I think this is perfectly fine and no issue. It just seems odd at a first glance, maybe because it's a special case where you have more information about the real value, than in any other possible case: In contrast to e.g. 0.1°C, where you know, it is a value between 0.05 and 0,149999, which is an interval of 0.1°C, with 0.0°C you know it is between 0.0 and 0.049999, with -0.0°C you know it's between -0.049999 and -0.000001, which is an 0.05°C interval each.
Especially for weather observation I'd say the negative sign in front of the rounded zero is crucial, since the impact on the aggregate state of water is essential, which furthermore has observable effects on weather conditions. (Yes, I know about the limitations of this claim in real life) Tomasz Lewicki schrieb am Samstag, 8. November 2025 um 10:26:26 UTC+1: > I first asked the developers of the neowx-material skin, which I use to > display data from my station, but I will repeat the question here, as it > seems to be an internal Weewx issue. > > Sometimes I see a reading like the one in the screenshot below > (non-graphic version: -0.0*C - minus zero point zero degree of Celsius). Of > course, I guess this is due to the rounding of a value that is not visible. > The question is, does this happen at the Weewx level (in which case I will > ask on the weewx-user group), or can it be "fixed" in neowx-material? > > Since images cannot be attached to posts on the group, here is a link to a > screenshot: https://imgur.com/a/r7KxBqN > > The answer was: "It is read by getVar, it looks for example like this > $getVar(current.outTemp) or another variables like that. So I believe it is > caused by weewx. And I agree that it is done by rounding some value, maybe > it is like -0,01 or like that. In neowx-material it is done similar way as > in for example official Seasons/current.inc" ( > https://github.com/seehase/neowx-material/issues/198#issuecomment-3504803216 > ) > > And what do you think about that? -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/9695760a-cd24-42d1-9442-f3e8c7b3ca1an%40googlegroups.com.
