Washington weather

Headline:

Mainly dry overnight. Occasionally heavy rain Friday.

This Evening and Tonight:

Any remaining showers soon dying out to leave a dry evening with clear spells. Staying dry through the early hours, with light winds, although some isolated mist or shallow fog patches could develop in prone spots by dawn. Minimum temperature 12 °C.

Friday:

Cloud and wind increasing through the morning, with rain spreading from the southwest, turning heavy at times. Brighter by the afternoon, with a risk of heavy and maybe thundery showers. Maximum temperature 20 °C.

Outlook for Saturday to Monday:

Starting dry and bright on Saturday, with heavy and thundery showers developing later. Mainly dry with isolated showers and breezy in north on Monday. Sunny on Tuesday. Warm throughout.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019

This period will tend to see a northwest to southeast split in the weather across the UK, with northwestern parts experiencing spells of rain, which could be heavy at times, as well as some periods of strong wind bringing a risk of coastal gales. By contrast, southern and southeastern parts of the UK should see much drier and warmer weather, which could be hot and rather humid at times, especially early to mid next week. Potential for thunderstorms to develop as any hot, settled weather breaks down from the west. Beyond that, the signals become more mixed although overall the northwest to southeast split will most probably continue. The south and southeast is likely to see some rain but it will be less frequent than in the northwest.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019

As we move into early August, the final month of the meteorological summer, confidence is low in the forecast with no one single weather pattern looking to dominate. As is often the case in summer, this could well mean plenty of fine, dry weather, interspersed with occasional rain or thundery outbreaks, leading to marked local variations in rainfall. Temperatures are likely to be above average, perhaps more especially in the south and west.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019