Is it good practice to try to recall things when we are tired?
You might not be looking for an answer about sleep deprivation per se—you might just be interested in normal daily fatigue immediately before normal sleep—but of course sleep deprivation results in tiredness, so the answer seems likely to be equivalent (though I'm not a sleep researcher by specialty). Here's an answer for sleep deprivation and memory (Alhola &amp; Polo-Kantola, 2007):


  Total [sleep deprivation] impairs attention and working memory, but it also affects other functions, such as long-term memory and decision-making.


And another equivalent answer (Chee, Chuah, Venkatraman, Chan, Philip, &amp; Dinges, 2006):


  Performance accuracy declined significantly during the performance of...working memory tasks following [sleep deprivation].


Reference

Alhola, P., &amp; Polo-Kantola, P. (2007). Sleep deprivation: Impact on cognitive performance. Neuropsychiatric Disease and Treatment, 3(5), 553–567. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/pmc2656292/.

Chee, M. W., Chuah, L. Y., Venkatraman, V., Chan, W. Y., Philip, P., &amp; Dinges, D. F. (2006). Functional imaging of working memory following normal sleep and after 24 and 35 h of sleep deprivation: Correlations of fronto-parietal activation with performance. Neuroimage, 31(1), 419–428. Retrieved from http://www.med.upenn.edu/uep/user_documents/Cheeetal--Functionalimagingofworkingmemory--NeuroImage2006.pdf.