Age-specific life table techniques were applied to field-collected data to examine the effect of favorable and unfavorable temperature conditions on life table parameters. Lower and higher temperature extremes in winter and late summer were found to delay development and shorten adult longevity as well as exhibiting a marked effect on natality and mortality schedules. As a consequence the gross reproductive rate (GRR), net reproductive rate (Ro), intrinsic rate of natural increase (r _m) and finite rate of population increase ( ) were reduced whereas the population doubling time (D) lengthened as compared with the samee demographic statistics under more favorable temperature conditions in early summer, mid-summer and fall. Values of the latter life table parameters varied among temperature regimes when times were expressed in days, but converged somewhat, when times were expressed in degree-days (DD). The proportion of immatures decreased and the proportion of adults increased with increasing temperature.