Chalmette climate

Chalmette Weather in September

NOAA 1991-2020 normals for Chalmette, 2.1 km from Chalmette

Average highs run from 90°F on September 1 to 86°F on September 30, and lows from 75°F to 69°F. Normal precipitation for the month is 5.19 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Chalmette, in °F, with the record for each date.60708090100110151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
88°F
Average low
73°F
Precipitation
5.19 in
Record high
101°FSep 4, 2000
Record low
61°FSep 22, 1995
Chance of a freeze
0%
Days of 90°F or more
20.3
Daylight
12 h 45 min to 11 h 53 min
Cloud cover
47%
Humidity
78%
Dew point
72°F
Wind
8.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 190°F75°F98°F 200072°F 19980%
Sep 290°F75°F99°F 200075°F 19990%
Sep 390°F75°F95°F 202472°F 19920%
Sep 490°F75°F101°F 200075°F 19940%
Sep 590°F75°F97°F 200069°F 20110%
Sep 690°F75°F96°F 199967°F 20110%
Sep 790°F74°F99°F 202367°F 20110%
Sep 890°F74°F94°F 201269°F 20110%
Sep 989°F74°F94°F 199471°F 20110%
Sep 1089°F74°F93°F 200269°F 20110%
Sep 1189°F74°F94°F 202369°F 20170%
Sep 1289°F73°F95°F 201969°F 20170%
Sep 1389°F73°F95°F 201966°F 20150%
Sep 1489°F73°F94°F 199568°F 20150%
Sep 1589°F73°F95°F 199570°F 20110%
Sep 1688°F73°F95°F 199567°F 20110%
Sep 1788°F72°F94°F 199169°F 20080%
Sep 1888°F72°F95°F 201871°F 20000%
Sep 1988°F72°F95°F 201869°F 19910%
Sep 2088°F72°F95°F 199564°F 19910%
Sep 2188°F71°F96°F 199764°F 19910%
Sep 2288°F71°F96°F 199761°F 19950%
Sep 2387°F71°F95°F 200062°F 19950%
Sep 2487°F71°F93°F 199364°F 19990%
Sep 2587°F71°F92°F 199365°F 20000%
Sep 2687°F70°F92°F 199362°F 20000%
Sep 2787°F70°F92°F 201962°F 19910%
Sep 2886°F70°F91°F 200962°F 19910%
Sep 2986°F70°F94°F 199462°F 19960%
Sep 3086°F69°F91°F 199464°F 20030%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chalmette, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:37 AM, sunset 7:22 PM
September 30
sunrise 6:53 AM, sunset 6:46 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00166130 (Chalmette), public domain. Records: NOAA GHCN-Daily, station USW00053917, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.