December is one of the cooler months of the year in Eagle Pass, with average highs near 19.6°C and lows around 6.2°C (mean 12.9°C). It is one of the drier months, averaging 18 mm of rainfall and 62% relative humidity across the period.
December is one of the cooler months of the year in Eagle Pass. Across 45 years of records, the warmest December in Eagle Pass was 2021 — when the month averaged 19.5°C — while the coldest was 1989 at 7.9°C. Typical December days reach 19.6°C with nights near 6.2°C. The long-term trend is warming, about 0.7°C per decade.
December is one of the drier months in Eagle Pass, averaging 18 mm of rainfall. The wettest December on record was 2016 with 75 mm, while the driest was 2003 at 0 mm.
Relative humidity in Eagle Pass during December averages 62%. The most humid December was 1986 at 80%, and the least humid was 1999 at 43%.
December receives about 3 kWh/m²/day of solar energy in Eagle Pass. The sunniest Decembers were 2010 and 2020 at 3.8 kWh/m²/day, and the cloudiest was 2014 at 2.2.
Average wind speed in Eagle Pass during December is 2.3 m/s. The windiest Decembers were 1997 and 2020 at 2.8 m/s, while the calmest were 1995 and 2021 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.7°C | 12.9°C | 12.0°C | 13.1°C | 15.9°C | +4.2°C |
| Avg High | 18.2°C | 19.5°C | 19.0°C | 19.6°C | 23.0°C | +4.8°C |
| Avg Low | 5.1°C | 6.4°C | 5.0°C | 6.5°C | 8.8°C | +3.7°C |
| Avg Rain | 25 mm | 17 mm | 9 mm | 24 mm | 16 mm | -9 mm |
December temperatures in Eagle Pass have risen by about 4.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -8.1°C (1989) to a record high of 34.1°C (2024).
Rainfall in December is one of the drier months, averaging 18 mm, with a wettest year of 75 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.6°C per decade, widening the gap between day and night.
A quieter season to visit Eagle Pass
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Eagle Pass. That said, December — with days averaging 19.6°C and nights around 6.2°C (mean 12.9°C) and low rainfall (18 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.0°C | 17.0°C | 9.9°C | 31.9°C | 5.1°C | 1 mm | 51% | 2.2 m/s | — |
| 2024 | 23.6°C | 16.9°C | 10.1°C | 34.1°C | 1.9°C | 3 mm | 55% | 2.1 m/s | 2.9 |
| 2023 | 21.8°C | 14.6°C | 7.4°C | 30.7°C | 2.0°C | 20 mm | 63% | 2.2 m/s | 3.2 |
| 2022 | 20.9°C | 14.2°C | 7.5°C | 29.1°C | -7.1°C | 2 mm | 63% | 2.1 m/s | 2.8 |
| 2021 🔥 | 26.7°C | 19.5°C | 12.4°C | 33.9°C | 4.7°C | 3 mm | 54% | 1.9 m/s | 3.1 |
| 2020 | 20.8°C | 13.0°C | 5.2°C | 27.2°C | -2.0°C | 64 mm | 47% | 2.8 m/s | 3.8 |
| 2019 | 22.6°C | 14.9°C | 7.2°C | 32.9°C | 0.7°C | 1 mm | 46% | 2.2 m/s | 3.5 |
| 2018 | 18.3°C | 12.0°C | 5.6°C | 25.9°C | 0.4°C | 36 mm | 70% | 2.4 m/s | 3.2 |
| 2017 | 18.2°C | 12.2°C | 6.1°C | 27.9°C | 0.4°C | 52 mm | 71% | 2 m/s | 2.5 |
| 2016 🌧️ | 18.8°C | 13.4°C | 8.0°C | 28.2°C | -2.7°C | 75 mm | 76% | 2 m/s | 2.4 |
| 2015 | 21.1°C | 14.0°C | 6.9°C | 28.7°C | 1.1°C | 10 mm | 65% | 2.3 m/s | 3.4 |
| 2014 | 19.5°C | 14.0°C | 8.4°C | 26.2°C | -0.1°C | 11 mm | 75% | 2.2 m/s | 2.2 |
| 2013 | 17.5°C | 11.1°C | 4.6°C | 30.2°C | -2.1°C | 15 mm | 67% | 2 m/s | 2.9 |
| 2012 | 21.9°C | 14.8°C | 7.8°C | 33.5°C | -0.3°C | 2 mm | 48% | 2.4 m/s | 3.1 |
| 2011 | 17.3°C | 11.5°C | 5.6°C | 27.2°C | -2.3°C | 34 mm | 68% | 2.5 m/s | 2.6 |
| 2010 | 21.1°C | 13.1°C | 5.1°C | 27.0°C | -0.9°C | 1 mm | 45% | 2.2 m/s | 3.8 |
| 2009 | 16.1°C | 9.8°C | 3.5°C | 28.8°C | -3.6°C | 25 mm | 69% | 2.1 m/s | 2.7 |
| 2008 | 21.0°C | 13.2°C | 5.5°C | 30.4°C | 1.9°C | 5 mm | 50% | 2.5 m/s | 3.4 |
