It should be easy...but I know last weekend our club tried to move the game to the opponents ground on the following day, but this was squashed due to lack of referee availability, apparently.
Interesting I googled this wet bulb thing, apparently it has known flaws and is not overly accurate (a system that was developed for military training in the US in the 1950s)
Publication with the flaws noted
https://pubmed.ncbi.nlm.nih.gov/17765661/