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September 2011 Weather History in Pasadena United States

The data for this report comes from the Los Angeles International Airport. See all nearby weather stations

This report shows the past weather for Pasadena, providing a weather history for September 2011. It features all historical weather data series we have available, including the Pasadena temperature history for September 2011. You can drill down from year to month and even day level reports by clicking on the graphs.

Pasadena Temperature History September 2011

History:20132012JFMAMJJASepOND20102009
Temperature history in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303050°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Hourly Temperature in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOctcoolcomfortablewarm
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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Cloud Cover in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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.

Daily Precipitation in September 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Daily Precipitation in September 2011 in Pasadena181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 inAugOct
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in September 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Observed Weather in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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
Thu, Sep 1 Haze, Mist, Patches of FogHZ, BR, BCFG
Fri, Sep 2 Haze, Mist, Patches of FogHZ, BR, BCFG
Sat, Sep 3 Haze, Mist, Patches of FogHZ, BR, BCFG
Sun, Sep 4 Mist, Patches of FogBR, BCFG
Mon, Sep 5 Light Rain0.00 in-RA
Tue, Sep 6 Patches of FogBCFG
Thu, Sep 8 Patches of FogBCFG
Fri, Sep 9 Haze, MistHZ, BR
Tue, Sep 13 Mist, Patches of FogBR, BCFG
Wed, Sep 14 Haze, MistHZ, BR
Thu, Sep 15 Haze, Mist, Patches of FogHZ, BR, BCFG
Fri, Sep 16 Light Drizzle, Haze, Mist0.00 in-DZ, HZ, BR
Mon, Sep 19 Haze, Fog, Mist, Patches of FogHZ, FG, BR, BCFG
Tue, Sep 20 Haze, Fog, Mist, Patches of FogHZ, FG, BR, BCFG
Wed, Sep 21 Haze, MistHZ, BR
Thu, Sep 22 Haze, Fog, Mist, Patches of FogHZ, FG, BR, BCFG
Fri, Sep 23 Haze, Mist, Patches of FogHZ, BR, BCFG
Sat, Sep 24 Light Drizzle, Haze, Mist0.00 in-DZ, HZ, BR
Tue, Sep 27 Haze, Mist, Patches of FogHZ, BR, BCFG
Wed, Sep 28 Haze, Mist, Patches of FogHZ, BR, BCFG
Thu, Sep 29 Haze, Mist, Patches of FogHZ, BR, BCFG
Fri, Sep 30 Light Rain, Haze0.01 in-RA, HZ

Hours of Daylight and Twilight in September 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Hours of Daylight and Twilight in September 2011 in Pasadena181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2312 hr, 9 minSep 2312 hr, 9 minnightnightdaydaySep 112 hr, 53 minSep 112 hr, 53 minSep 3011 hr, 52 minSep 3011 hr, 52 minSep 1112 hr, 32 minSep 1112 hr, 32 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Sunrise & Sunset with Twilight in September 2011 in Pasadena181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct6:25 AM6:25 AMSep 17:18 PMSep 17:18 PM6:46 AM6:46 AMSep 306:38 PMSep 306:38 PM6:32 AM6:32 AMSep 117:05 PMSep 117:05 PM6:39 AM6:39 AMSep 216:50 PMSep 216:50 PM
The solar day over the course of September 2011. 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Solar Elevation and Azimuth in September 2011 in PasadenaSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct001010202030304040505060001010202030304040505060
northeastsouthwest
Solar elevation and azimuth over the course of September 2011. 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Moon Rise, Set & Phases in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 288:05 PMAug 288:05 PMSep 122:27 AMSep 122:27 AMSep 274:09 AMSep 274:09 AM5:53 AM5:53 AM6:58 PM6:58 PM6:31 PM6:31 PM6:51 AM6:51 AM7:00 AM7:00 AM6:42 PM6:42 PM
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 2011IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
20%10:34 AMESE9:30 PMWSW-4:03 PMS226,510 mi
2
31%11:44 AMESE10:16 PMWSW-5:00 PMS228,808 mi
3
42%12:51 PMESE11:07 PMWSW-5:59 PMS231,550 mi
4
50%1:53 PMESE--6:58 PMS234,491 mi
5
65%-12:03 AMWSW2:49 PMESE7:55 PMS237,431 mi
6
75%-1:02 AMWSW3:38 PMESE8:50 PMS240,231 mi
7
84%-2:02 AMWSW4:21 PMESE9:42 PMS242,808 mi
8
91%-3:02 AMWSW4:58 PMESE10:30 PMS245,125 mi
9
96%-4:02 AMWSW5:31 PMESE11:15 PMS247,163 mi
10
99%-5:00 AMW6:02 PME11:58 PMS248,911 mi
11
100%-5:56 AMW6:31 PME--
12
100%-6:51 AMW6:59 PME12:40 AMS250,349 mi
13
99%-7:46 AMW7:27 PME1:21 AMS251,438 mi
14
96%-8:41 AMWNW7:57 PMENE2:02 AMS252,118 mi
15
92%-9:36 AMWNW8:30 PMENE2:45 AMS252,313 mi
16
86%-10:31 AMWNW9:06 PMENE3:28 AMS251,939 mi
17
78%-11:27 AMWNW9:46 PMENE4:14 AMS250,918 mi
18
70%-12:21 PMWNW10:31 PMENE5:02 AMS249,197 mi
19
60%-1:14 PMWNW11:22 PMENE5:52 AMS246,763 mi
20
50%-2:04 PMWNW-6:44 AMS243,667 mi
21
40%12:18 AMENE2:50 PMWNW-7:36 AMS240,034 mi
22
29%1:19 AMENE3:33 PMWNW-8:29 AMS236,067 mi
23
19%2:23 AMENE4:13 PMWNW-9:21 AMS232,050 mi
24
11%3:30 AMENE4:51 PMW-10:13 AMS228,321 mi
25
4%4:39 AME5:27 PMW-11:05 AMS225,237 mi
26
1%5:49 AME6:04 PMW-11:57 AMS223,122 mi
27
0%7:00 AME6:42 PMWSW-12:52 PMS222,205 mi
28
3%8:12 AMESE7:23 PMWSW-1:48 PMS222,577 mi
29
9%9:25 AMESE8:09 PMWSW-2:47 PMS224,169 mi
30
17%10:36 AMESE9:00 PMWSW-3:48 PMS226,766 mi

Humidity Comfort Levels in September 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Humidity Comfort Levels in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Wind Speed in September 2011 in Pasadena181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mph30 mph30 mph35 mph35 mphAugOct
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in September 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Hourly Wind Speed in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Hourly Wind Direction in 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2011 in Pasadena

History:20132012JFMAMJJASepOND20102009
Atmospheric Pressure in September 2011 in Pasadena1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.7 inHg29.7 inHg29.8 inHg29.8 inHg29.9 inHg29.9 inHg30.0 inHg30.0 inHg30.1 inHg30.1 inHgAugOct
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the Los Angeles International Airport page.

See all nearby weather stations

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