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September 2017 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 2017. It features all historical weather data series we have available, including the South Marsh Island temperature history for September 2017. You can drill down from year to month and even day level reports by clicking on the graphs.

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Cloud Cover in September 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Cloud Cover in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Observed Weather in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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
Fri, Sep 8 Haze, MistHZ, BR
Sat, Sep 9 Haze, MistHZ, BR
Sun, Sep 10 Haze, MistHZ, BR
Mon, Sep 11 MistBR
Tue, Sep 12 Haze, MistHZ, BR
Thu, Sep 14 MistBR
Fri, Sep 15 Haze, MistHZ, BR
Sat, Sep 16 Haze, MistHZ, BR
Sun, Sep 17 Haze, MistHZ, BR
Tue, Sep 19 Haze, MistHZ, BR
Wed, Sep 20 MistBR
Thu, Sep 21 Haze, MistHZ, BR
Fri, Sep 22 Haze, MistHZ, BR
Sat, Sep 23 Haze, MistHZ, BR
Sun, Sep 24 Haze, MistHZ, BR
Mon, Sep 25 Haze, MistHZ, BR
Tue, Sep 26 Haze, MistHZ, BR
Wed, Sep 27 Haze, MistHZ, BR
Thu, Sep 28 Haze, MistHZ, BR
Fri, Sep 29 Haze, Freezing Fog, MistHZ, FZFG, BR
Sat, Sep 30 Haze, MistHZ, BR

Hours of Daylight and Twilight in September 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Hours of Daylight and Twilight in September 2017 at South Marsh Island1815222988991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 42 minSep 112 hr, 42 minSep 3011 hr, 54 minSep 3011 hr, 54 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Sunrise & Sunset with Twilight in September 2017 at South Marsh Island1815222988991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 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 PM7:56 AM7:56 AMSep 218:05 PMSep 218:05 PM
The solar day over the course of September 2017. 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Solar Elevation and Azimuth in September 2017 at South Marsh IslandSep889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2017. 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Moon Rise, Set & Phases in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctSep 63:04 AMSep 63:04 AMSep 201:31 AMSep 201:31 AMOct 52:41 PMOct 52:41 PM8:15 PM8:15 PM8:03 AM8:03 AM7:15 AM7:15 AM8:05 PM8:05 PM8:08 PM8:08 PM8:50 AM8:50 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 2017IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
83%-3:30 AMWSW5:24 PMESE10:52 PMS248,692 mi
2
90%-4:20 AMWSW6:10 PMESE11:42 PMS246,591 mi
3
93%-5:13 AMWSW6:53 PMESE--
4
95%-6:09 AMWSW7:35 PMESE12:31 AMS244,131 mi
5
99%-7:05 AMWSW8:15 PME1:20 AMS241,514 mi
6
100%-8:03 AMW8:54 PME2:09 AMS238,932 mi
7
99%-9:02 AMW9:33 PME2:57 AMS236,550 mi
8
95%-10:01 AMW10:12 PME3:46 AMS234,483 mi
9
89%-11:02 AMW10:53 PME4:36 AMS232,797 mi
10
81%-12:04 PMWNW11:36 PMENE5:27 AMS231,507 mi
11
71%-1:07 PMWNW-6:20 AMS230,598 mi
12
59%12:23 AMENE2:09 PMWNW-7:15 AMS230,043 mi
13
50%1:15 AMENE3:11 PMWNW-8:12 AMS229,824 mi
14
36%2:10 AMENE4:10 PMWNW-9:10 AMS229,942 mi
15
25%3:09 AMENE5:05 PMWNW-10:08 AMS230,427 mi
16
15%4:10 AMENE5:56 PMWNW-11:05 AMS231,318 mi
17
8%5:13 AMENE6:43 PMWNW-11:59 AMS232,653 mi
18
3%6:14 AMENE7:25 PMW-12:51 PMS234,443 mi
19
0%7:15 AME8:05 PMW-1:41 PMS236,651 mi
20
0%8:13 AME8:43 PMW-2:29 PMS239,182 mi
21
3%9:10 AME9:19 PMW-3:15 PMS241,890 mi
22
7%10:06 AME9:56 PMW-4:01 PMS244,584 mi
23
14%11:01 AMESE10:33 PMWSW-4:47 PMS247,056 mi
24
21%11:54 AMESE11:12 PMWSW-5:33 PMS249,099 mi
25
30%12:47 PMESE11:53 PMWSW-6:20 PMS250,530 mi
26
39%1:38 PMESE--7:07 PMS251,207 mi
27
50%-12:36 AMWSW2:28 PMESE7:55 PMS251,045 mi
28
59%-1:22 AMWSW3:17 PMESE8:44 PMS250,026 mi
29
68%-2:11 AMWSW4:03 PMESE9:33 PMS248,206 mi
30
77%-3:02 AMWSW4:47 PMESE10:21 PMS245,710 mi

Wind Speed in September 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Wind Speed in September 2017 at South Marsh Island1815222988991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mphAugOct
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in September 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Hourly Wind Speed in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Hourly Wind Direction in 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2017 at South Marsh Island

History:20192018JFMAMJJASepOND20162015
Atmospheric Pressure in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.6 inHg29.6 inHg29.7 inHg29.7 inHg29.8 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 2017 at South Marsh Island Fall 2017

Number of Reports by Day in September 2017 at South Marsh Island181522298899101011111212131314141515161617171818191920202121222223232424252526262727282829293030005050100100150150200200AugOct
regularspecialcorrection
The number of reports per day.

Reports by Hour in September 2017 at South Marsh Island Fall 2017

Reports by Hour in September 2017 at South Marsh Island18152229889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2017.

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

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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