C16 January 1992	15.0 °C	1,279 mm	53	49
1991	39.2 °C1 August 1991	-11.7 °C26 January 1991	15.8 °C	1,062 mm	97	64
1990	38.1 °C28 August 1990	-17.3 °C24 December 1990	15.9 °C	1,413 mm	93	47
1989	36.6 °C26 August 1989	-24.6 °C23 December 1989	14.2 °C	878 mm	78	85
1988	38.8 °C8 August 1988	-18.2 °C8 January 1988	15.0 °C	984 mm	95	74
1987	38.2 °C2 August 1987	-13.8 °C16 December 1987	15.3 °C	1,231 mm	80	59
1986	42.2 °C30 July 1986	-12.4 °C27 January 1986	15.6 °C	1,230 mm	80	69
1985	38.2 °C31 July 1985	-20.9 °C20 January 1985	14.5 °C	1,314 mm	83	81
1984	40.1 °C29 August 1984	-27.3 °C19 January 1984	14.8 °C	1,107 mm	92	62
1983	39.5 °C22 August 1983	-23.3 °C30 December 1983	14.5 °C	1,176 mm	87	73
1982	38.7 °C26 August 1982	-19.6 °C10 January 1982	15.0 °C	1,063 mm	88	72
1981	37.7 °C20 July 1981	-22.5 °C11 February 1981	15.5 °C	1,192 mm	81	62
1980	41.9 °C30 July 1980	-16.1 °C10 February 1980	15.6 °C	927 mm	115	74
1979	36.5 °C30 July 1979	-24.1 °C1 February 1979	13.9 °C	885 mm	85	86
1978	40.5 °C26 July 1978	-19.3 °C18 February 1978	14.4 °C	781 mm	101	90
1977	39.8 °C24 July 1977	-22.5 °C10 January 1977	15.5 °C	971 mm	88	73
1976	36.8 °C31 July 1976	-17.4 °C8 January 1976	14.3 °C	715 mm	67	78
1975	36.7 °C11 August 1975	-13.9 °C18 December 1975	14.3 °C	977 mm	76	86
1974	40.6 °C21 July 1974	-17.4 °C12 January 1974	14.6 °C	1,064 mm	68	71
1973	35.6 °C25 August 1973	-20.2 °C12 January 1973	14.5 °C	1,495 mm	69	62
1972	38.0 °C26 July 1972	-17.0 °C15 January 1972	14.3 °C	884 mm	82	76
1971	37.3 °C13 July 1971	-17.4 °C8 February 1971	14.9 °C	976 mm	85	74
1970	40.8 °C8 August 1970	-18.5 °C8 January 1970	14.5 °C	909 mm	90	84
1969	38.9 °C15 July 1969	-12.4 °C1 January 1969	14.4 °C	852 mm	83	84
1968	38.3 °C9 August 1968	-20.7 °C7 January 1968	14.3 °C	882 mm	79	83
1967	36.9 °C7 August 1967	-14.6 °C8 March 1967	14.8 °C	799 mm	70	73
1966	39.2 °C11 July 1966	-19.3 °C24 December 1966	14.6 °C	603 mm	77	84
1965	37.7 °C26 August 1965	-12.3 °C24 February 1965	15.7 °C	670 mm	88	74
1964	39.9 °C3 August 1964	-15.2 °C18 December 1964	15.2 °C	1,029 mm	83	83
1963	39.1 °C27 August 1963	-19.1 °C23 December 1963	15.5 °C	657 mm	112	81
1962	38.0 °C19 August 1962	-24.1 °C11 January 1962	14.7 °C	858 mm	87	72
1961	35.0 °C5 July 1961	-15.0 °C12 December 1961	13.9 °C	1,365 mm	60	72
1960	37.4 °C2 July 1960	-14.7 °C5 March 1960	14.1 °C	1,037 mm	81	96
1959	37.1 °C3 August 1959	-26.0 °C5 January 1959	14.5 °C	1,147 mm	81	80
1958	36.3 °C29 August 1958	-12.6 °C14 December 1958	14.3 °C	875 mm	78	77
1957	38.8 °C13 August 1957	-13.6 °C10 January 1957	14.7 °C	1,403 mm	74	61
1956	41.9 °C16 August 1956	-11.9 °C16 January 1956	15.9 °C	569 mm	120	82
1955	37.9 °C29 July 1955	-11.8 °C11 February 1955	15.2 °C	862 mm	92	84
1954	43.6 °C13 July 1954	-14.4 °C22 January 1954	16.8 °C	555 mm	120	64
1953	38.4 °C15 June 1953	-12.6 °C16 January 1953	15.9 °C	728 mm	112	58
1952	38.3 °C15 August 1952	-9.4 °C23 January 1952	15.3 °C	672 mm	112	63
1951	39.9 °C7 August 1951	-17.3 °C1 February 1951	14.1 °C	1,068 mm	81	84
1950	34.1 °C25 June 1950	-15.9 °C6 December 1950	14.0 °C	1,197 mm	37	89
1949	36.8 °C12 August 1949	-19.4 °C29 January 1949	14.7 °C	1,091 mm	72	74
1948	36.8 °C14 June 1948	-23.9 °C12 March 1948	14.5 °C	911 mm	82	80
1947	39.8 °C4 September 1947	-27.3 °C4 January 1947	14.3 °C	973 mm	77	82
1946	39.2 °C17 August 1946	-13.1 °C30 December 1946	15.8 °C	1,145 mm	72	48
1945	36.4 °C18 August 1945	-21.4 °C19 December 1945	14.3 °C	1,176 mm	64	74
1944	37.8 °C2 August 1944	-15.4 °C9 January 1944	14.9 °C	1,151 mm	68	70
1943	39.2 °C2 August 1943	-12.8 °C19 January 1943	15.0 °C	901 mm	85	75
1942	35.7 °C2 August 1942	-14.7 °C4 January 1942	14.1 °C	995 mm	66	83
1941	37.1 °C18 July 1941	-13.8 °C18 January 1941	14.3 °C	955 mm	65	82
1940	34.6 °C3 August 1940	-23.8 °C18 January 1940	12.9 °C	787 mm	51	93

