Harrow Weather Forecast, Greater London HA1 1

Today 27 Apr London and South East England

Fog and low cloud quickly clearing and burning back to the coast, leaving a fine and sunny morning. Some cloud likely to bubble up during the afternoon, but still plenty of sunshine for all. Light winds, and feeling warm. Maximum Temperature 22C.

Tonight 27 Apr London and South East England

Mostly clear skies overnight, with a few mist and fog patches perhaps developing in places as winds fall light, though they are not expected to be as widespread as previous nights. A local rural grass frost is also possible. Minimum Temperature 3C.

Mon 28 Apr London and South East England

Any early mist and fog patches clearing quickly to give a warm and sunny day. Feeling very warm at times in the sunshine with light winds. Maximum Temperature 24C.

Tue 29 Apr London and South East England

Dry with plenty of sunshine each day, temperatures increasing to become very warm. Generally light winds, although easterly breezes from midweek bringing some slightly cooler temperatures to eastern coasts.

Wed 30 Apr London and South East England

Dry with plenty of sunshine each day, temperatures increasing to become very warm. Generally light winds, although easterly breezes from midweek bringing some slightly cooler temperatures to eastern coasts.

Thu 1 May London and South East England

Dry with plenty of sunshine each day, temperatures increasing to become very warm. Generally light winds, although easterly breezes from midweek bringing some slightly cooler temperatures to eastern coasts.

Fri 2 May London and South East England

Following a widely fine and very warm spell through the week, temperatures are most likely to return back closer to average from the north during Friday. Whilst a little rain is possible during this transition, most areas remaining largely dry. Largely fine but cooler conditions are then most likely over the weekend. However, likely cloudier and breezier at times across some northern areas with a chance of rain. Into the following week, conditions will probably turn more changeable overall, with dry, settled periods interspersed with some spells of wetter weather. This will bring some showers or longer spells of rain at times, which could be heavy and thundery in places. Temperatures will likely be around average.

Sat 3 May London and South East England

Following a widely fine and very warm spell through the week, temperatures are most likely to return back closer to average from the north during Friday. Whilst a little rain is possible during this transition, most areas remaining largely dry. Largely fine but cooler conditions are then most likely over the weekend. However, likely cloudier and breezier at times across some northern areas with a chance of rain. Into the following week, conditions will probably turn more changeable overall, with dry, settled periods interspersed with some spells of wetter weather. This will bring some showers or longer spells of rain at times, which could be heavy and thundery in places. Temperatures will likely be around average.

Harrow Weather Forecast

Today 27 Apr London and South East England

Tonight 27 Apr London and South East England

Mon 28 Apr London and South East England

Tue 29 Apr London and South East England

Wed 30 Apr London and South East England

Thu 1 May London and South East England

Fri 2 May London and South East England

Sat 3 May London and South East England

Temperature Forecast Met Office

Temperature Real-Time

Chenies (Hertfordshire) Radar

National Satellite

National Synoptic

Harrow Temperature Statistics

April Temperature

Northolt (6km)

Lowest 11 January, 2025

Average 2025

Highest 11 April, 2025

Lowest 2 March, 2025

Average March

Highest 20 March, 2025

Lowest 8 April, 2025

Average April

Highest 11 April, 2025

Climate (2020–Present)

Northolt (6km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025