The icon is showing night because of some issue with sunrise/sunset times being reversed.
<!-- mtr_get_iconnumber begin: '13:40','Mostly Cloudy','17:36','07:41' -->
<!-- mtr_fixupTime in='17:36' tfixed='17:36' out='17:36' -->
<!-- mtr_fixupTime in='07:41' tfixed='07:41' out='07:41' -->
<!-- mtr_fixupTime in='13:40' tfixed='13:40' out='13:40' -->
<!-- mtr_get_iconnumber using: time2='13:40' as night for sunrise2='17:36',sunset2='07:41' -->
<!-- MH_RainRateIcon out='Mostly Cloudy' icon='4' rate='0' mm/hr -->
The two values come from Meteohub in the MH-defs.php lines:
$sunrise = $WX['actual_sunrise_standard_local'];
$sunset = $WX['actual_sunset_standard_local'];
and your MHtags.php?sce=dump has currently:
$WX['actual_sunrise_standard_local'] = '17:36';
$WX['actual_sunset_standard_local'] = '07:41';
I suspect you have set Meteohub longitude for +90 instead of -90 and so the times are reversed.
Best regards,
Ken