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

21.6 °C

+1.0 °C

Hot days (≥ 30 °C)

81 d/yr

-4

Frost days (< 0 °C)

66 d/yr

-6

Annual rainfall

1400 mm

+392 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	5.7 °C	-1.1 °C	37 mm	-4 mm
Feb	8.4 °C	-1.3 °C	23 mm	-25 mm
Mar	20.3 °C	+5.2 °C	87 mm	-2 mm
Apr	21.6 °C	+0.7 °C	237 mm	+110 mm
May	24.7 °C	-0.5 °C	278 mm	+125 mm
Jun	30.3 °C	+0.2 °C	319 mm	+205 mm
Jul	32.6 °C	-0.4 °C	90 mm	+18 mm
Aug	31.2 °C	-1.5 °C	109 mm	+42 mm
Sep	28.8 °C	+0.4 °C	84 mm	-10 mm
Oct	24.3 °C	+2.1 °C	79 mm	-10 mm
Nov	17.9 °C	+3.2 °C	54 mm	-11 mm
Dec	12.4 °C	+3.6 °C	2 mm	-46 mm

The year's extremes

Hottest day

36.7 °C

30 Jul 2025

Coldest day

-19.6 °C

20 Feb 2025

Wettest day

90.7 mm

15 Jun 2025

Windiest day

49.0 km/h

14 Mar 2025

Strongest gust

93.2 km/h

14 Mar 2025

Hottest feels-like

41.9 °C

30 Jul 2025

Coldest feels-like

-24.9 °C

20 Feb 2025

Snowiest day

7.4 cm

18 Feb 2025

Sunniest day

14.4 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 Bartlesville?

Bartlesville has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,008 mm of precipitation per year.

What is the hottest day ever recorded in Bartlesville?

The hottest day measured in Bartlesville between 1940 and 2025 was 2 August 2012, reaching 44.3 °C.

What is the coldest day in Bartlesville?

The coldest day measured in Bartlesville between 1940 and 2025 was 4 January 1947, at -27.3 °C.

Does it snow in Bartlesville?

Yes. Bartlesville gets on average 23.8 cm of snow per year and has around 72 frost days.

Has the climate of Bartlesville warmed?

Yes: Bartlesville warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bartlesville?

The wettest day measured in Bartlesville between 1940 and 2025 was 20 October 1983, with 112 mm of rain in 24 hours.

What was the windiest day in Bartlesville?

The windiest day measured in Bartlesville between 1940 and 2025 was 29 April 1984, with winds reaching 49.5 km/h.

What is the warmest month in Bartlesville?

The warmest month in Bartlesville is July (27.6 °C on average); the coldest is January (1.3 °C).

How much does it rain in Bartlesville?

Bartlesville receives on average 1,008 mm of precipitation per year, spread over about 98 rainy days.

Is it sunny in Bartlesville?

Bartlesville gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

What is the biggest single-day snowfall in Bartlesville?

The heaviest 24-hour snowfall measured in Bartlesville between 1940 and 2025 was 15 February 1993, with 26.5 cm.

Are there tropical nights in Bartlesville?

Yes: Bartlesville has on average 80 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bartlesville?

In Bartlesville, between 1940 and 2025, the highest apparent temperature reached 46.5 °C on 3 August 2011, and the lowest was -32.4 °C on 4 January 1947.

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