What is the weather like in Kelso Washington?

Kelso has an oceanic climate, typical of the Pacific Northwest. The climate is influenced by the Pacific Ocean, which moderates temperatures and provides moisture. The Cascade Mountains to the east block much of the cold air from the interior of the continent, resulting in mild winters.

Temperature

The average annual temperature in Kelso is 51.3 °F (10.7 °C). The warmest month is July, with an average temperature of 66.7 °F (19.3 °C). The coldest month is December, with an average temperature of 38.5 °F (3.6 °C).

Precipitation

The average annual precipitation in Kelso is 38.3 inches (973 mm). The wettest month is November, with an average rainfall of 5.3 inches (135 mm). The driest month is July, with an average rainfall of 0.6 inches (15 mm).

Snowfall

The average annual snowfall in Kelso is 2.8 inches (7.1 cm). The snowiest month is January, with an average snowfall of 1.1 inches (2.8 cm).

Sunshine

The average annual sunshine in Kelso is 1,836 hours. The sunniest month is July, with an average of 238 hours of sunshine. The cloudiest month is December, with an average of 76 hours of sunshine.

Climate Change

The climate in Kelso is changing due to climate change. The average annual temperature has increased by 1.8 °F (1.0 °C) since the late 19th century. The annual precipitation has also increased by 10% since the late 19th century. The number of days with heavy precipitation has also increased since the late 19th century.