Ensemble forecast for York

This uses data from the Global Ensemble Forecast System (GEFS). The GEFS is a version of the GFS model which is run 30 times with different starting conditions to account for uncertainty.

Tight clustering of the runs suggests a higher degree of confidence. A wide spread indicates a range of possible weather outcomes.

850hPa temperatures (°C), rainfall (mm) and snow row

850hPa temperatures, precipitation and the snow row

The upper plot shows forecast 850hPa temperatures which are approximately 1500m above sea level. They provide a way of checking how cold or warm the air mass is and aren't subject to diurnal (day to night) variation.

The lower plot shows forecast precipitation. The snow row displays the number of GEFS runs forecasting snow. This ranges from 0 to 33.

2m temperatures (°C)

2m temperature chart

These are the temperatures we experience. The purple lines show the average maximum and minimum.


Mean Surface Level Pressure chart

Mean Surface Level Pressure.

Mean wind speed (mph)

Mean wind speed chart

These are average wind speeds

Gust wind speed (mph)

Gust wind speed chart

Surface wind gust speeds. (10 day)

Snow depth (cm)

Snow depth chart

Snow depth

UK locations

If your location isn't listed pick the nearest one. Ensemble forecasts are run at a lower resolution so the data covers a bigger geographical area.

Overseas locations


Uses GEFS data with updates at 07:15 GMT, 13:15 GMT, 19:15 GMT, 01:15 GMT

Runs out to 16 days ahead



Short range
Short to medium range
Medium to long range

See the Model inventory for the full list of model charts and data