Cloudy,rain likely tomorrow
Met Office, the European and the American model put Penzance's high today between 19° and 22°, a 3° split. Tomorrow looks rain around 19°, with a 76% chance of rain.
Penzance is a small town of about 20,000 people in England, sitting at 50.1°N in a temperate climate zone. Met Office, European, American each forecast Penzance with their own physics, so we line all three up and flag where they disagree. Nearby towns include St Ives, Hayle, Helston.
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.
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1880 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.
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.