Mattawa, WA
Full City Profile · Washington · Benton County County
2.1
/5.0
C
Fair
3,553
Population
3,553/sq mi density
$41,250
Median Income
$14,909 per capita
$1,089
Median Rent
31.7% income on rent
56°F
Avg Temperature
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
D
Economy
1.8 / 5.0
$41,250 median income, 13.7% unemployment
B
Affordability
3.4 / 5.0
F
Education
1.1 / 5.0
0.7% bachelor's degree or higher
Mattawa enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 35°F in January while summers reach 79°F in July. Annual precipitation totals 7.5 inches. The area receives 9.9 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
35°F Jan (2°C)
79°F Jul (26°C)
| Annual Average | 56.0°F |
| 4% above US avg | |
| January Average | 35°F (2°C) |
| July Average | 79°F (26°C) |
Geography
| Elevation | 756 ft (230 m) |
| Area | 0.7 sq mi (1.9 km²) |
| Population Density | 3,553/sq mi |
| Coordinates | 46.7364°N, 119.9053°W |
| Timezone | America/Los_Angeles |
| County | Benton County County |
| Nearest Airport | Grant County International (MWH) 43 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
| Good Days % | 81.7% |
| Unhealthy Days | 3 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0469 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 87.1 / 100 |
| Social Vulnerability | 30.3 / 100 |
| Community Resilience | 58.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Adams (135 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 135 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 142 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 172 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 178 km |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 184 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (2°C) | 1.1 in | Coldest |
| February | 40°F (4°C) | 0.6 in | |
| March | 47°F (9°C) | 0.7 in | |
| April | 55°F (13°C) | 0.6 in | |
| May | 64°F (18°C) | 0.6 in | |
| June | 71°F (22°C) | 0.5 in | |
| July | 79°F (26°C) | 0.2 in | Warmest |
| August | 78°F (26°C) | 0.1 in | Driest |
| September | 69°F (21°C) | 0.2 in | |
| October | 56°F (13°C) | 0.7 in | |
| November | 43°F (6°C) | 0.9 in | |
| December | 35°F (2°C) | 1.4 in | Wettest |
Mattawa has a seasonal temperature swing of 44°F / from 35°F in January to 79°F in July. Total annual precipitation is 7.5 inches, with December being the wettest month (1.4") and August the driest (0.1").