December is one of the cooler months of the year in Longview, with average highs near 5.8°C and lows around 0.6°C (mean 3.2°C). It is a relatively wet time of year, averaging 261 mm of rainfall and 94% relative humidity across the period.
December is one of the cooler months of the year in Longview. Across 45 years of records, the warmest Decembers in Longview were 2023 and 2025 — when the month averaged 6.1°C — while the coldest was 1990 at -0.1°C. Typical December days reach 5.8°C with nights near 0.6°C. The long-term trend is warming, about 0.5°C per decade.
December is a relatively wet time of year in Longview, averaging 261 mm of rainfall. The wettest December on record was 2015 with 534 mm, while the driest was 1985 at 78 mm.
Relative humidity in Longview during December averages 94%. The most humid December was 2021 at 98%, and the least humid was 2009 at 85%.
December receives about 0.9 kWh/m²/day of solar energy in Longview. The sunniest Decembers were 1985 and 2009 at 1.2 kWh/m²/day, and the cloudiest was 2012 at 0.7.
Average wind speed in Longview during December is 0.2 m/s. The windiest Decembers were 2018, 2019 and 2022, among others at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 2.3°C | 3.1°C | 3.3°C | 3.3°C | 4.5°C | +2.2°C |
| Avg High | 5.2°C | 5.6°C | 5.7°C | 5.7°C | 7.0°C | +1.8°C |
| Avg Low | -0.6°C | 0.5°C | 0.8°C | 0.9°C | 2.1°C | +2.7°C |
| Avg Rain | 213 mm | 284 mm | 247 mm | 258 mm | 320 mm | +107 mm |
December temperatures in Longview have risen by about 2.8°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -16.2°C (1990) to a record high of 14.3°C (2015).
Rainfall in December is a relatively wet time of year, averaging 261 mm, with a wettest year of 534 mm.
A quieter season to visit Longview
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Longview. That said, December — with days averaging 5.8°C and nights around 0.6°C (mean 3.2°C) and higher rainfall (261 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 | 8.5°C | 6.1°C | 3.6°C | 14.0°C | -1.9°C | 415 mm | 97% | 0.1 m/s | — |
| 2024 | 7.3°C | 4.7°C | 2.2°C | 11.6°C | -3.3°C | 328 mm | 96% | 0.1 m/s | 0.9 |
| 2023 🔥 | 8.6°C | 6.1°C | 3.6°C | 13.7°C | -0.2°C | 331 mm | 95% | 0.1 m/s | 0.9 |
| 2022 | 5.3°C | 2.8°C | 0.4°C | 12.3°C | -8.8°C | 280 mm | 95% | 0.2 m/s | 0.8 |
| 2021 | 4.5°C | 2.3°C | 0.2°C | 13.5°C | -9.8°C | 322 mm | 98% | 0.1 m/s | 0.8 |
| 2020 | 7.6°C | 5.0°C | 2.3°C | 12.6°C | -2.1°C | 246 mm | 93% | 0.1 m/s | 1 |
| 2019 | 6.7°C | 4.4°C | 2.0°C | 11.2°C | -3.0°C | 237 mm | 97% | 0.2 m/s | 0.8 |
| 2018 | 6.8°C | 4.5°C | 2.1°C | 10.7°C | -2.4°C | 254 mm | 93% | 0.2 m/s | 0.9 |
| 2017 | 5.3°C | 2.5°C | -0.3°C | 10.5°C | -7.1°C | 185 mm | 91% | 0.2 m/s | 1.1 |
| 2016 | 3.3°C | 1.0°C | -1.2°C | 7.7°C | -8.2°C | 209 mm | 95% | 0.2 m/s | 1 |
| 2015 🌧️ | 6.1°C | 4.2°C | 2.2°C | 14.3°C | -4.9°C | 534 mm | 97% | 0.2 m/s | 0.8 |
| 2014 | 7.8°C | 5.3°C | 2.7°C | 14.0°C | -5.6°C | 261 mm | 92% | 0.1 m/s | 1 |
| 2013 | 3.9°C | 1.1°C | -1.7°C | 10.6°C | -11.4°C | 111 mm | 92% | 0.2 m/s | 1 |
| 2012 | 5.2°C | 3.2°C | 1.3°C | 10.6°C | -3.5°C | 334 mm | 98% | 0.1 m/s | 0.7 |
| 2011 | 5.8°C | 2.7°C | -0.5°C | 10.8°C | -3.4°C | 142 mm | 94% | 0.2 m/s | 1.1 |
| 2010 | 6.4°C | 4.2°C | 2.0°C | 11.8°C | -5.3°C | 316 mm | 94% | 0.2 m/s | 0.9 |
| 2009 | 4.5°C | 1.2°C | -2.2°C | 11.3°C | -11.8°C | 154 mm | 85% | 0.2 m/s | 1.2 |
| 2008 | 3.5°C | 1.0°C | -1.5°C | 10.8°C | -11.9°C | 209 mm | 95% | 0.2 m/s | 0.9 |
