London Marathon weather forecast
High pressure will influence the UK’s weather this weekend, but what does that mean for the thousands of people running the TCS London Marathon?
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Dry with sunny spells Saturday.
A few fog patches at first, soon clearing to leave a dry day with some patchy cloud and good sunny spells. Light and variable winds. Feeling mild in sunny spells. Maximum temperature 14 °C.
Dry and quite chilly overnight under prolonged clear spells and light winds. This will allow a few fog patches to develop in places. Minimum temperature 2 °C.
Staying dry with bright or sunny spells on Sunday morning. Turning somewhat cloudier in the afternoon, but staying mild in the sunshine. Maximum temperature 16 °C.
Staying dry and mild Monday daytime. Cloudier overnight into Tuesday with patchy rain in places, before turning drier and brighter again with sunny spells from Tuesday afternoon through Wednesday.
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This period will be dominated by high pressure to the northwest of the UK and lower pressure to the southeast over the near continent, and the extent to which either of these systems dominates at any particular time. The wind will probably therefore predominantly come from a northerly direction, so temperatures overall are likely to remain around or a little below average, with any warmer conditions will generally be further west - and near some eastern coasts it could feel quite cold at times. There should be a reasonable amount of dry weather around, especially in the north and west, but some rain or showers are likely at times, most-likely in the south and east at first, but with an increasing risk elsewhere towards early May.
Updated:
In this period, the chances of unsettled weather are slightly less than usual in the north and about the same as usual further south. Therefore, some spells of wetter weather are likely for all, but perhaps especially southern areas at first with the driest conditions probably further north. Temperatures will probably near or a little below average at first, but likely to recover to around or a little above average through early-mid May. Also worth noting that average temperatures themselves rise by around 1C per week at this time of year.
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