Aspen Hill experiences a continental climate with distinct seasonal variations. Winters are typically cold, with temperatures often below freezing and averaging around 3°C in January and February. Spring arrives in March with a noticeable warm-up, reaching average highs of 9°C, and continues to rise through April and May, which see temperatures peak at around 18°C. Summers are mild, with July and August being the warmest months, averaging 26°C, while autumns bring a gentle cool-down, with October and November temperatures averaging around 9°C before dropping into winter once again.