TRENDS for the week of 22 to 28 April 2021 --
-- Temperatures will average near normal values in the west, to 1 deg below normal in the east.
-- Rainfall will be slight, near zero for most places with just isolated showers around Monday-Tuesday.
-- Sunshine will be 25 to 50 per cent above normal values except near some parts of the south and east coasts.
-- Wind speeds will continue generally quite low.
FORECASTS
TODAY will be mostly sunny with patchy low cloud near east coast and
more extensive cloud from sea fog near the south coast. Highs 14 to 17 C
in most areas, 11 to 14 C closer to east and south coast. Light winds
but some tendency for southeasterly sea breezes to develop.
TONIGHT will be misty with clear skies above any low level fog or cloud,
and rather chilly with lows 1 to 4 C, some patchy ground frost
possible.
FRIDAY to SUNDAY will maintain a similar regime with little change day
to day, perhaps slightly more cloud on the weekend, and similar
temperatures in all regions, highs 15 to 18 C for many, 12 to 15 C
closer to coasts, and lows in the 2 to 5 C range.
By MONDAY a slight cooling trend will develop as a weak cold front
pushes south, isolated showers could develop in light northerly winds,
highs more generally 11 to 14 C after morning lows 3 to 6 C.
TUESDAY and WEDNESDAY will continue partly cloudy and cool with isolated
showers, light north to northeast breezes, and highs 11 to 15 C, lows
-1 to +3 C.
Towards the end of next week cloud will increase and rain could develop
during the first week of May as the Atlantic becomes more active in the
weather pattern, with some stronger winds developing and a return to
south-westerly winds at times.
Peter for IWO