A weather station provides accurate and essential data on the ultra-local weather context.
This is very important in beekeeping, as bees and the flowers they forage on are directly dependent on the climate. Without this context, the beekeeper cannot correctly interpret variations in bee activity.
Consider just a few examples:
Bees forage little or not at all below 14°C (57°F), or in strong winds, or when it is raining. This can be very disorienting. One cool, rainy period in May or June can lead to stress on hive food stocks just when, in theory, the beekeeper was expecting honey production.
The weather context not only impacts the bees, but also flowers: it reduces the amount of nectar they secrete. Indeed, some honeydews stop abruptly during the first rain. (The best-known example is the acacia honeydew), and so knowing whether it has actually rained or not in the vicinity of the apiary makes it possible to extend or shorten the presence of the hives on site.
Finally, correlated with other data such as hive weight and internal temperature, measurements provided by the weather station provide significant insight into how bees behave in relation to their direct environment. In a biomonitoring context, the usefulness is to be able to react to adapt the environment so that it’s as favorable as possible to bees’ development—and thus to that of all pollinating species.