Winters in Sodertalje, Sweden are cold and variable, with temperatures often dropping below freezing but occasionally rising into the mid-6s. Mornings can be quite chilly, even in the spring months of March and April, when daytime highs can reach the mid-teens. Summer brings mild to warm conditions, with July being the warmest month on average, while August and September are cooler. Autumn is generally cool, but temperatures remain relatively steady, ranging from around 0°C to 16°C. The coldest months of the year, December and January, see temperatures fluctuate between -20°C and 8°C, while February and November have similar temperature ranges, with averages closer to 3°C.