Climate averages 1991–2020
Houston weather
in January.
A mild, wet month: the coolest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Houston: daytime highs average 16.7°C and nights cool to about 7.5°C. By daytime temperature it is the coolest month of the year.
Expect about 106 mm of rain on roughly 10 days, which makes January a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 28 min on an average January day.
The nearest other city in this atlas is Pasadena (Texas), United States (17 km away). In January its highs average 16.8°C, about as warm as Houston, with 106 mm of rain.
Among the 498 cities listed in the United States, Houston ranks joint 110th of 498 for the warmest January highs and joint 433rd of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Houston is 7.2°C warmer than that mean.
From January to February, average highs rise by 2.0°C to 18.7°C, and monthly rainfall falls from 106 mm to 84 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Pasadena (Texas), United States in JanuaryUnited States · 17 kmHigh 16.8°C · Low 7.9°C · 106 mm rain
- Missouri City in JanuaryUnited States · 23 kmHigh 17.0°C · Low 7.9°C · 98 mm rain
- Pearland in JanuaryUnited States · 23 kmHigh 17.0°C · Low 8.0°C · 101 mm rain
- Sugar Land in JanuaryUnited States · 31 kmHigh 17.0°C · Low 7.8°C · 92 mm rain
- Baytown in JanuaryUnited States · 37 kmHigh 16.6°C · Low 7.8°C · 109 mm rain
- League City in JanuaryUnited States · 38 kmHigh 16.6°C · Low 8.7°C · 103 mm rain
- Cypress in JanuaryUnited States · 40 kmHigh 16.4°C · Low 7.2°C · 95 mm rain
- The Woodlands in JanuaryUnited States · 46 kmHigh 16.1°C · Low 7.0°C · 100 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.