Climate averages 1991–2020
Houston weather
in April.
A warm, wet month: the 7th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in Houston: daytime highs average 25.4°C and nights cool to about 15.9°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 96 mm of rain on roughly 9 days, which makes April a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 52 min on an average April day.
The nearest other city in this atlas is Pasadena (Texas), United States (17 km away). In April its highs average 25.2°C, about as warm as Houston, with 96 mm of rain.
Among the 498 cities listed in the United States, Houston ranks 66th of 498 for the warmest April highs and joint 336th of 498 for the driest April (rainfall, lowest first). The mean April high of those 498 cities is 19.4°C; Houston is 6.0°C warmer than that mean.
From April to May, average highs rise by 3.7°C to 29.1°C, and monthly rainfall falls from 96 mm to 90 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Houston climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.7°C7.5°C | 7.5°C | 106 | 10.0 | 10.510 h |
| February | 18.7°C9.3°C | 9.3°C | 84 | 9.1 | 11.111 h |
| March | 21.9°C12.5°C | 12.5°C | 94 | 9.2 | 12.012 h |
| April, selected | 25.4°C15.9°C | 15.9°C | 96 | 8.9 | 12.913 h |
| May | 29.1°C20.3°C | 20.3°C | 90 | 9.8 | 13.614 h |
| June | 31.7°C23.5°C | 23.5°C | 113 | 12.7 | 14.014 h |
| July | 32.8°C24.4°C | 24.4°C | 91 | 12.7 | 13.914 h |
| August | 33.3°C24.5°C | 24.5°C | 98 | 13.2 | 13.213 h |
| September | 30.8°C22.1°C | 22.1°C | 118 | 11.8 | 12.412 h |
| October | 26.8°C17.4°C | 17.4°C | 105 | 8.7 | 11.511 h |
| November | 21.3°C12.1°C | 12.1°C | 103 | 8.3 | 10.711 h |
| December | 17.6°C8.6°C | 8.6°C | 105 | 9.6 | 10.310 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Pasadena (Texas), United States in AprilUnited States · 17 kmHigh 25.2°C · Low 16.3°C · 96 mm rain
- Missouri City in AprilUnited States · 23 kmHigh 25.5°C · Low 16.3°C · 92 mm rain
- Pearland in AprilUnited States · 23 kmHigh 25.3°C · Low 16.4°C · 94 mm rain
- Sugar Land in AprilUnited States · 31 kmHigh 25.6°C · Low 16.2°C · 89 mm rain
- Baytown in AprilUnited States · 37 kmHigh 25.0°C · Low 16.3°C · 98 mm rain
- League City in AprilUnited States · 38 kmHigh 24.6°C · Low 17.1°C · 93 mm rain
- Cypress in AprilUnited States · 40 kmHigh 25.5°C · Low 15.7°C · 96 mm rain
- The Woodlands in AprilUnited States · 46 kmHigh 25.5°C · Low 15.6°C · 106 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Houston) is explained once on the Houston year overview and on the Sources, method and limits page.
Pasadena (Texas), United States lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.