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September 2018 Weather History at South Marsh Island Louisiana, United States

This report shows the past weather for South Marsh Island, providing a weather history for September 2018. It features all historical weather data series we have available, including the South Marsh Island temperature history for September 2018. You can drill down from year to month and even day level reports by clicking on the graphs.

South Marsh Island Temperature History September 2018

History:2019JFMAMJJASepOND201720162015
Temperature history in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303070°F70°F75°F75°F80°F80°F85°F85°F90°F90°FAugOct
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Hourly Temperature in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOctwarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

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Cloud Cover in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Cloud Cover in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.
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Observed Weather in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Observed Weather in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Sat, Sep 1 Haze, MistHZ, BR
Sun, Sep 2 Haze, Fog, MistHZ, FG, BR
Mon, Sep 3 Haze, MistHZ, BR
Tue, Sep 4 HazeHZ
Wed, Sep 5 HazeHZ
Thu, Sep 6 Haze, MistHZ, BR
Mon, Sep 10 Haze, Fog, MistHZ, FG, BR
Tue, Sep 11 HazeHZ
Wed, Sep 12 Haze, Fog, MistHZ, FG, BR
Thu, Sep 13 Haze, Fog, MistHZ, FG, BR
Fri, Sep 14 HazeHZ
Fri, Sep 21 HazeHZ
Sat, Sep 22 Haze, MistHZ, BR
Mon, Sep 24 Haze, MistHZ, BR
Tue, Sep 25 HazeHZ
Wed, Sep 26 Haze, MistHZ, BR
Thu, Sep 27 Haze, MistHZ, BR
Fri, Sep 28 MistBR
Sat, Sep 29 Haze, MistHZ, BR
Sun, Sep 30 HazeHZ

Hours of Daylight and Twilight in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Hours of Daylight and Twilight in September 2018 at South Marsh Island181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 43 minSep 112 hr, 43 minSep 3011 hr, 55 minSep 3011 hr, 55 minSep 1112 hr, 26 minSep 1112 hr, 26 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

Sunrise & Sunset with Twilight in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Sunrise & Sunset with Twilight in September 2018 at South Marsh Island181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM2 AM2 AMAugOct7:46 AM7:46 AMSep 18:28 PMSep 18:28 PM8:00 AM8:00 AMSep 307:54 PMSep 307:54 PM7:51 AM7:51 AMSep 118:17 PMSep 118:17 PM7:55 AM7:55 AMSep 218:05 PMSep 218:05 PM
The solar day over the course of September 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Solar Elevation and Azimuth in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Solar Elevation and Azimuth in September 2018 at South Marsh IslandSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct00101020203030404050506000101020203030404050506060
northeastsouthwest
Solar elevation and azimuth over the course of September 2018. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Moon Rise, Set & Phases in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 267:57 AMAug 267:57 AMSep 92:02 PMSep 92:02 PMSep 2410:53 PMSep 2410:53 PM8:23 PM8:23 PM7:45 AM7:45 AM7:35 AM7:35 AM8:40 PM8:40 PM8:09 PM8:09 PM8:20 AM8:20 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Sep 2018IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
68%-1:16 PMWNW-6:34 AMS237,986 mi
2
50%12:37 AMENE2:16 PMWNW-7:25 AMS235,161 mi
3
46%1:23 AMENE3:18 PMWNW-8:19 AMS232,299 mi
4
34%2:14 AMENE4:20 PMWNW-9:16 AMS229,575 mi
5
23%3:11 AMENE5:20 PMWNW-10:16 AMS227,217 mi
6
14%4:14 AMENE6:16 PMWNW-11:16 AMS225,481 mi
7
6%5:20 AMENE7:08 PMWNW-12:16 PMS224,603 mi
8
2%6:28 AMENE7:56 PMWNW-1:14 PMS224,753 mi
9
0%7:35 AME8:40 PMW-2:09 PMS225,985 mi
10
2%8:41 AME9:20 PMW-3:02 PMS228,224 mi
11
6%9:44 AME10:00 PMW-3:53 PMS231,272 mi
12
13%10:46 AME10:38 PMW-4:42 PMS234,843 mi
13
21%11:45 AMESE11:17 PMWSW-5:32 PMS238,614 mi
14
30%12:43 PMESE11:58 PMWSW-6:21 PMS242,269 mi
15
40%1:40 PMESE--7:10 PMS245,532 mi
16
50%-12:40 AMWSW2:34 PMESE7:59 PMS248,194 mi
17
60%-1:25 AMWSW3:26 PMESE8:49 PMS250,119 mi
18
70%-2:12 AMWSW4:14 PMESE9:38 PMS251,244 mi
19
78%-3:02 AMWSW5:00 PMESE10:26 PMS251,577 mi
20
86%-3:53 AMWSW5:42 PMESE11:14 PMS251,185 mi
21
89%-4:45 AMWSW6:22 PMESE--
22
92%-5:38 AMWSW6:59 PMESE12:00 AMS250,178 mi
23
96%-6:31 AMWSW7:35 PME12:45 AMS248,690 mi
24
100%-7:26 AMW8:09 PME1:30 AMS246,862 mi
25
100%-8:20 AMW8:44 PME2:14 AMS244,827 mi
26
99%-9:16 AMW9:19 PME2:59 AMS242,694 mi
27
95%-10:13 AMW9:56 PMENE3:44 AMS240,541 mi
28
89%-11:11 AMWNW10:36 PMENE4:32 AMS238,419 mi
29
81%-12:11 PMWNW11:20 PMENE5:22 AMS236,354 mi
30
72%-1:12 PMWNW-6:15 AMS234,363 mi

Humidity Comfort Levels in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Humidity Comfort Levels in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Wind Speed in September 2018 at South Marsh Island181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphAugOct
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Hourly Wind Speed in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Hourly Wind Direction in 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in September 2018 at South Marsh Island

History:2019JFMAMJJASepOND201720162015
Atmospheric Pressure in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.8 inHg29.8 inHg29.9 inHg29.9 inHg30.0 inHg30.0 inHg30.1 inHg30.1 inHg30.2 inHg30.2 inHgAugOct
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

Reports by Month

Reports by Month at South Marsh Island194019501960197019801990200020102020201120112012201220132013201420142015201520162016201720172018201820192019202020202021202120232023
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in September 2018 at South Marsh Island Fall 2018

Number of Reports by Day in September 2018 at South Marsh Island18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030005050100100AugOct
regularspecialcorrection
The number of reports per day.

Reports by Hour in September 2018 at South Marsh Island Fall 2018

Reports by Hour in September 2018 at South Marsh Island1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
regularspecialcorrection
Indication of what types of reports were recorded during each hour.

This report graphically illustrates the historical weather reports recorded by the weather station at South Marsh Island in September 2018.

METAR Reports

Airport weather stations throughout the world routinely issue METAR weather reports . Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. They are published via radio transmission and on the internet. We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that.

ISD Reports

The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information , consists of hourly and synoptic weather reports from a variety of sources. We use ISD data to complement and backfill for our METAR archive.

Other Data

The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

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