Above average temperatures can negatively impact crop yields and introduce new pests and pathogens. Temperatures have remained above average annually and especially during the winter and spring season across the northeast. Since the 1980s, the number of heat waves was moderately high. Climate models simulate an increase in the average temperature as well as temperature extremes by the end of the century. Additionally, the number of days exceeding 95°F is projected to increase.
Kunkel, K.E, L.E. Stevens, S.E. Stevens, L. Sun, E. Janssen, D. Wuebbles, J. Rennells, A. DeGaetano, J. G. Dobson, 2013: Regional Climate Trends and Scenarios for the U.S. National Climate Assessment. Part 1. Climate of the Northeast U.S., NOAA Technical Report NESDIS 142-1, 78 pp.,Hayhoe, K., Wake, C., Anderson, B., Liang, X.-Z., Maurer, E., Zhu, J., … Wuebbles, D. (2007). Regional climate change projections for the Northeast USA. Mitigation and Adaptation Strategies for Global Change, 13(5-6), 425–436. doi:10.1007/s11027-007-9133-2
,Hayhoe, K., Wake, C. P., Huntington, T. G., Luo, L., Schwartz, M. D., Sheffield, J., ... & Troy, T. J. (2007). Past and future changes in climate and hydrological indicators in the US Northeast. Climate Dynamics, 28(4), 381-407.