With a population of around 149,000, Harrow sits in England, United Kingdom. The city operates in the GMT/BST time zone.
In 2025, Harrow recorded an average annual temperature of 54°F. The hottest temperatures reached 92°F in July; the coolest were 25°F in January. Total precipitation for the year was 27 inches, with the wettest month being July. Snowfall for the year totaled approximately 1 inches.
View current conditions and forecast for Harrow · More cities in England