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Live forecasts update automatically; written guidance last reviewed 13 June 2026 by the Insight Britain weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows the current conditions for Harrow, including temperature, wind speed, and precipitation chance. It updates automatically to help you plan your day, whether you are heading into town or staying local.
How should I read the live forecast for Harrow?
The widget displays key variables: temperature, wind speed and direction, humidity, and precipitation probability. Use the hourly breakdown to see when rain is most likely, especially during autumn and winter. The “Feels like” temperature accounts for wind chill, which can be noticeable on open streets in central Harrow.
What is Harrow’s typical climate through the seasons?
Harrow has a temperate maritime climate, typical of south-east England. Winters (December–February) are cool with occasional frost, average lows near freezing, and periodic rain from Atlantic systems. Snowfall is light and rarely settles for long. Spring (March–May) brings mild temperatures and increasing sunshine, though April can still be showery. Summers (June–August) are warm but not extreme, with daytime highs often in the low twenties Celsius, accompanied by moderate humidity. Rainfall is spread throughout the year, with slightly wetter months in autumn (October–November). Wind is generally light to moderate, though stronger gusts can occur during autumn storms.
How does Harrow’s geography affect its weather?
Harrow lies on a series of low hills rising to about 125 metres, which can cause slightly cooler temperatures and increased cloud cover compared with the neighbouring Thames Valley. The built-up urban area produces a modest heat island effect, keeping overnight minima a degree or two higher than in open countryside. There is no significant coastal influence, as Harrow is roughly 50 miles inland.
When is the best time to visit Harrow, and what should I pack?
Late spring (May) and early autumn (September) offer the most reliable weather for outdoor activities, with mild temperatures and lower rainfall probability. Pack layers: a waterproof jacket is useful year-round, while a warm coat and gloves are advisable from November to March. Summer visitors should bring light clothing and sun protection, as sunny spells can be strong.
Which nearby areas do readers also check?
Residents often compare conditions in Wembley, Pinner, Northolt, Stanmore, Edgware and Greenford, all within a few miles. These locations share the same general climate but can vary slightly due to local topography.
What will the weather be like in Harrow tomorrow?
Tomorrow’s weather can be seen in the hourly breakdown of the live forecast above. Look for the precipitation chance and temperature curve to decide if you need an umbrella. Conditions often change quickly, so check back in the morning for the most accurate update.
What is the 10–14 day outlook for Harrow?
The extended outlook is available via our 10-day forecast. Reliability decreases beyond day seven, but the general trend for temperature and rainfall can help you plan a week ahead. We recommend checking the live forecast daily for changes.
Does it rain a lot in Harrow?
Harrow receives moderate rainfall, typical of south-east England. Rain falls on about 110–120 days per year, mostly as light to moderate showers. Heavy downpours are more common in autumn. Compare conditions across the UK on our UK weather hub or browse all locations on the towns A–Z page for a broader picture.
Are there any weather warnings for Harrow?
We link live UK weather warnings when the Met Office issues alerts for rain, wind, snow or ice. These are rare but can affect travel and outdoor plans. The live forecast above will also indicate severe weather symbols if a warning is in force.