Winters in Hertford are typically cool and variable, with temperatures often dropping below freezing point in January and February. Mornings can be chilly, but afternoons can see a rise to mild conditions. Spring brings gradual warming, with March marking the beginning of more stable and warmer days. Summer is warm, with July and August seeing high temperatures, although August's highs are slightly lower than those in July. Autumn sees a return to cooler temperatures, with mornings often chilly by October.