Builth Wells (Powys) weather

Headline:

Dry for many with isolated showers on Thursday.

This Evening and Tonight:

The chance of an isolated shower at first, but most places staying dry this evening and overnight. Clear periods developing and turning chilly inland with perhaps a local grass frost in prone rural locations. Patchy mist or fog possible. Minimum temperature 3 °C.

Thursday:

Fog patches quickly clearing, then dry with sunny spells for many. Isolated showers developing but most places remaining dry. Sea breezes forming but feeling warmer for most than on Wednesday. Maximum temperature 16 °C.

Outlook for Friday to Sunday:

Bright on Friday but showery rain in the west later. Drier over the weekend but rain possible in the northwest on Sunday. Occasionally breezy but feeling warm in any sunshine.

Most likely starting off widely fine with sunny spells, following the clearance of early morning mist and fog. This most likely in the south, whilst in the north there's a greater chance of more cloud which may take some time to clear. There's a small chance that fine and very warm weather could extend right across the country over the following days, but it's more likely that cloud/rain in the northwest will sink southeast introducing more changeable and cooler conditions for a time mid-week. It then becomes roughly equal chances that we see a resumption of mainly fine and dry conditions versus a continuation of more changeable weather with a mixture of rain and drier interludes.

Forecast confidence is lower than average for this range, although fairly typical for late Spring. A typical mixture of drier and settled periods, and periods of wetter and more unsettled conditions, is on balance slightly more likely than predominantly unsettled or predominantly settled. Temperatures are likely to be around average overall, with a slightly increased chance of warm or hot spells. Any such spells could be accompanied by locally heavy showers and thunderstorms.