Climate averages 1991–2020
Tyler weather
in December.
A cool, wet month: the 11th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Tyler: daytime highs average 14.0°C and nights cool to about 5.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 101 mm of rain on roughly 9 days, which makes December a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 04 min on an average December day.
The nearest other city in this atlas is Longview (55 km away). In December its highs average 14.1°C, about as warm as Tyler, with 104 mm of rain.
Among the 498 cities listed in the United States, Tyler ranks joint 163rd of 498 for the warmest December highs and joint 381st of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Tyler is 3.4°C warmer than that mean.
From December to January, average highs fall by 1.0°C to 13.0°C, and monthly rainfall falls from 101 mm to 90 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
Tyler climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.0°C4.0°C | 4.0°C | 90 | 8.3 | 10.310 h |
| February | 15.2°C5.9°C | 5.9°C | 100 | 8.3 | 11.011 h |
| March | 19.3°C9.4°C | 9.4°C | 107 | 10.0 | 12.012 h |
| April | 23.7°C13.5°C | 13.5°C | 105 | 9.2 | 13.013 h |
| May | 27.7°C18.2°C | 18.2°C | 113 | 11.2 | 13.814 h |
| June | 31.3°C22.3°C | 22.3°C | 86 | 10.0 | 14.214 h |
| July | 33.7°C24.3°C | 24.3°C | 57 | 8.5 | 14.114 h |
| August | 34.1°C24.3°C | 24.3°C | 61 | 6.7 | 13.313 h |
| September | 30.5°C20.9°C | 20.9°C | 73 | 6.6 | 12.412 h |
| October | 25.0°C15.2°C | 15.2°C | 108 | 7.5 | 11.411 h |
| November | 18.4°C9.3°C | 9.3°C | 95 | 8.0 | 10.511 h |
| December, selected | 14.0°C5.2°C | 5.2°C | 101 | 8.8 | 10.110 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
- Longview in DecemberUnited States · 55 kmHigh 14.1°C · Low 5.1°C · 104 mm rain
- Mesquite in DecemberUnited States · 130 kmHigh 13.9°C · Low 4.8°C · 94 mm rain
- Garland in DecemberUnited States · 140 kmHigh 13.6°C · Low 4.6°C · 91 mm rain
- Shreveport in DecemberUnited States · 147 kmHigh 14.3°C · Low 5.2°C · 120 mm rain
- Dallas in DecemberUnited States · 149 kmHigh 14.1°C · Low 5.0°C · 89 mm rain
- Richardson in DecemberUnited States · 149 kmHigh 13.6°C · Low 4.6°C · 91 mm rain
- Plano in DecemberUnited States · 150 kmHigh 13.4°C · Low 4.6°C · 91 mm rain
- Allen in DecemberUnited States · 153 kmHigh 13.3°C · Low 4.5°C · 91 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 Tyler) is explained once on the Tyler year overview and on the Sources, method and limits page.