Washington, UK's climate is mild and temperate, with minimal extreme temperatures. Winters are cool but not cold, ranging from just below freezing in January and February to slightly above in March and April. Spring brings gradual warming, with May and June seeing average highs around 21-23°C. Summer is warm but not hot, with July typically the warmest month at an average high of 26°C. Autumn cools down quickly, returning to winter-like temperatures by October, although November can be mild again.