Houston weather in March
March in Houston: warm, a little rain, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Houston · #149 of 1413 destinations to visit in March · comfort 90/100 (tier S)
- Days
- 25°C
- Nights
- 14°C
- Wet days
- 5
- Sun
- 8.3 h
- Humidity
- 75%
- Daylight
- 12 h

Traveller notes on Houston in March
March is the month Houston regulars name without hesitation: outside hurricane season, relatively dry, and sunny enough that mid-70s Fahrenheit days are the expectation, with lows nearer 50F. What they warn about is the swing inside a single day - you can start in jeans and a sweatshirt and be out of the sweatshirt by ten in the morning - so the packing is layers and a lined windbreaker rather than a heavy coat. The one thing March will not give you is the Gulf: the water at Galveston is still too cold to swim in and the beach can be blustery. The other thing to know is that the rodeo and the local school spring break both land mid-month. The record: 24.5C days, 14.2C nights, 4.8 precipitation days carrying 75.3mm and 8.3 hours of sun.
Other months in Houston
Regulars widely call this the year's best weather month, with humidity noticeably lower than the stifling summer stretch that runs through September, though they're honest this is relative - someone who genuinely dislikes humidity may still find it uncomfortable even by the city's own improved standard. Our row backs that read, 29C over 18.4C nights, with 82.4mm of rain across 6.4 days. Regulars note early-month days can still push into the high 80s or low 90s Fahrenheit before a cold front typically arrives later in the month to cool things down, and that hurricane risk has largely passed by this point, with the more serious storm activity concentrated in August and September instead. The record: humidity 72 percent, 9 hours of sun, a 16.3 kph wind and AQI 45.
Regulars call February one of this city's two worst-behaved months, alongside January, and describe a real split within it: early in the month lows can sit in the mid-30s to 50s Fahrenheit, while late February can swing to highs in the mid-50s to 70s. Our row averages across that at 20.7C reading as 20C over 10C nights, with 79.3mm of rain across 7.7 days - and a trace of snow, 0.6cm, that most years never lands. Whichever half of the month you land in depends on how far south a Canadian cold front has pushed, which is the honest reason no single number describes it well. Humidity stays real even in the cooler stretch, and Houston's own line for it is warm-feeling sixties and seventies. The record: 6.7 hours of sun, a 20.3 kph wind and AQI 44.
April is one of the three months regulars name for outdoor plans here, alongside March and November, and their instruction is layers you can shed: a late cold front can still come through and drop the temperature sharply for a day. Our row gives 26.8C reading as 28C over 16.6C nights, with 76.4mm across 5.7 days. The number that separates this from Austin two hundred miles west is humidity - 75 percent here against 68 there, on nearly identical temperatures - and it is why the same 27C feels heavier. Their other rule is negative and firm: do not come in summer. The record: a dew point of 14.7C, 9.2 hours of sun, a 21.4 kph wind and AQI 43.
Houston forum threads describe January as one of the city's least predictable months, with daytime highs commonly in the 40s-50s Fahrenheit and overnight lows dropping into the 20s-30s, but posters were direct that a warm, nearly 70F day can be followed almost immediately by a hard freeze. Rain was flagged as a recurring feature too, coming and going through the month rather than settling into a single wet or dry stretch. The universal advice across threads: pack layers for both cold and mild conditions and check the forecast close to your travel dates, since January and February were repeatedly named the city's two toughest weather months to plan around.
Year-round notes are on Houston's overview. Add your own note from Houston's card on the map.
Houston climate normals — March
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Houston in March
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsHouston Livestock Show and Rodeo, Spring break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Houston's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherHouston's best weather comes in March, April and November — separate windows, not one continuous season.
March includes Houston Livestock Show and Rodeo.
Best weatherFair weatherToughest weather
What's on in Houston in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Houston Livestock Show and Rodeo
25 Feb – 25 Mar · usuallyMajor festivalCrowdedBook earlyTwenty days at NRG Park with a rodeo and a stadium concert every night, plus a barbecue contest the week before and a trail ride into downtown. It is the biggest thing Houston does. Source ↗
- Nature
Azaleas and spring bloom
1 Mar – 5 Apr · usuallyWildflowers & bloomsRiver Oaks and the Bayou Bend gardens flower in March, and the Hill Country bluebonnets are a three-hour drive west at the same time. The short, decent stretch of the Houston year. Source ↗
- Hazard
Cedar and oak pollen
15 Dec – 15 Apr · usuallyPollen seasonMountain cedar blows in from the Hill Country around the turn of the year, oak takes over through February and March, and the city publishes a pollen count daily because enough people plan their week around it. Source ↗
Nearby, and something's on
Within 300 km of Houston — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Houston?
Houston in March — FAQ
- Is March a good time to visit Houston?
- March in Houston: warm, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Houston on SeasonMap's comfort score (90/100).
- What is the weather like in Houston in March?
- In March, Houston averages a daily high of 24.5°C and a low of 14.2°C, with about 75.3 mm of rain over roughly 4.8 rainy days.
- What is the air quality in Houston in March?
- Houston has a mean US Air Quality Index of about 46 in March.
Within 300 km: Austin's Bluebonnets in the Hill Country around 15 Mar – 20 Apr.