Oklahoma City climate

Name: Oklahoma City
Address: US

Oklahoma City is warmest in July, with average highs of 34 °C, and coldest in January, when nights average -0.2 °C. May is the wettest month (115 mm) and January the driest (36 mm). Figures are 1991–2020 climate normals.

Across a full year Oklahoma City averages 830 mm of rain, 162 days above 25 °C and 48 days below freezing.

United States · 366 m elevation · population 681,054 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 34 °C
Coldest month January -0.2 °C
Driest month January 36 mm
Wettest month May 115 mm
Least cloud October 37 % cloud
Hottest on record August 44 °C
Coldest on record February -24 °C

What to expectOklahoma City through the year

Oklahoma City has a clear annual cycle: average daily highs run from 9.9 °C in January to 34 °C in July, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 162 days a year reach 25 °C, 97 of them reach 30 °C, 48 nights drop below freezing. The warmest reading in the 1991–2020 record is 44 °C, in August.

Rain is strongly seasonal. May averages 115 mm against 36 mm in January — 3.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	9.9 °C	36 mm	46 %
February	12.7 °C	45 mm	50 %
March	17.9 °C	71 mm	50 %
April	22.6 °C	95 mm	47 %
May	26.8 °C	115 mm	51 %
June	31.2 °C	96 mm	45 %
July	34.0 °C	60 mm	39 %
August	33.5 °C	65 mm	39 %
September	29.2 °C	76 mm	38 %
October	23.0 °C	76 mm	37 %
November	16.0 °C	49 mm	42 %
December	10.3 °C	46 mm	47 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	9.9 °C	-0.2 °C	3.8 °C	23.8 °C	-14.8 °C	0	0	16
February	12.7 °C	1.6 °C	6.1 °C	30.4 °C	-24.5 °C	0	0	11
March	17.9 °C	6.4 °C	11.1 °C	32.6 °C	-14.6 °C	3	0	4
April	22.6 °C	11.2 °C	16.1 °C	36.6 °C	-3.8 °C	9	1	0
May	26.8 °C	16.5 °C	21.1 °C	37.6 °C	3.3 °C	21	7	0
June	31.2 °C	21.5 °C	26.0 °C	40.7 °C	12.1 °C	29	20	0
July	34.0 °C	24.1 °C	28.8 °C	42.9 °C	15.9 °C	31	28	0
August	33.5 °C	23.5 °C	28.2 °C	43.7 °C	13.9 °C	31	26	0
September	29.2 °C	19.2 °C	23.7 °C	41.2 °C	5.7 °C	26	13	0
October	23.0 °C	13.0 °C	17.3 °C	34.2 °C	-4.8 °C	12	2	0
November	16.0 °C	6.5 °C	10.5 °C	28.1 °C	-8.9 °C	1	0	4
December	10.3 °C	1.2 °C	5.0 °C	25.0 °C	-14.9 °C	0	0	13

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	36 mm	5	10 h/day	46 %	65 %	21 km/h
February	45 mm	5	11 h/day	50 %	64 %	22 km/h
March	71 mm	7	12 h/day	50 %	63 %	24 km/h
April	95 mm	8	13 h/day	47 %	62 %	25 km/h
May	115 mm	11	14 h/day	51 %	67 %	23 km/h
June	96 mm	10	15 h/day	45 %	65 %	21 km/h
July	60 mm	7	14 h/day	39 %	58 %	18 km/h
August	65 mm	6	14 h/day	39 %	58 %	17 km/h
September	76 mm	7	12 h/day	38 %	62 %	18 km/h
October	76 mm	7	11 h/day	37 %	62 %	21 km/h
November	49 mm	5	10 h/day	42 %	65 %	22 km/h
December	46 mm	5	9.8 h/day	47 %	67 %	21 km/h

How Oklahoma City compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Oklahoma City	34 °C	-0.2 °C	830 mm	162
Tulsa · United States	33 °C	-0.5 °C	1,043 mm	155
Wichita · United States	33 °C	-3.0 °C	890 mm	143
Plano · United States	34 °C	3.6 °C	1,079 mm	182

Where Oklahoma City ranks

Ranking	Position	Value
The warmest places in North America in July	32nd of 50	34 °C
Places with the best weather in North America in October	37th of 50	93/100
The warmest places in North America in August	41st of 50	34 °C

Planning a trip? See the best time to visit Oklahoma City.

QuestionsCommon questions about Oklahoma City’s climate

When is the best time to visit Oklahoma City?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, September, October sit closest to 20 °C on average, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Oklahoma City get?

In July, the warmest month, daily highs average 34 °C. About 97 days a year pass 30 °C. The highest value in the 1991–2020 record is 44 °C.

How cold does it get in winter?

Nights average -0.2 °C in January, the coldest month. A normal year has 48 nights below freezing.

Which month is wettest in Oklahoma City?

May, averaging 115 mm over 11 days with rain. The driest month is January with 36 mm. The year as a whole averages 830 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Oklahoma City rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 35.468°, -97.516° , 366 m above sea level (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.