After the sun sets and the temperature drops, the warm wall will continue to transfer heat to the interior for several hours due to the time-lag effect.
ˈæftɚ ðə sˈʌn sˈɛts ænd ðə tˈɛmpɹɪtʃɚ dɹˈɑːps, ðə wˈɔːɹm wˈɔːl wɪl kəntˈɪnjuː tə tɹænsfˈɜː hˈiːt tə ðɪ ɪntˈɪɹiɚ fɔːɹ sˈɛvɹəl ˈaʊɚz dˈuː tə ðə tˈaɪmlˈæɡ ɪfˈɛkt.