If you use my WeatherFast app, version 1.5.1 is now available in Apple's Test Flight.

https://testflight.apple.com/join/QwMz3Hep

***New***
Sharing: A share button will now be present on the weather details for a city. Use that to share the current conditions and a brief three-day forecast along with a link to WeatherFast in the app store.

***Updated*** (1/2)

Join the Weather Fast beta

Available on iOS

@kellylford Hey Kelly. Is the historical weather data somehow broken? After I tap on the "load" button and choosing the different date from today, I don't see any data. Great idea, BTW!
@vick21 It shouldn't be broken and was working for me earlier. But I'm looking into this.
@vick21 This is working but I think this entire feature needs some refinement. You have to tap load historical weather and then after that loads, view weather across the years on the next screen. This was actually one of the first features I added because I never found an easy way to get this information. I think it grew without as much thought into the overall experience as it could have here.
@kellylford I love that idea. I don't believe Apple Weather has this feature?
@vick21 I'll get this all sorted out. I'm a bit surprised that the Test Flight isn't working. I'm using a mixture of the free Open Mateo weather API and a subscription-based one. The weather history, oddly, is only available as far as I know in the free and originally I thoguht the token would just be ignored for the subscription version on free services. But I don't think that's the case and I corrected this all in my Test Flight version. But we'll see. Again apologies. (1/2)
I'm also working on getting more test coverage in place for my apps. (2/2)
@vick21
@vick21 If you have the chance to try historical weather again, I made some updates to improve the reliability of data retrieval or so I hope. The updated build is in Test Flight.
@kellylford It's working now. Thanks so much! What are you using for weather data source? It seems to be a closer to Google than to Apple, latter being more precise, at least in my region! :)
@vick21 I'm primarily using using Open-Meteo. I was using their free service but switched to the paid recently because it appears some of my features timeout otherwise. So I'm also researching quality options and do use Apple's WeatherKit for alerts where supported.
@kellylford @vick21 Do you think that some day, say weather fast 5.0 it might be able to give a text summary like “a line of severe storms 10 miles west of city a extending to near city b is moving east at 30 mph, and update in real time? I was imagining that when those storms went through earlier yesterday. Would be interesting to see what things you have imagined your app doing in the future.