Geography of Lafayette, Louisiana
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Geography
Lafayette is located at 30°12′50″N 92°01′46″W / 30.213901°N 92.029363°W[1] and has an elevation of 36 feet (11.0 m).[2]
According to the United States Census Bureau, the city has a total area of 47.7 square miles (123.5 km²), of which, 47.6 square miles (123.3 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.19%) is water.
Lafayette is located on the West Gulf Coastal Plain. What is now Lafayette was part of the seabed during the Quaternary Period. During this time, the Mississippi River cut a 325-foot-deep (99 m) valley between what is now Lafayette and Baton Rouge. This valley was filled and is now the Atchafalaya Basin. Lafayette is located on the western rim of this valley. This land, called the southwestern Louisiana Prairie Terrace is higher in elevation, and not made of wetland like much of the surrounding areas to the south and east of Lafayette. Because of this, Lafayette does not suffer significant flooding problems.
The Vermilion River runs through the center of Lafayette. Other significant waterways in the city are Isaac Verot Coulee, Coulee Mine, Coulee des Poches and Coulee Ile des Cannes, which are natural drainage canals that lead to the Vermilion River.
Climate
Lafayette's climate is described as humid subtropical using Köppen climate classification. Lafayette is typical of areas along the Gulf of Mexico in that it has hot, humid summers a mild winters. (See table below for average temperatures for Lafayette.)
| Climate data for Lafayette Regional Airport, Louisiana (1991–2020 normals, extremes 1893–present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 87 (31) |
87 (31) |
93 (34) |
93 (34) |
98 (37) |
106 (41) |
107 (42) |
110 (43) |
103 (39) |
98 (37) |
92 (33) |
89 (32) |
110 (43) |
| Mean maximum °F (°C) | 76.4 (24.7) |
78.1 (25.6) |
82.7 (28.2) |
86.9 (30.5) |
92.0 (33.3) |
95.3 (35.2) |
96.6 (35.9) |
97.6 (36.4) |
94.9 (34.9) |
90.4 (32.4) |
83.7 (28.7) |
79.1 (26.2) |
98.3 (36.8) |
| Mean daily maximum °F (°C) | 62.2 (16.8) |
66.1 (18.9) |
72.6 (22.6) |
79.0 (26.1) |
85.9 (29.9) |
90.2 (32.3) |
91.5 (33.1) |
92.3 (33.5) |
89.0 (31.7) |
81.3 (27.4) |
71.5 (21.9) |
64.4 (18.0) |
78.8 (26.0) |
| Daily mean °F (°C) | 52.8 (11.6) |
56.8 (13.8) |
62.9 (17.2) |
69.2 (20.7) |
76.5 (24.7) |
81.6 (27.6) |
83.3 (28.5) |
83.5 (28.6) |
79.7 (26.5) |
70.7 (21.5) |
60.8 (16.0) |
54.9 (12.7) |
69.4 (20.8) |
| Mean daily minimum °F (°C) | 43.5 (6.4) |
47.4 (8.6) |
53.3 (11.8) |
59.3 (15.2) |
67.2 (19.6) |
73.1 (22.8) |
75.1 (23.9) |
74.7 (23.7) |
70.4 (21.3) |
60.1 (15.6) |
50.2 (10.1) |
45.3 (7.4) |
60.0 (15.6) |
| Mean minimum °F (°C) | 26.4 (−3.1) |
32.0 (0.0) |
35.1 (1.7) |
42.7 (5.9) |
54.3 (12.4) |
66.0 (18.9) |
70.6 (21.4) |
69.1 (20.6) |
57.9 (14.4) |
42.8 (6.0) |
33.0 (0.6) |
29.2 (−1.6) |
24.6 (−4.1) |
| Record low °F (°C) | 10 (−12) |
6 (−14) |
22 (−6) |
32 (0) |
42 (6) |
51 (11) |
59 (15) |
58 (14) |
41 (5) |
27 (−3) |
21 (−6) |
9 (−13) |
6 (−14) |
| Average precipitation inches (mm) | 5.92 (150) |
4.07 (103) |
3.72 (94) |
4.91 (125) |
5.44 (138) |
7.09 (180) |
6.27 (159) |
6.26 (159) |
5.02 (128) |
4.76 (121) |
4.39 (112) |
4.96 (126) |
62.81 (1,595) |
| Average precipitation days (≥ 0.01 in) | 10.0 | 9.3 | 8.7 | 7.5 | 8.4 | 12.2 | 14.1 | 12.2 | 9.4 | 7.6 | 8.3 | 9.8 | 117.5 |
| Source: NOAA[3][4] | |||||||||||||
References
- ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- ^ "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved August 27, 2021.
- ^ "Station: Lafayette RGNL AP, LA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved August 27, 2021.
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