La Crosse Technology Family Weather Station Instruction Manual page 31

If the icons do not change, then it means either the air pressure has not changed or
the change has been too small for the Weather station to register. So you may adjust
the "sensitivity" of the pressure change checking in the setting mode –see WEATHER
TENDENCY THRESHOLD VALUE SETTING above.
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 use. In areas that
experience sudden changes in weather (for example from sunny to rain), the Weather
Station will be more accurate compared to use in areas where the weather is stagnant
most of the time (for example mostly sunny).
If the Weather station is moved to another location significantly higher or lower than
its initial standing point (for example from the ground floor to the upper floors of a
house), discard the weather forecast for the next 12-24 hours, as the Weather Station
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