Ilwaco, WA
Climate overview — based on NOAA 1991-2020 normals from LONG BEACH EXP STN, WA US.
Year-round temperatures (°F)
Climate summary
Ilwaco has an annual average temperature of 49.8°F with about 78.5 inches of precipitation per year. The warmest month is August (average high 66.5°F), and the coldest is February (average low 35.4°F). December is typically the wettest month (12.15 in) and July the driest (1.01 in).
Best time to visit Ilwaco
Full guide →Climate change signal
All-time records →39 of 366 (10.7%) of Ilwaco's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1960s | 23 | |
| 1970s | 69 | |
| 1980s | 78 | |
| 1990s | 74 | |
| 2000s | 61 | |
| 2010s | 61 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 48.8°F | 35.9°F | 42.4°F | 12.04 in | — | 23 |
| February | 50.4°F | 35.4°F | 42.9°F | 7.76 in | — | 18 |
| March | 52.4°F | 37.3°F | 44.9°F | 8.71 in | — | 24 |
| April | 55.0°F | 40.2°F | 47.6°F | 6.79 in | — | 21 |
| May | 58.9°F | 45.1°F | 52.0°F | 3.55 in | — | 16 |
| June | 62.0°F | 48.9°F | 55.4°F | 2.58 in | — | 14 |
| July | 65.2°F | 51.8°F | 58.5°F | 1.01 in | — | 11 |
| August | 66.5°F | 51.6°F | 59.0°F | 1.63 in | — | 11 |
| September | 66.0°F | 47.9°F | 56.9°F | 2.66 in | — | 12 |
| October | 59.7°F | 42.2°F | 51.0°F | 8.20 in | — | 20 |
| November | 52.5°F | 38.2°F | 45.4°F | 11.43 in | — | 22 |
| December | 48.2°F | 35.8°F | 42.0°F | 12.15 in | — | 23 |
Climate twins of Ilwaco
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).