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Forecast confidence: High · models disagree by 1°C

Portadown weather

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Light drizzle,much the same tomorrow

Met Office, the European and the American model agree on a high near 16° in Portadown today. Tomorrow looks cloudy around 16°, with a 4% chance of rain.

16°11°
16°10°
21°13°
19°14°
15°11°
17°10°
Todaymodels agreeTomorrowmodels agreeMondaysplit ±4°Tuesdaymodels agreeWednesdaymodels agreeThursdaysplit ±5°
Met OfficeUKMO model
17°
Light drizzle
Today 17°·Low 12°·Rain -
EuropeanECMWF
16°
Light drizzle
Today 16°·Low 13°·Rain 59%
AmericanNOAA GFS
16°
Light drizzle
Today 16°·Low 10°·Rain 86%
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Portadown weather warnings

Met Office yellow, amber and red warnings for Northern Ireland

Checking the Met Office for warnings in force for Northern Ireland…

Portadown weather in numbers

measured normals and 10 years of recorded weather

Portadown swings 16°C across the year, from 19°C highs in June to 3°C lows in January, and July is usually the wettest month in a year that brings about 1101 mm of precipitation. Over 10 years of recorded weather it averages 2 days a year at 25°C or above, 17 frost nights, and rain on 177 days.

Warmest month
June
19°C average high
Coldest month
January
3°C average low
Wettest month
July
1101 mm a year
Comfortable
4 months
May, June, August and September
Residents
33,000
share this forecast
Most accurate here
European
83/100 CheckWeather Score
Warm days
2 days
a year at 25°C or above
Frost nights
17 nights
a year below 0°C
Rain days
177 days
a year with 1 mm or more

Day counts are from the ERA5 reanalysis for Portadown’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

Met Office, European, American side by side around Portadown and nearby towns.Live rain radar →
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Portadown hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Portadown 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Light drizzle
16° 11°
models agree
Tomorrow
Cloudy
16° 10°
models agree
Mon
Light drizzle
21° 13°
±4°
Tue
Light rain
19° 14°
models agree
Wed
Rain
15° 11°
models agree
Thu
Light drizzle
17° 10°
±5°
Fri
Drizzle
17° 11°
±3°
Sat
Cloudy
14°
models agree
Sun
Light drizzle
17°
models agree
Mon
Drizzle
17° 11°
models agree
Tue
Cloudy
15° 10°
models agree
Wed
Heavy drizzle
18° 12°
±4°
Thu
Heavy drizzle
17° 10°
models agree
Fri
Light rain
15°
models agree

Portadown, Northern Ireland is at its warmest in Jun (average highs near 19°C) and coldest in Jan (lows around 3°C), with roughly 1101 mm of precipitation across the year. Below, compare what Met Office, European, American forecast for Portadown right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United Kingdom before you trust any single number.

Portadown climate by month

average daytime high and overnight low across a typical year
Jan
Feb
10°
Mar
10°
Apr
12°
May
17°
Jun
19°
11°
Jul
18°
11°
Aug
19°
12°
Sep
17°
10°
Oct
14°
Nov
10°
Dec

Which forecast is most accurate in Portadown?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
83
/100rank #1
91±0.5°C96±1.2 mph6581% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
Met Office logo
Met Office
81
/100rank #2
89±0.6°C89±3.5 mph6581% hitMet Office (United Kingdom)Exeter, United Kingdom
American logo
American
77
/100rank #3
87±0.7°C95±1.6 mph5374% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1887 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United Kingdom? Give each 1 to 5 stars.

Met OfficeUKMO model
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EuropeanECMWF
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AmericanNOAA GFS
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°16° to 17°±27%59% to 86% chance
Tomorrow±1°16° to 17°±1%3% to 4% chance
Mon±4°19° to 23°±44%11% to 55% chance
Tue±2°18° to 20°±4%48% to 52% chance
Wedmodels agree15° to 16°±26%26% to 52% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Portadown

today, local time
Sunrise
07:05
Sunset
19:32
Daylight
12h 27m

Common questions

What's the weather in Portadown today?
On this page we show what Met Office, European, American each forecast for Portadown today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Portadown today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Met Office, European, American for Portadown and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Portadown?
Over the last 30 days, the European model has been the most accurate for Portadown (CheckWeather Score 83/100), ahead of the Met Office at 81. We grade every model against the recorded weather. See the UK accuracy scoreboard for the full method.
What is the warmest month in Portadown?
June is typically the warmest month in Portadown, with average highs around 19°C.
How cold does Portadown get?
The coldest month in Portadown is January, when overnight lows average about 3°C.
How much rain does Portadown get?
Portadown sees roughly 1101 mm of precipitation a year, with July usually the wettest month.

Nearby

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