The scaling of the longitudinal velocity structure functions, Sq(r)=⟨∣δu(r)∣q⟩∼rζq, is analyzed up to order q=8 in a decaying rotating turbulence experiment from a large particle image velocimetry dataset. The exponent of the second order structure function ζ2 increases throughout the self-similar decay regime, up to the Ekman time scale. The normalized higher-order exponents ζq∕ζ2 are close to those of the intermittent nonrotating case at small times, but show a marked departure at larger times, on a time scale Ω−1 (Ω is the rotation rate), although a strictly nonintermittent linear law ζq∕ζ2=q∕2 is not reached.