Weather in Houston in January

A good month. January works. It is not the peak, but nothing about it fights you. Highs average 16.5 °C, lows 5.2 °C, and rain falls on 9 days — nothing in the month is working against you.

January ranks 7 of 12 in Houston: past the worst of the year but short of March, which is the month to book if the dates are open.

Rain on 9 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16.5 °C days and 5.2 °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: 5 nights fall below freezing. Across the twenty years measured, the hottest January day reached 26.4 °C and the coldest night fell to -7.6 °C, and the wettest single day dropped 59 mm — roughly 66% of the month's rain in one day.

January is moderately variable: 13 mm in the driest year against 162 mm in the wettest, around an average of 89 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind is light at 7.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, high enough to notice on the warm days without dominating them.

How January sits in the year

This is a turning point in the year — December and February sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in January

January sits at the dark end of Houston's year — 10.4 hours of daylight against 14 at midsummer, gaining 0.5 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

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

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.

January in Houston versus nearby

If Houston is one option among several, the nearby comparison is worth making. Corpus Christi is a better bet in January — 3.3 °C warmer, 3 days less rain. San Antonio is a better bet in January — within a degree on temperature, 3 days less rain.

So: January works, with March the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Houston

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