FYI I've run weather and pedometer health apps same time for years. No issues.
I've a gs3, gs4, gs5, updated to android 5 and 6 versions noticed that only clock showed no weather information Iin weather widget. Infact no weather, no colour photo ot animation, just a clock left side. Kept deleting and re adding weather clock 4x2 widget, the Samsung default one. Nothing still same result.
Went to Settings /Application Manager / Change System Settings
Seems I'd somehow lost the ability to turn my "Systems Settings" On Off toggle for apps. Unified Daemon and others appeared greyed out or off and couldn't be turned back on.
I remembered that I'd gone crazy restricting tons of apps to get better battery life.
************* verified solution below ************
Solution : after fearing that " Reset to defaults" in menu would ruin my settings, trying all of the above and downloading the stock 4.4.01 apk and unifiedaemon that came with it. I was warned by installed that I'd be overwriting a newer one with older. I canceled that asap.
After 3 hours decided to hit the reset all to default in the Change System Settings under the menu key.
Goto application manager change system settings " ( from menu drop down) then when next screen appears ( hit menu key ) select "reset app preferences "
That's it enjoy accuweather,
no reboot or restart required did 4 phones.
I've got to go back in and restrict apps that I don't want to control my system. But I won't touch unifiedDaemon 100%
Whose gonna point us to the true apk for Samsung accuweather apk from Gs6, Gs7 ??? Not some cloned look alike app that requires a 3rd party widget editing and downloading app. I don't want unnecessary apps.
Only want the true original APK made for galaxy S phones by Samsung and accuweather. I've got the Gs7 phones, a how to pull from there to gs5 would be appreciated. I'll share it too.