user8986: I was kind of surprised to see that in one of _ID question someone provided weather conditions that occurred during the moment when picture in question was taken.
Why do we need to provide such data? If weather conditions would be completely different, would that impact identification process in any way?

user27148: There is a very helpful tag page for species identification questions:
https://biology.stackexchange.com/tags/species-identification/info
There is no requirement there for detailed weather information.
There is a note to include:

Additional useful info (e.g., behavior, time of day/year, etc...)

as a catch-all category that could potentially include weather, but in most cases specific weather information is probably not necessary. However, the behavior of some organisms (especially whether they are likely to be encountered by people..) is weather-dependent, and weather could help identification in those cases. That said, I see no need to include weather information regularly, the vast majority of species ID questions have no such information.

8986: <p>I was kind of surprised to see that in one of <a href="https://biology.stackexchange.com/q/38986/8986">_ID question</a> someone provided weather conditions that occurred during the moment when picture in question was taken.</p>

<p>Why do we need to provide such data? If weather conditions would be completely different, would that impact identification process in any way?</p>
 27148: <p>There is a very helpful tag page for species identification questions:</p>

<p><a href="https://biology.stackexchange.com/tags/species-identification/info">https://biology.stackexchange.com/tags/species-identification/info</a></p>

<p>There is no requirement there for detailed weather information.</p>

<p>There is a note to include:</p>

<blockquote>
  <p>Additional useful info (e.g., behavior, time of day/year, etc...)</p>
</blockquote>

<p>as a catch-all category that could potentially include weather, but in most cases <em>specific</em> weather information is probably not necessary. However, the behavior of some organisms (especially whether they are likely to be encountered by people..) is weather-dependent, and weather <em>could</em> help identification in those cases. That said, I see no need to include weather information regularly, the vast majority of species ID questions have no such information.</p>
