Houston weather in March
In March, Houston has daytime highs averaging 22 °C, nights around 13 °C, with 10 wet days. Figures are 1991–2020 climate normals.
- 22.4°C Average high
- 12.9°C Average low
- 10days Wet days
- 98mm Rainfall
- 12h Daylight
Daily temperatures through March
How March develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 March | 21.1 °C | 11.4 °C | 33 % |
| 11–20 March | 22.2 °C | 13.2 °C | 36 % |
| 21–31 March | 23.6 °C | 14.1 °C | 29 % |
- Average highs rise from 21.1 °C early in March to 23.6 °C by the end of it.
- Rain is most likely over days 11–20 of March (36 % of days) and least likely over days 21–31 (29 %).
What to expect
| Measure | Typical March | Share of the month |
|---|---|---|
| Days above 25 °C | 8.2 of 31 | 26 % |
| Days above 30 °C | 0.1 of 31 | 0 % |
| Days below 0 °C | 0.2 of 31 | 1 % |
| Days with more than 1 mm rain | 10 of 31 | 33 % |
Conditions in March
| Measure | Average |
|---|---|
| Mean temperature | 17 °C |
| Record high (1991–2020) | 31 °C |
| Record low (1991–2020) | -3.8 °C |
| Relative humidity | 76 % |
| Wind speed | 21 km/h |
| Cloud cover | 59 % |
March compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 17.3 °C | 107 mm | 58 % |
| February | 19.3 °C | 92 mm | 62 % |
| March | 22.4 °C | 98 mm | 59 % |
| April | 25.7 °C | 105 mm | 56 % |
| May | 29.3 °C | 101 mm | 55 % |
See all twelve months for Houston
- March is the 8th warmest month here.
- It is the 3rd driest month of the year.
- It ranks 11th for least cloud cover.
- Days last about 12 hours from sunrise to sunset.
- It rains on 10 of 31 days — 33 % of the month.
- Nights are about 9.4 °C cooler than the middle of the day.
- The hottest March day on record since 1991 reached 31 °C, 8.8 °C above the usual daytime high.
QuestionsMarch in Houston, answered
How warm is Houston in March?
Daily highs average 22 °C and nights fall to about 13 °C, a spread of 9.4 °C between afternoon and dawn. That makes March the 8th warmest month of the year here.
Does it rain much in Houston in March?
March averages 98 mm of rain, spread over about 10 of the 31 days — 33 % of the month. Cloud cover averages 59 % of the sky.
How long are the days in March?
Houston averages 12 hours between sunrise and sunset in March. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
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
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. 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.