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Brown marmorated stink bug, <i>Halyomorpha halys</i> (Stål) (Hemiptera: Pentatomidae), is a generalist pest that causes serious injury to a variety of crops around the world. After the first detection in the USA, <i>H. halys</i> became a serious threat to growers resulting in significant crop damage. Understanding the effect of temperature on <i>H. halys</i> development will help to achieve successful control by predicting the phenological timing of the pest. Here, life table parameters (survival, development, reproduction, and daily mortality) of <i>H. halys</i> were evaluated for New Jersey and Oregon populations in the US. Parameters were determined from field-collected and laboratory-reared individuals. The results indicated that New Jersey populations had higher levels of egg-laying than Oregon populations and exhibited higher and earlier fecundity peaks. Survival levels were similar between populations. Linear and nonlinear fit were used to estimate the minimum (14.3 °C), optimal (27.8 °C), and maximum (35.9 °C) temperatures where development of <i>H. halys</i> can take place. An age-specific fecundity peak (M_x = 36.63) was recorded at 936 degree days for New Jersey populations, while maximum fecundity (M_x = 11.85) occurred at 1145 degree days in Oregon. No oviposition was recorded at the lowest (15 °C) or highest (35 °C) trialed temperatures. Developmental periods increased at temperatures above 30 °C, indicating that such higher temperatures are suboptimal for <i>H. halys</i> development. Altogether the most optimal temperatures for population increase (<i>r_m</i>) ranged from 25 to 30 °C. Survival rates of <i>H. halys</i> at suboptimal low temperatures of 8 °C (i.e., 61%) is comparable to previous reports. The present paper provides additional data and context from a range of experimental conditions and populations. Such temperature-related <i>H. halys</i> life table parameters can be used to provide determine the risk to susceptible crops.