Climate averages 1991–2020
Pasadena (Texas), United States weather
in December.
A mild, wet month: the 11th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Pasadena (Texas), United States: daytime highs average 17.7°C and nights cool to about 9.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 105 mm of rain on roughly 10 days, which makes December a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 17 min on an average December day.
The nearest other city in this atlas is Pearland (16 km away). In December its highs average 17.9°C, about as warm as Pasadena (Texas), United States, with 101 mm of rain.
Among the 498 cities listed in the United States, Pasadena (Texas), United States ranks joint 72nd of 498 for the warmest December highs and joint 408th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Pasadena (Texas), United States is 7.2°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 16.8°C, and monthly rainfall rises from 105 mm to 106 mm.
The annual picture
December 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
Pasadena (Texas), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.8°C7.9°C | 7.9°C | 106 | 10.0 | 10.510 h |
| February | 18.7°C9.7°C | 9.7°C | 84 | 9.1 | 11.111 h |
| March | 21.8°C12.9°C | 12.9°C | 94 | 9.2 | 12.012 h |
| April | 25.2°C16.3°C | 16.3°C | 96 | 8.9 | 12.913 h |
| May | 28.9°C20.6°C | 20.6°C | 90 | 9.8 | 13.614 h |
| June | 31.5°C23.7°C | 23.7°C | 113 | 12.7 | 14.014 h |
| July | 32.6°C24.6°C | 24.6°C | 91 | 12.7 | 13.914 h |
| August | 33.0°C24.6°C | 24.6°C | 98 | 13.2 | 13.213 h |
| September | 30.6°C22.3°C | 22.3°C | 118 | 11.8 | 12.412 h |
| October | 26.7°C17.7°C | 17.7°C | 105 | 8.7 | 11.511 h |
| November | 21.4°C12.5°C | 12.5°C | 103 | 8.3 | 10.711 h |
| December, selected | 17.7°C9.0°C | 9.0°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
December in nearby cities
- Pearland in DecemberUnited States · 16 kmHigh 17.9°C · Low 9.2°C · 101 mm rain
- Houston in DecemberUnited States · 17 kmHigh 17.6°C · Low 8.6°C · 105 mm rain
- Baytown in DecemberUnited States · 23 kmHigh 17.6°C · Low 9.0°C · 110 mm rain
- League City in DecemberUnited States · 23 kmHigh 17.6°C · Low 9.9°C · 104 mm rain
- Missouri City in DecemberUnited States · 33 kmHigh 17.9°C · Low 9.1°C · 98 mm rain
- Sugar Land in DecemberUnited States · 42 kmHigh 17.9°C · Low 9.0°C · 95 mm rain
- Cypress in DecemberUnited States · 56 kmHigh 17.2°C · Low 8.3°C · 102 mm rain
- The Woodlands in DecemberUnited States · 59 kmHigh 17.0°C · Low 8.1°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 Pasadena) is explained once on the Pasadena (Texas), United States year overview and on the Sources, method and limits page.
Houston lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.