Weather Radar UK β€Ί Long-range forecast β€Ί Derry

30-day forecast Β· Derry

Next 30 days, day by day

scroll sideways Β· tap a day for details

30-day temperature & rainfall

Derry Β· days 1-14 from weather models Β· days 15-30 typical range (1991-2020)

πŸ—ΊοΈ 14-day forecast map

Derry & nearby cities β€” press play
Real forecast data for every city shown, from the same weather models as the city pages, updated several times a day. Icons show each day’s overall weather; the figure is the daytime maximum.

Next 14 days at a glance

From the model forecast
Warmest day
15Β°
Fri 30 Oct
Coldest night
4Β°
Tue 3 Nov
Days with rain
5 / 14
of 14 forecast days
Best day out
Mon 2 Nov
mild, dry & light wind

The next 4 weekends

For planning ahead
31 Oct – 1 Nov
12Β° 4Β°
76% rain risk
Sat 7 – Sun 8 Nov
11Β° 6Β°
79% rain risk
Sat 14 – Sun 15 Nov
13Β° 5Β°
typical range
Sat 21 – Sun 22 Nov
12Β° 5Β°
typical range

30 days β€” Derry

14 real + 16 synthesised

How does the long-range forecast work?

Days 1-14 are a real forecast from weather models. Days 15-30 are season-typical values based on 1991-2020 climate averages β€” good for planning, NOT an exact forecast that far ahead.

Days 1-14: Fetched live from weather models (UKV, ECMWF, GFS) with statistical correction. Reliability ~85% for days 1-3, ~60% for days 7-10, ~45% for days 11-14.

Days 15-30: A real forecast does not exist that far ahead (a chaotic system). Instead we show season-typical values: the month’s average max/min from 1991-2020 climate data (London baseline with latitude correction for Derry), with mild weekly variation.

Use: "Roughly how warm is it usually in London in the last week of July?" β€” a good question for days 15-30. "Will it rain on 27 May?" β€” no serious forecast can say.

Other cities Β· 30 days

London 30-day forecast β†’ Dublin 30-day forecast β†’ Birmingham 30-day forecast β†’ Leeds 30-day forecast β†’ Glasgow 30-day forecast β†’ Sheffield 30-day forecast β†’ Manchester 30-day forecast β†’ Edinburgh 30-day forecast β†’ Liverpool 30-day forecast β†’ Bristol 30-day forecast β†’ Cardiff 30-day forecast β†’ Leicester 30-day forecast β†’ Bradford 30-day forecast β†’ Belfast 30-day forecast β†’ Coventry 30-day forecast β†’ Nottingham 30-day forecast β†’ Newcastle upon Tyne 30-day forecast β†’ Brighton 30-day forecast β†’ Hull 30-day forecast β†’ Plymouth 30-day forecast β†’
Forecasts from the UK Met Office UKV model, global weather models and official UK environmental data Β· Met Office UKV model Β· Environment Agency Β· Copernicus CAMS Β· NOAA
Updated: 03:21