Climate averages 1991–2020
Yakima weather
in December.
A cold, moderately wet month: the coolest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Yakima: daytime highs average 2.5°C and nights cool to about -4.0°C. By daytime temperature it is the coolest month of the year.
Expect about 66 mm of rain on roughly 11 days, which makes December a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 8 h 39 min on an average December day.
The nearest other city in this atlas is Tri-Cities (108 km away). In December its highs average 5.6°C, 3.1°C warmer than Yakima, with 35 mm of rain.
Among the 498 cities listed in the United States, Yakima ranks joint 426th of 498 for the warmest December highs and 244th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Yakima is 8.0°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 2.7°C, and monthly rainfall falls from 66 mm to 58 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
Yakima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.7°C-4.3°C | -4.3°C | 58 | 10.9 | 9.09 h |
| February | 6.0°C-2.9°C | -2.9°C | 42 | 7.5 | 10.310 h |
| March | 10.9°C-0.4°C | -0.4°C | 33 | 7.5 | 11.912 h |
| April | 15.6°C2.9°C | 2.9°C | 19 | 4.7 | 13.514 h |
| May | 21.4°C7.8°C | 7.8°C | 18 | 4.3 | 15.015 h |
| June | 25.6°C11.6°C | 11.6°C | 9.5 | 2.5 | 15.816 h |
| July | 31.0°C15.3°C | 15.3°C | 3.3 | 0.8 | 15.415 h |
| August | 30.2°C15.1°C | 15.1°C | 3.0 | 0.8 | 14.214 h |
| September | 24.9°C10.7°C | 10.7°C | 8.4 | 1.9 | 12.613 h |
| October | 16.4°C5.1°C | 5.1°C | 30 | 5.5 | 10.911 h |
| November | 7.9°C-0.4°C | -0.4°C | 52 | 9.0 | 9.59 h |
| December, selected | 2.5°C-4.0°C | -4.0°C | 66 | 11.0 | 8.69 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
- Tri-Cities in DecemberUnited States · 108 kmHigh 5.6°C · Low -1.2°C · 35 mm rain
- Kennewick in DecemberUnited States · 114 kmHigh 5.4°C · Low -1.4°C · 35 mm rain
- Auburn in DecemberUnited States · 152 kmHigh 6.8°C · Low 1.5°C · 196 mm rain
- Kent in DecemberUnited States · 157 kmHigh 7.1°C · Low 1.9°C · 178 mm rain
- Federal Way in DecemberUnited States · 159 kmHigh 6.2°C · Low 1.1°C · 196 mm rain
- Renton in DecemberUnited States · 162 kmHigh 7.1°C · Low 1.8°C · 178 mm rain
- Tacoma in DecemberUnited States · 164 kmHigh 6.7°C · Low 1.8°C · 174 mm rain
- Bellevue in DecemberUnited States · 170 kmHigh 6.8°C · Low 1.7°C · 178 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 Yakima) is explained once on the Yakima year overview and on the Sources, method and limits page.