Weather in Houston in June

A hard month. June is a hard month in Houston, and worth planning around. Highs average 33.9 °C, lows 23.3 °C, and rain falls on 14 days — nothing in the month is working against you.

June ranks 10 of 12 — near the bottom of Houston's year. March is the month that works, and the swing between the two is 47 points, which is a different holiday rather than a slightly better one.

Rain on 14 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 33.9 °C days and 23.3 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 12 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest June day reached 42.1 °C and the coldest night fell to 17.4 °C, and the wettest single day dropped 73 mm — roughly 58% of the month's rain in one day.

June is moderately variable: 13 mm in the driest year against 332 mm in the wettest, around an average of 126 mm. Roughly two Junes in three land near that average, and the third does something else entirely.

Wind is light at 6.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How June sits in the year

Temperatures hold steady either side: 30.9 °C in May, 33.9 here, 34.2 in July. Nothing about the timing within the month matters much.

Daylight in June

June is at or near the longest days of Houston's year: 14 hours of daylight, holding steady all 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 — 30 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

June in Houston versus nearby

If Houston is one option among several, the nearby comparison is worth making. Corpus Christi is close enough to be a coin toss — within a degree on temperature, 5 days less rain. San Antonio is close enough to be a coin toss — within a degree on temperature, 4 days less rain.

So: June is a compromise. March is 42 points better and is what Houston is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Houston

See all twelve months in Houston, or where else to go in June.