ZeroIntr: Avalent verbs, characterized by being able to form a nonelliptical, grammatical clause without a single argument, exist as a subclass of intransitive verbs.
(1) jowint-əɣ.
become-night-pst.3sg
’It grew dark.’ (Pesikova–Pokačeva 2006: 12.)
(2) nēwint-əɣ.
become-light-pst.3sg
’The sun came up.’ (Pesikova–Pokačeva 2006: 13.)
(3) ʌoŋtəqs-əɣ.
start the summer-pst.3sg
’The summer has started.’ (Pesikova–Pokačeva 2006: 15.)
(4) jom-əʌ.
rain-prs.3sg
’It is raining.’ (L. N. K.)
In Surgut Khanty, there are verbs connected to weather phenomena that do not require any arguments.