Climate averages 1991–2020
Tri-Cities weather
in March.
A cool, fairly dry month: the 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Tri-Cities: daytime highs average 14.3°C and nights cool to about 2.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 24 mm of rain on roughly 6 days, which makes March a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average March day.
The nearest other city in this atlas is Kennewick (6 km away). In March its highs average 14.2°C, about as warm as Tri-Cities, with 24 mm of rain.
Among the 498 cities listed in the United States, Tri-Cities ranks 277th of 498 for the warmest March highs and joint 18th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Tri-Cities is 0.6°C cooler than that mean.
From March to April, average highs rise by 4.9°C to 19.3°C, and monthly rainfall falls from 24 mm to 17 mm.
The annual picture
March 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
Tri-Cities climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.0°C-1.5°C | -1.5°C | 34 | 8.1 | 9.19 h |
| February | 9.3°C-0.3°C | -0.3°C | 23 | 6.2 | 10.310 h |
| March, selected | 14.3°C2.8°C | 2.8°C | 24 | 5.9 | 11.912 h |
| April | 19.3°C6.6°C | 6.6°C | 17 | 4.9 | 13.514 h |
| May | 25.0°C11.5°C | 11.5°C | 18 | 4.5 | 15.015 h |
| June | 28.9°C15.3°C | 15.3°C | 13 | 2.8 | 15.716 h |
| July | 34.2°C19.2°C | 19.2°C | 3.8 | 1.0 | 15.415 h |
| August | 33.2°C18.6°C | 18.6°C | 4.2 | 1.0 | 14.214 h |
| September | 27.5°C14.0°C | 14.0°C | 6.9 | 1.8 | 12.613 h |
| October | 18.9°C7.9°C | 7.9°C | 22 | 5.0 | 11.011 h |
| November | 10.7°C2.3°C | 2.3°C | 29 | 7.3 | 9.59 h |
| December | 5.6°C-1.2°C | -1.2°C | 35 | 8.4 | 8.79 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
March in nearby cities
- Kennewick in MarchUnited States · 6 kmHigh 14.2°C · Low 2.7°C · 24 mm rain
- Yakima in MarchUnited States · 108 kmHigh 10.9°C · Low -0.4°C · 33 mm rain
- Spokane in MarchUnited States · 207 kmHigh 9.7°C · Low -0.6°C · 63 mm rain
- Spokane Valley in MarchUnited States · 217 kmHigh 9.1°C · Low -1.2°C · 70 mm rain
- Auburn in MarchUnited States · 259 kmHigh 11.0°C · Low 2.7°C · 152 mm rain
- Kent in MarchUnited States · 263 kmHigh 11.3°C · Low 3.0°C · 139 mm rain
- Gresham in MarchUnited States · 264 kmHigh 11.5°C · Low 2.4°C · 178 mm rain
- Federal Way in MarchUnited States · 266 kmHigh 10.3°C · Low 2.2°C · 152 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 Tri-Cities) is explained once on the Tri-Cities year overview and on the Sources, method and limits page.
Kennewick lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.