wttr.in is translated in NUMBER_OF_LANGUAGES languages:

    SUPPORTED_LANGUAGES

Translated/improved/corrected by:

    * Afrikaans:            Casper Labuschage @casperl (on github)
    * Armenian:             Aram Bayadyan @aramix, Mikayel Ghazaryan @mkdotam,
                            Grigor Khachatryan @grigortw
    * Azerbaijani:          Dmytro Nikitiuk, Elsevar Abbasov,
                            Eldar Velibekov (@welibekov on github)
    * Belarusian:           Igor Chubin, Anton Zhavoronkov @edogby (on github)
    * Bosnian:              Ismar Kunc @ismarkunc
    * Bulgarian:            Vladimir Vitkov @zeridon (on github)
    * Brazilian-PT:         Tupã Negreiros @TupaNegreiros (on github)
    * Catalan:              Angel Jarabo @legna29A
    * Chinese(Traditional): Jeff Huang
    * Chinese(Simplified):  YouthLin Chen(@YouthLin on github), Junhan (@junhan-z on github),
                            Felix Wong (@gnowxilef on github)
    * Croatian:             Siniša Kusić @ku5ic
    * Czech:                Juraj Kakody
    * Danish:               Kim Schulz @kimusan (on github)
    * Dutch:                Youri Claes
    * Esperanto:            Igor Chubin
    * Estonian:             Jaan Jänesmäe @janesmae (on github)
    * Finnish:              @Maxifi
    * French:               Igor Chubin, @daftaupe, @iago-lito
    * Frisian:              Anne Douwe Bouma @anned20 (on github)
    * German:               Igor Chubin, @MAGICC (https://kthx.at)
    * Greek:                Panayotis Vryonis and @Petewg (on github)
    * Hebrew:               E.R.
    * Hungarian:            Mark Petruska
    * Icelandic:            Óli G. @dvergur, Skúli Arnlaugsson @Arnlaugsson
    * Indonesian:           Andria Arisal @andria009
    * Interlingua:          Dustin Redmond @dustinkredmond (on github)
    * Italian:              Diego Maniacco
    * Japanese:             @ryunix
    * Kazakh:               Akku Tutkusheva, Oleg Tropinin
    * Korean:               Jeremy Bae @opt9, Jung Winter @res_tin
    * Latvian:              Gunārs Danovskis
    * Macedonian:           Matej Plavevski @MatejMecka
    * Norwegian:            Fredrik Fjeld @fredrikfjeld
    * Nynorsk:              Kevin Brubeck Unhammer (https://unhammer.org/k/)
    * Persian:              Javad @threadripper_
    * Polish:               Wojtek Łukasiewicz @wojtuch (on github)
    * Portuguese:           Fernando Bitti Loureiro @fbitti (on github)
    * Romanian:             Gabriel Moruz
    * Russian:              Igor Chubin
    * Serbian:              Milan Stevanović @FathVader
    * Slovak:               Juraj Kakody
    * Slovenian:            B.S.
    * Spanish:              Fernando Bitti Loureiro @fbitti (on github)
    * Swedish:              John Eriksson
    * Swahili:              Joel Mukuthu
    * Turkish:              Atabey Kaygun, Yilmaz @edigu, Volkan Tokmak(@volkanto)
    * Thai:                 Vatunyoo Suwannapisit @kerlos
    * Ukrainian:            Igor Chubin, Serhiy @pavse
    * Uzbek:                Shukhrat Mukimov
    * Vietnamese:           Lưu Vĩnh Phúc @phuclv90 (on github)
    * Welsh:                Daniel Thomas

and many many others.

In the not likely case wttr.in is not yet translated in your language
you can help with the translation.
Please start with one of the following steps:

    * Open a GitHub issue: github.com/chubin/wttr.in
    * Write an email to igor@chub.in
    * Write PM or tweet to igor_chubin