How to Read the 10-Day Meteogram
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What it is
The 10-Day Meteogram shows an extended weather forecast for the next two weeks. It combines:
• Daily weather symbols
• Ranges for maximum, average, and minimum temperatures
• Daily precipitation amounts and probability
The forecast is based on multiple weather model runs (an “ensemble”) to give a range of possible developments.
Weather Symbols
• Chosen based on the most likely daily scenario.
• In cases of low convergence (models disagree), the symbol may not perfectly match the precipitation data — this is normal.Temperature Diagram
• Shows expected maximum and minimum temperatures for each day (local time).
• The thick middle line = most probable temperature.
• The upper and lower lines = most extreme possible values from different model runs.Precipitation Diagram
• Bars (relative to left Y-axis) = daily precipitation amount.
• Black lines = possible range between minimum and maximum amounts.
• Probability of precipitation (0–100%) is shown below the diagram:
o Light blue: 90%
o Purple: >95%
Note: Probability and pictogram may differ for single events, but they match statistically over many cases.How to Interpret the 10-Day Forecast
The 14-day view is most useful for spotting risks of extreme events well in advance, such as frost, heatwaves, or heavy precipitation.
Tips:
• Convergence (agreement between models) matters:
o High convergence = event more likely
o Low convergence = event still uncertain
• Consistency across weather variables makes an event more probable:
o If temperature drop, wind increase, cloud cover, and precipitation all point to the same thing — likely severe weather.
o If only one or two variables change — event may be weak or not happen at all.
• Check the forecast daily during critical periods to track changes in convergence and probability.Commercial use
For business or operational planning, see the meteoblue B2B pages.
