Our objectives were to determine climatic and production factors associated with abortions in female pigs in commercial herds and to compare the reproductive performances and culling patterns between aborting and nonaborting reserviced female pigs. We analyzed 309,427 service records of female pigs entered into 100 herds located in humid subtropical or continental climate zones. Climate data were obtained from 21 weather stations located close to the studied herds. Mean daily average temperatures (Tavg) for the 21-d pre-mating period for each female pig were coordinated with that female’s reproductive data. Generalized linear models were conducted for whether or not a female pig aborting. Abortion risk per service (±SEM) was 0.7 ± 0.06%, and mean daily average temperature (range) was 15.0°C (−11.0 to 32.7°C). Risk factors associated with an increased abortion risk per service were higher parity, having more stillborn piglets, higher Tavg and reservicing (P < 0.05). Also, abortion risks in parity 1 and parity 2–5 sows linearly increased by 0.3 and 0.1%, respectively, as Tavg increased from 20 to 30°C (P < 0.05), but there were no such associations in parity 0 and or parity 6 or higher female pigs (P ≥ 0.37). Aborting reserviced female pigs had 0.4 fewer pigs born alive than nonaborting reserviced female pigs (P < 0.05). Also, 64.6% of all aborting female pigs were culled for reproductive failure, compared with only 23.4% of nonaborting females. In conclusion, producers should closely monitor female pigs at high risk of aborting and apply more advanced cooling systems.