| 2007 | 5.1°C | 3.0°C | 0.8°C | 13.5°C | -4.9°C | 392 mm | 98% | 0.2 m/s | 0.8 |
| 2006 | 6.0°C | 3.3°C | 0.7°C | 12.1°C | -3.9°C | 248 mm | 93% | 0.2 m/s | 0.9 |
| 2005 | 5.5°C | 3.2°C | 0.9°C | 13.9°C | -5.2°C | 311 mm | 91% | 0.1 m/s | 1 |
| 2004 | 7.5°C | 5.0°C | 2.5°C | 12.5°C | -1.3°C | 165 mm | 95% | 0.1 m/s | 0.9 |
| 2003 | 6.2°C | 4.1°C | 2.1°C | 10.6°C | -6.3°C | 253 mm | 96% | 0.1 m/s | 0.8 |
| 2002 | 7.3°C | 4.8°C | 2.3°C | 13.6°C | -0.6°C | 308 mm | 95% | 0.1 m/s | 0.8 |
| 2001 | 5.8°C | 3.7°C | 1.5°C | 11.0°C | -2.1°C | 304 mm | 94% | 0.1 m/s | 0.9 |
| 2000 | 6.0°C | 3.3°C | 0.5°C | 11.3°C | -3.3°C | 123 mm | 93% | 0.1 m/s | 0.9 |
| 1999 | 7.2°C | 4.7°C | 2.2°C | 10.9°C | -2.7°C | 278 mm | 94% | 0.2 m/s | 0.9 |
| 1998 | 5.3°C | 2.7°C | 0.1°C | 12.0°C | -11.7°C | 402 mm | 92% | 0.1 m/s | 0.8 |
| 1997 | 6.3°C | 3.7°C | 1.1°C | 11.5°C | -2.8°C | 175 mm | 93% | 0.1 m/s | 1 |
| 1996 | 6.2°C | 3.5°C | 0.8°C | 14.0°C | -3.2°C | 532 mm | 97% | 0.1 m/s | 0.9 |
| 1995 | 6.6°C | 4.1°C | 1.6°C | 12.6°C | -4.5°C | 288 mm | 92% | 0.2 m/s | 0.8 |
| 1994 | 5.7°C | 3.4°C | 1.2°C | 11.6°C | -5.9°C | 347 mm | 94% | 0.1 m/s | 1 |
| 1993 | 6.5°C | 3.5°C | 0.4°C | 12.7°C | -3.7°C | 248 mm | 94% | 0.2 m/s | 0.8 |
| 1992 | 3.8°C | 1.5°C | -0.8°C | 7.4°C | -5.7°C | 220 mm | 96% | 0.2 m/s | 1 |
| 1991 | 6.1°C | 3.9°C | 1.7°C | 10.3°C | -3.4°C | 184 mm | 96% | 0.1 m/s | 1 |
| 1990 ❄️ | 2.7°C | -0.1°C | -2.9°C | 9.2°C | -16.2°C | 167 mm | 88% | 0.2 m/s | 0.9 |
| 1989 | 7.8°C | 4.3°C | 0.9°C | 13.4°C | -3.7°C | 155 mm | 95% | 0.2 m/s | 1 |
| 1988 | 6.0°C | 3.0°C | 0.0°C | 11.5°C | -8.1°C | 175 mm | 94% | 0.1 m/s | 0.9 |
| 1987 | 4.5°C | 2.0°C | -0.6°C | 12.5°C | -6.3°C | 286 mm | 95% | 0.2 m/s | 1 |
| 1986 | 6.3°C | 3.3°C | 0.3°C | 9.5°C | -3.3°C | 176 mm | 93% | 0.2 m/s | 0.9 |
| 1985 | 4.1°C | 0.5°C | -3.1°C | 7.3°C | -12.0°C | 78 mm | 89% | 0.2 m/s | 1.2 |
| 1984 | 3.4°C | 0.7°C | -1.9°C | 6.6°C | -10.3°C | 168 mm | 93% | 0.2 m/s | 1.1 |
| 1983 | 2.6°C | 0.0°C | -2.6°C | 10.5°C | -14.9°C | 207 mm | 90% | 0.1 m/s | — |
| 1982 | 5.3°C | 2.7°C | 0.0°C | 12.1°C | -6.2°C | 337 mm | 93% | 0.1 m/s | — |
| 1981 | 6.5°C | 3.9°C | 1.4°C | 12.2°C | -2.9°C | 336 mm | 97% | 0.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 5.8°C with lows near 0.6°C (mean 3.2°C), based on 45 years of NASA POWER data.
December averages 261 mm of rainfall in Longview, a relatively wet time of year. The wettest on record was 534 mm in 2015.
The hottest December reached 14.3°C in 2015. The coldest dipped to -16.2°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.8°C. Daytime highs moved from 4.4°C to 6.8°C and overnight lows from -1.2°C to 2°C over the same span.
December is one of the cooler months of the year in Longview and a relatively wet time of year, so plan for around 5.8°C daytime highs and 0.6°C at night.
Yes — December is the coldest month of the year in Longview, averaging 3.2°C.
For December in Longview, pack warm layers and a jacket for chilly mornings, with typical highs of 5.8°C and lows of 0.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 94% — quite humid.
Average wind speed in December is 0.2 m/s. The windiest December on record averaged 0.2 m/s (1981).
The wettest December on record was 2015 with 534 mm. On average, December sees 261 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 Longview 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.
