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Harlow weekend weather

This weekend in Harlow, England, model by model. Weekend forecasts are far enough out that the models often split - so we show you where.

Weekend

The models centre on about 20° across the weekend. Agreement is medium - plausible, but worth re-checking closer to the day. Rain chance reaches 51% on at least one model.

Today

2026-09-19 — every model, side by side
Met OfficeUKMO model
22°
Drizzle
High 22°·Low 16°·Rain
EuropeanECMWF
21°
Cloudy
High 21°·Low 16°·Rain 51%
AmericanNOAA GFS
21°
Light drizzle
High 21°·Low 15°·Rain 18%

All 3 models land within under a degree of each other for this day — that is a forecast you can plan on.

Tomorrow

2026-09-20 — every model, side by side
Met OfficeUKMO model
19°
Cloudy
High 19°·Low 12°·Rain
EuropeanECMWF
18°
Cloudy
High 18°·Low 11°·Rain 16%
AmericanNOAA GFS
19°
Light drizzle
High 19°·Low 12°·Rain 20%

All 3 models land within under a degree of each other for this day — that is a forecast you can plan on.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Todaymodels agree21° to 22°±33%18% to 51% chance
Tomorrowmodels agree18° to 19°±4%16% to 20% chance
Mon±3°20° to 22°models agree0% to 0% chance
Tue±2°22° to 25°models agree0% to 0% chance
Wed±5°19° to 24°±3%6% to 9% 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.

Common questions

Will it rain this weekend?
At least one model puts the weekend rain chance as high as 51%. Weekend forecasts sit far enough ahead that models frequently disagree on showers - when they do, no single app can honestly tell you it will or will not rain.
How reliable is a weekend forecast?
It depends how far away the weekend is. Forecast error grows steadily with lead time, so a Saturday forecast made on Friday is far stronger than one made the previous Monday. The honest signal is model agreement: when they converge the forecast is solid, and when they spread the weekend is genuinely uncertain.

More for Harlow