Holding On: September 2025 Recap
“Holding On.” Perhaps you’re a bit perplexed attempting to interpret the title of this month’s report. Something with respect to temperature? Certainly, the warm season hardly relinquished its grip on the Garden State during the past month. September temperatures averaged above normal, mainly due to the second half of the month being warmer than the first half. Normally the second half averages approximately 5.0°–5.5° cooler than the first, however this year’s second half was 1.0°–1.5° milder than the first half in the north and about 2° milder in the south. Something regarding precipitation? It was the second consecutive month with below-normal statewide precipitation, with eleven of the past thirteen months having below-normal precipitation. The month ended with most of north Jersey categorized on the US Drought Monitor as being Abnormally Dry or in Moderate Drought, and October 1st found the NJ Department of Environmental Protection declaring a Drought Watch across the entire state. Despite this, the state has not slid into a significant drought situation as is currently found in New England. Water resources are holding on but certainly are more vulnerable than anyone would like.
Statewide, the September temperature averaged 68.1°. This was 1.2° above the 1991–2020 normal and ranked as the 16th warmest September since records commenced in 1895. Ten of the twenty warmest Septembers have occurred since 2010. The average high was 78.0°, which is 0.8° above normal and ranks as the 26th warmest on record. The average low was 58.2°, which is 1.6° above normal and ranks as 12th warmest. The northern climate division averaged 66.9° (+2.0°, 8th warmest), the southern division 68.8° (+0.7°, 25th warmest), and the coastal division 69.0° (+0.3°, 28th warmest).