Temperature hot below — one displaying brief weather event (13)

I believe the answer is:

thundershower

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'brief weather event' is the definition.
The definition suggests a singular noun which matches the answer.

'temperature hot below one displaying' is the wordplay.
'temperature' becomes 't' (abbreviation).
'hot' becomes 'h' (common abbreviation eg on taps).
'below' becomes 'under' (synonyms).
'one displaying' becomes 'shower' (someone displaying or showing things).
't'+'h'+'under'+'shower'='THUNDERSHOWER'

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(Another definition for thundershower that I've seen is " Short electrical disturbance with rain".)

I've seen this clue in The Times.

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