Passage: Bucharest has a humid continental climate (Dfa), with warm to hot, humid summers and cold, snowy winters. Owing to its position on the Romanian Plain, the city's winters can get windy, though some of the winds are mitigated due to urbanisation. Winter temperatures often dip below 0 °C (32 °F), sometimes even to −20 °C (−4 °F). In summer, the average temperature is 23 °C (73 °F) (the average for July and August). Temperatures frequently reach 35 to 40 °C (95 to 104 °F) in midsummer in the city centre. Although average precipitation and humidity during summer are low, occasional heavy storms occur. During spring and autumn, daytime temperatures vary between 17 and 22 °C (63 and 72 °F), and precipitation during spring tends to be higher than in summer, with more frequent yet milder periods of rain.

Question: How low can winter temperature get?
−20 °C (−4 °F)