Weather in Oklahoma City in May

A good month. May works. It is not the peak, but nothing about it fights you. Highs average 27 °C, lows 14.9 °C, and rain falls on 13 days — nothing in the month is working against you.

May ranks 5 of 12 in Oklahoma City: past the worst of the year but short of April, which is the month to book if the dates are open.

Rain on 13 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 8 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest May day reached 38.8 °C and the coldest night fell to 1.2 °C, and the wettest single day dropped 67 mm — roughly 52% of the month's rain in one day.

May is moderately variable: 26 mm in the driest year against 369 mm in the wettest, around an average of 129 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 12.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How May sits in the year

The month is on the way up: 4.3 °C warmer than April, and June adds another 4.6 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short. Rain has already shifted: 5 days more than April had.

Daylight in May

May is at or near the longest days of Oklahoma City's year: 14 hours of daylight, gaining 0.8 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 37 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

May in Oklahoma City versus nearby

If Oklahoma City is one option among several, the nearby comparison is worth making. Tulsa is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Wichita is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: May works, with April the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Oklahoma City

See all twelve months in Oklahoma City, or where else to go in May.