Winters in West Sacramento are mild, with temperatures ranging from freezing to moderate highs, averaging around 11-12°C. Spring brings gradual warming, with averages increasing to 16°C by April and peaking at 22°C in June, marking the beginning of warm summers. Summer days can be quite hot, with temperatures often reaching above 40°C, while nights remain relatively mild. Autumn sees a return to milder conditions, with temperatures decreasing back to around 12-16°C, similar to winter averages.