Winter in Neu-Ulm is cold, with January averaging around -1°C and December temperatures ranging from -13°C to 13°C. Spring arrives slowly, with March and April temperatures gradually warming up to an average of 4-5°C. Summer brings pleasant warmth, with June and July averaging highs above 18°C and occasional heatwaves reaching up to 31°C in June. Autumn is mild, with September and October temperatures oscillating between cool mornings and warm afternoons, averaging around 14-8°C. The temperature fluctuations are moderate throughout the year, with some variation in extremes but overall a relatively stable climate.