YR.no accuracy

After a discussion with a friend about how accurate yr.no was, compared to smhi.se, i set out to test it. DATA > DOGMA!

I wrote a small perl-script that scraped the temperature predictions from yr.no and every hour and saved all the values. To have something to compare to I recorded the temperature outside my appartment window as well as scraped another temperature measured about 10km away from from temperatur.nu.

Since yr.nu updates their forecasts several times a day i wanted also wanted to see if the forecasts became more and more accurate. So I created a graph that plotted the differences to the measured temperature and compared it to three forecasts, one 1 hour old, one 1 day old and one 2 days old.

Since i couldn’t be bothered to compare the data I got from yr.no to the forecasts from smhi.se the results was inconclusive 😁But the accuracy from yr.no was close enough for me to switch to it.