| 2007 | 21.5°C | 14.0°C | 6.5°C | 30.2°C | -1.2°C | 4 mm | 50% | 2.6 m/s | 3.3 |
| 2006 | 19.4°C | 12.7°C | 6.1°C | 26.2°C | -0.7°C | 15 mm | 56% | 2.3 m/s | 2.9 |
| 2005 | 19.5°C | 12.1°C | 4.8°C | 28.9°C | -4.2°C | 2 mm | 54% | 2.2 m/s | 3.2 |
| 2004 | 18.3°C | 11.3°C | 4.3°C | 26.2°C | -3.1°C | 3 mm | 67% | 2.2 m/s | 3.4 |
| 2003 | 19.8°C | 12.4°C | 5.0°C | 26.0°C | -0.4°C | 0 mm | 60% | 2.5 m/s | 3.6 |
| 2002 | 19.1°C | 12.1°C | 5.1°C | 27.8°C | -0.3°C | 6 mm | 68% | 2.4 m/s | 3.5 |
| 2001 | 19.7°C | 12.9°C | 6.1°C | 26.9°C | -1.7°C | 16 mm | 64% | 2.2 m/s | 3 |
| 2000 | 15.7°C | 9.2°C | 2.6°C | 23.2°C | -1.9°C | 16 mm | 73% | 2.3 m/s | 2.9 |
| 1999 | 20.5°C | 13.1°C | 5.7°C | 30.5°C | -1.2°C | 1 mm | 43% | 2.5 m/s | 3.4 |
| 1998 | 19.4°C | 12.6°C | 5.7°C | 28.7°C | -0.9°C | 6 mm | 66% | 2.3 m/s | 3.2 |
| 1997 | 19.1°C | 11.7°C | 4.3°C | 27.7°C | -3.1°C | 15 mm | 56% | 2.8 m/s | 3.2 |
| 1996 | 19.7°C | 12.5°C | 5.3°C | 29.1°C | -6.2°C | 8 mm | 65% | 2.2 m/s | 3.3 |
| 1995 | 19.1°C | 12.3°C | 5.5°C | 28.7°C | -1.7°C | 8 mm | 65% | 1.9 m/s | 3.2 |
| 1994 | 20.5°C | 14.7°C | 8.9°C | 30.9°C | 2.2°C | 35 mm | 69% | 2.1 m/s | 2.4 |
| 1993 | 20.5°C | 14.2°C | 7.9°C | 27.8°C | 0.3°C | 3 mm | 51% | 2.5 m/s | 2.8 |
| 1992 | 19.0°C | 12.8°C | 6.6°C | 26.0°C | 0.7°C | 21 mm | 71% | 2.3 m/s | 2.3 |
| 1991 | 17.7°C | 12.8°C | 7.9°C | 24.4°C | 0.5°C | 72 mm | 78% | 2.1 m/s | 2.4 |
| 1990 | 19.2°C | 12.5°C | 5.8°C | 27.5°C | -4.5°C | 4 mm | 60% | 2.2 m/s | 3.3 |
| 1989 ❄️ | 14.5°C | 7.9°C | 1.2°C | 25.2°C | -8.1°C | 8 mm | 60% | 2.3 m/s | 3.1 |
| 1988 | 19.9°C | 13.2°C | 6.5°C | 27.2°C | 0.1°C | 8 mm | 55% | 2.3 m/s | 3.2 |
| 1987 | 20.3°C | 13.2°C | 6.1°C | 33.3°C | -1.6°C | 21 mm | 58% | 2.4 m/s | 3 |
| 1986 | 15.8°C | 10.7°C | 5.6°C | 22.7°C | -1.2°C | 74 mm | 80% | 2.2 m/s | 2.3 |
| 1985 | 17.6°C | 10.7°C | 3.7°C | 24.6°C | -3.7°C | 1 mm | 69% | 2 m/s | 3.3 |
| 1984 | 21.5°C | 16.0°C | 10.5°C | 27.4°C | -0.8°C | 67 mm | 76% | 2.3 m/s | 2.4 |
| 1983 | 15.1°C | 8.3°C | 1.6°C | 28.2°C | -7.6°C | 3 mm | 58% | 2.6 m/s | — |
| 1982 | 17.9°C | 11.4°C | 4.8°C | 27.7°C | -1.1°C | 37 mm | 65% | 2.3 m/s | — |
| 1981 | 21.2°C | 13.6°C | 6.1°C | 31.4°C | -2.0°C | 3 mm | 54% | 2.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 19.6°C with lows near 6.2°C (mean 12.9°C), based on 45 years of NASA POWER data.
December averages 18 mm of rainfall in Eagle Pass, one of the drier months. The wettest on record was 75 mm in 2016.
The hottest December reached 34.1°C in 2024. The coldest dipped to -8.1°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 4.4°C. Daytime highs moved from 18.7°C to 23.4°C and overnight lows from 5.3°C to 9.5°C over the same span.
December is one of the cooler months of the year in Eagle Pass and one of the drier months, so plan for around 19.6°C daytime highs and 6.2°C at night.
Not quite — December is the 2nd coolest month in Eagle Pass, averaging 12.9°C.
For December in Eagle Pass, pack warm layers and a jacket for chilly mornings, with typical highs of 19.6°C and lows of 6.2°C.
Relative humidity in December averages 62% — moderately humid.
Average wind speed in December is 2.3 m/s. The windiest December on record averaged 2.8 m/s (1997).
The wettest December on record was 2016 with 75 mm. On average, December sees 18 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Eagle Pass behaves each December, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for December specifically, along with year-by-year records and how the month has changed over the decades.
