Hurricanes and Tornadoes That Hit Gramercy, LA

The nearest NOAA station with 1991–2020 climate normals is Reserve, LA, 7 miles east of Gramercy at 15 feet. July and August are the warmest, with an average high of 92°F and low of 75°F; January is the coolest, at 62°F and 43°F. June is the wettest at 8.6 inches of precipitation on average and October the driest at 4.1 inches; the year adds up to 67.2 inches over 80 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (35.6 of 67.2 inches); the other six months are drier. September has brought the most of the 71 tropical systems that passed within 75 miles (29); a normal September there has highs of 88°F and 5.8 inches of precipitation. Highs reach 90°F on about 79 days a year, almost all from May to October. Lows fall below freezing on about 13 nights a year. That 67.2 inches is more than at 78 of the 81 Louisiana stations used on this site (96%). Sorrento, 13 miles northwest, has its own station (Donaldsonville 4 SW, LA): 63.5 inches a year, 3.7 less than here, and a July average high of 91°F against 92°F.

Water temperature at the NOAA tide station West Bank 1, Bayou Gauche, LA, 24 miles southeast, averaged 88°F in July and August and 56°F in January over 2021–2025. It averaged 80°F or warmer from May to September. Sea level at the New Canal tide gauge, 35 miles from Gramercy, has risen 2.36 ± 0.19 inches per decade from 1982 to 2025, NOAA's linear trend; at that pace it is 23.6 inches in a hundred years. That is faster than at 131 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 57 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Gramercy: 44 thunderstorm wind reports, 8 flash floods, 3 heavy rain events, 1 flood and 1 lightning strike. None is recorded as killing or injuring anyone; the NWS estimated $29.4 million in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on March 26, 2009. Of the 239 Louisiana cities on this site with a flash flood on record, 47 have had fewer than Gramercy.

Flood insurance policyholders in Gramercy's ZIP code 70052 have filed 75 claims with the National Flood Insurance Program since 1978, and were paid $1.9 million for buildings and contents, in the dollars of each year. The most came from Hurricane Isaac in 2012: 11 claims (15% of all) and $355,000, then Hurricane Ida in 2021 with 10. The year with the most claims was 2014, with 26. 53% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 219 Louisiana cities on this site with 10 or more claims, 55 have fewer than Gramercy.