I've had this issue since at least IOS 8.1.2 (I may have had it longer, just never really noticed or paid attention). For some reason around 6-7 PM nightly if I look at the weather it shows the current temp but it shows the day's "high temp" as just "--". If I pull weather down from the NC it does the same - for example it would say it's currently <whatever temp> today's high was forecast as "--". It's doing this on my device (8.4 jail broken), and my wife's (not jail broken) so I doubt it's the fact that I'm jail broken (both devices are 8.4 btw). I travelled this past weekend, and in the cities that I was in during the evening, the same thing with the high being displayed as just "--" (seems again to happen around the 6PM-7PM range) and stays that way until I assume the next day, since I haven't stayed up until midnight just to see if it changes. Anyhow, no clue if this is something screwy with the weather app, and/or if anyone else has experienced it? Thanks.