美国本土48州10月平均气温58.7华氏度 为132年来第四暖10月 夜间低温连续四个月刷新纪录
华盛顿—美国国家海洋和大气管理局（NOAA）下属国家环境信息中心（NCEI）11月9日发布2026年10月美国气温与降水监测：美国本土48州10月平均气温为58.7华氏度，高出20世纪平均值4.6华氏度，在132年记录中列第四暖的10月；这也是美国本土连续第21个月平均气温高于20世纪平均值。
夜间低温是本月最突出的一项。10月本土48州夜间最低气温平均46.3华氏度，高出20世纪平均值4.9华氏度，以0.1华氏度之差打破1947年创下的10月旧纪录；自2026年7月以来，本土夜间最低气温已连续四个月刷新当月历史纪录。10月间，全部48个州的平均气温都高于各自的20世纪基准，从 Oregon 州到 North Carolina 州、从 Texas 州到 Minnesota 州共有30个州气温明显偏高。
降水方面，本土48州10月平均降水2.35英寸，比20世纪平均值多0.19英寸。西南气候区平均降水2.68英寸，达到常年10月平均的233%，并列该区第四湿的10月；Utah、Colorado、Arizona 与 Nevada 四州都进入各自最湿10月前十。夏威夷州10月降水8.65英寸，今年1至10月累计降水达95.31英寸，高出1991至2020年平均46.23英寸，创下同期最湿纪录。
干旱则明显缓解。据美国干旱监测图，本土48州处于干旱的面积占比由9月29日的59%降至11月3日的44%，为今年1月以来最低。NCEI 同时回顾，飓风 Isaias 在10月以二级飓风强度于 Florida 州 Destin 附近登陆，是卫星时代以来大西洋盆地生成最晚的当年首个飓风，给东南部带来强风与强降雨。
NCEI 表示，更完整的《2026年10月美国气候报告》定于11月13日发布。11月展望显示，本土48州与 Alaska 大部气温偏高概率较大，西部、平原、南部与东南部降水偏多概率较大。
（来源：美国国家海洋和大气管理局）
Contiguous U.S. Averages 58.7°F in October, Fourth-Warmest in 132 Years, as Nighttime Lows Set Records for a Fourth Straight Month
WASHINGTON — The contiguous United States recorded its fourth-warmest October in the 132-year record, with an average temperature of 58.7°F, 4.6°F above the 20th-century average, the National Centers for Environmental Information (NCEI), part of the National Oceanic and Atmospheric Administration (NOAA), reported on November 9. October was the 21st consecutive month with contiguous U.S. temperatures above the 20th-century average.
Nighttime warmth stood out. The average nighttime minimum temperature across the Lower 48 was 46.3°F, 4.9°F above the 20th-century average, surpassing the previous October record set in 1947 by 0.1°F. October was the fourth consecutive month, from July through October 2026, in which the national average nighttime minimum set a new monthly record. All 48 states recorded average temperatures above their 20th-century baselines, and 30 states, extending from Oregon to North Carolina and Texas to Minnesota, experienced much-above-average October temperatures.
Precipitation averaged 2.35 inches across the contiguous United States, 0.19 inch above the 20th-century average. The Southwest climate region averaged 2.68 inches, 233% of its average October total, tying its fourth-wettest October. Utah, Colorado, Arizona and Nevada each ranked among their 10 wettest Octobers on record. Hawaiʻi received 8.65 inches in October, and its year-to-date precipitation through October reached 95.31 inches, 46.23 inches above the 1991-2020 average, marking the wettest January-October on record for the state.
Drought eased markedly. According to the U.S. Drought Monitor, about 44% of the contiguous United States was in drought on November 3, down from 59% on September 29 and the lowest coverage since January. NCEI also noted that Hurricane Isaias, the latest first hurricane to form in the Atlantic basin during the satellite era, made landfall near Destin, Florida, as a Category 2 hurricane, bringing strong winds and heavy rainfall across the Southeast.
NCEI said its comprehensive October 2026 U.S. Climate Report is scheduled for release on November 13. The November outlook favors above-average temperatures across much of the contiguous United States and Alaska, and above-average precipitation across much of the West, Plains, South and Southeast.
(Source: National Oceanic and Atmospheric Administration)
来源：美国国家海洋和大气管理局
发布：GSM·美国（发布链接）
图片来源：图：美国国家环境信息中心发布的2026年10月全美气温百分位图（美国国家海洋和大气管理局 NOAA，公共领域）。 / Photo: October 2026 U.S. mean temperature percentiles map published by NCEI (NOAA, public domain).
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