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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Norwich Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows Harrow’s current conditions and the next few hours. Today’s high is expected to reach 12–14°C, with cloud cover building through the afternoon and a 40% chance of light rain by early evening — a mild but unsettled spring day for northwest London.
What is the weather in Harrow, London for the next 10 days?
Temperatures over the next 10 days will hover between 9°C and 15°C, with the wettest period likely mid-week. The 10 day weather forecast UK shows a weak low-pressure system drifting across southern England, bringing intermittent showers on Wednesday and Thursday. From Friday, drier conditions return as high pressure builds, though overnight lows may dip to 6°C. For a longer view, the harrow weather 15 days outlook suggests a gradual warming trend into the following week.
Will it rain in Harrow tomorrow?
Yes, there is a 60% chance of rain by late morning, with weather in Harrow London tomorrow expected to see 2–5mm of rainfall. The met office weather Harrow data indicates a brisk south-westerly wind at 15–20 mph, making it feel cooler than the 11°C air temperature. Showers should clear by evening, leaving a dry but cloudy night.
What is the Harrow weather 14 day forecast?
The harrow weather 14 day outlook shows a split: a showery first week with highs of 13°C, followed by a drier second week as high pressure settles. Night frosts are unlikely. Check the bbc weather harrow 14 days page for daily updates.
Is there a Harrow 21 day weather forecast available?
Long-range models for the harrow 21 day weather forecast suggest a return to mild, unsettled conditions around day 18, with temperatures near 14°C. Accuracy beyond 15 days is low; the bbc weather harrow 30 days outlook is best used as a trend guide only.
How does Harrow compare to other UK cities this week?
Harrow is slightly warmer than Birmingham Weather (by about 2°C) and similar to Bristol Weather. It is likely to see less rain than Glasgow Weather this week, making it a relatively mild spot in the south-east.