London weather forecast: Overcast with a chance of rain today, mild temperatures expected

London, September 19, 2026 – Residents of London can expect an overcast day with a moderate chance of rain, according to the latest weather reports. Temperatures are set to be mild, with a high of 22°C and a low of 15°C. The day will begin with a chance of precipitation, though this is expected to decrease as the day progresses.London Weather TodayToday, September 19, 2026, London will experience overcast skies for much of the day. The maximum temperature is forecast to reach 22°C, while the minimum temperature will be around 15°C. The average temperature for the day is expected to be 18.5°C. There is a 20% chance of rain, with no precipitation amount specified. Humidity levels are predicted to be high, at 86%. Wind speeds could reach up to 51.5 kph, contributing to a blustery feel.Carry an umbrella for potential showersWith an overcast sky and a chance of rain, Londoners are advised to carry an umbrella or wear waterproof clothing when heading out today. While the chance of precipitation is not high, it is present, and the humidity will make the air feel damp. The moderate wind speeds mean that any rain could be accompanied by gusts, so securing loose items is also a good idea. Despite the cloud cover, the temperatures are mild, making it a day for comfortable layering rather than heavy winter wear.London Weather for Upcoming 7 DaysDateMax Temp (°C)Min Temp (°C)Avg Temp (°C)Condition2026-09-19221518.5Overcast2026-09-20211116.0Sunny2026-09-21231418.5Sunny2026-09-22251620.5Sunny2026-09-23231318.0Sunny intervals2026-09-24221418.0Sunny intervals2026-09-25231217.5Sunny intervalsFollowing today's overcast conditions, the weather in London is expected to improve significantly. Tomorrow, September 20, will see a shift to sunny skies with a cooler minimum temperature of 11°C, though the maximum will be slightly lower at 21°C. The trend of sunny weather is set to continue through the week, with temperatures gradually warming up. September 22 is forecast to be the warmest day of the upcoming period, reaching a high of 25°C. While the majority of the week will be sunny, there will be intervals of sunshine from September 23 onwards, with temperatures remaining pleasant. The latter half of the week will see a slight dip in average temperatures, but conditions are expected to remain largely dry and bright.Source: Data referenced in this article is taken from the latest World News and Live updates. Download the TOI app.