La Crosse Technology Weather Station Instruction Manual page 30

For every sudden or significant change in the air pressure, the weather icons will update accordingly to represent the
change in weather. If the icons do not change, then it means either the air pressure has not changed or the change
has been too slow for the Weather station to register. However, if the icon displayed is a sun or raining cloud, there will
be no change of icon if the weather gets any better (with sunny icon) or worse (with rainy icon) since the icons are
already at their extremes.
The icons displayed forecasts the weather in terms of getting better or worse and not necessarily sunny or rainy as
each icon indicates. For example, if the current weather is cloudy and the rainy icon is displayed, it does not mean that
the product is faulty because it is not raining. It simply means that the air pressure has dropped and the weather is
expected to get worse but not necessarily rainy.
Note:
After setting up, readings for weather forecasts should be disregarded for the next 12-24 hours. This will allow
sufficient time for the Weather station to collect air pressure data at a constant altitude and therefore result in a more
accurate forecast.
Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather forecasting feature is
estimated to have an accuracy level of about 75% due to the varying areas the Weather station has been designed for
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