Weiyuan experiences mild winters with an average low of -2°C in January and February, gradually warming up to a high of 10°C by April. Spring arrives in late March, with temperatures ranging from 3°C to 8°C, averaging around 5°C. Summer is hot and humid, with July being the warmest month, averaging highs around 28°C. Autumn brings comfortable temperatures, with September and October averaging highs of 22°C and lows of 14°C. Winters are typically chilly but not extremely cold, with January being the coldest month, averaging a low of -2°C.