September 2018 Weather History in Ann Arbor Michigan, United States

The data for this report comes from the Detroit Metropolitan Wayne County Airport. See all nearby weather stations

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

Ann Arbor Temperature History September 2018

Temperature history in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303030°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°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 in Ann Arbor

Hourly Temperature in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOctcoldcoolcomfortablewarmhot
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 in Ann Arbor

Cloud Cover in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 2018 in Ann Arbor

Daily Precipitation in September 2018 in Ann Arbor181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 in0 in1 in1 in2 in2 in3 in3 in4 in4 inAugOct
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in September 2018 in Ann Arbor

Observed Weather in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 Thunderstorm, Thunderstorm with Light Rain, Thunderstorm with Rain, Rain, Light Rain, Mist0.73 inTS, -TSRA, TSRA, RA, -RA, BR
Mon, Sep 3 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Mist0.72 inTS, VCTS, +TSRA, -TSRA, TSRA, -RA, BR
Tue, Sep 4 Thunderstorm with Rain, Rain, Mist, Shallow Fog0.09 inTSRA, RA, BR, MIFG
Wed, Sep 5 Thunderstorm in the Vicinity, Light Rain, Haze0.06 inVCTS, -RA, HZ
Thu, Sep 6 Thunderstorm with Light Rain, Thunderstorm with Rain, Rain, Light Rain, Mist0.03 in-TSRA, TSRA, RA, -RA, BR
Fri, Sep 7 Light Rain0.00 in-RA
Sun, Sep 9 Light Rain0.02 in-RA
Mon, Sep 10 Light Rain, Haze, Mist0.28 in-RA, HZ, BR
Wed, Sep 12 Haze, MistHZ, BR
Thu, Sep 13 Haze, Mist0.00 inHZ, BR
Fri, Sep 14 Haze, MistHZ, BR
Sat, Sep 15 Haze, MistHZ, BR
Sun, Sep 16 Haze, MistHZ, BR
Mon, Sep 17 Haze, MistHZ, BR
Tue, Sep 18 Thunderstorm, Light Rain, Haze, Mist0.03 inTS, -RA, HZ, BR
Wed, Sep 19 Light Rain, Haze0.00 in-RA, HZ
Thu, Sep 20 Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Heavy Rain, Rain, Light Rain, Mist1.53 in+TSRA, -TSRA, TSRA, +RA, RA, -RA, BR
Fri, Sep 21 Light Rain, Haze, Mist0.00 in-RA, HZ, BR
Sun, Sep 23 HazeHZ
Mon, Sep 24 Heavy Rain, Rain, Light Rain, Mist0.37 in+RA, RA, -RA, BR
Tue, Sep 25 Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Heavy Rain, Light Rain, Haze, Mist2.54 inVCTS, +TSRA, -TSRA, +RA, -RA, HZ, BR
Wed, Sep 26 Light Rain0.01 in-RA
Fri, Sep 28 Light Rain, Haze0.01 in-RA, HZ
Sun, Sep 30 Light Rain, Mist0.04 in-RA, BR

Hours of Daylight and Twilight in September 2018 in Ann Arbor

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 in Ann Arbor

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 in Ann Arbor

Solar Elevation and Azimuth in September 2018 in Ann ArborSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020303040405000101020203030404050
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 in Ann Arbor

Moon Rise, Set & Phases in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 PM8:12 PM8:12 PM6:50 AM6:50 AM6:45 AM6:45 AM8:16 PM8:16 PM7:41 PM7:41 PM7:44 AM7:44 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%-1:03 PMWNW11:39 PMENE6:01 AMS238,048 mi
2
50%-2:10 PMWNW-6:51 AMS235,225 mi
3
46%12:19 AMENE3:16 PMWNW-7:45 AMS232,363 mi
4
34%1:06 AMENE4:20 PMWNW-8:42 AMS229,634 mi
5
23%2:02 AMENE5:20 PMWNW-9:41 AMS227,266 mi
6
14%3:06 AMENE6:13 PMWNW-10:42 AMS225,512 mi
7
6%4:16 AMENE7:00 PMWNW-11:41 AMS224,612 mi
8
2%5:30 AMENE7:40 PMWNW-12:39 PMS224,737 mi
9
0%6:45 AMENE8:16 PMW-1:34 PMS225,944 mi
10
1%7:59 AME8:49 PMW-2:26 PMS228,161 mi
11
6%9:11 AME9:21 PMW-3:17 PMS231,192 mi
12
12%10:20 AME9:52 PMW-4:07 PMS234,755 mi
13
21%11:28 AMESE10:24 PMWSW-4:57 PMS238,525 mi
14
30%12:32 PMESE10:59 PMWSW-5:46 PMS242,186 mi
15
40%1:34 PMESE11:36 PMWSW-6:35 PMS245,462 mi
16
50%2:32 PMESE--7:25 PMS248,141 mi
17
60%-12:17 AMWSW3:26 PMESE8:15 PMS250,084 mi
18
69%-1:03 AMWSW4:15 PMESE9:04 PMS251,227 mi
19
78%-1:53 AMWSW4:59 PMESE9:53 PMS251,578 mi
20
86%-2:47 AMWSW5:38 PMESE10:40 PMS251,201 mi
21
92%-3:43 AMWSW6:13 PMESE11:27 PMS250,206 mi
22
94%-4:41 AMWSW6:44 PMESE--
23
96%-5:41 AMWSW7:13 PME12:12 AMS248,727 mi
24
100%-6:42 AMW7:41 PME12:57 AMS246,905 mi
25
100%-7:44 AMW8:08 PME1:41 AMS244,874 mi
26
99%-8:47 AMW8:37 PME2:26 AMS242,741 mi
27
95%-9:51 AMW9:07 PMENE3:11 AMS240,589 mi
28
89%-10:56 AMWNW9:40 PMENE3:59 AMS238,466 mi
29
81%-12:03 PMWNW10:18 PMENE4:49 AMS236,399 mi
30
72%-1:09 PMWNW11:02 PMENE5:41 AMS234,407 mi

Humidity Comfort Levels in September 2018 in Ann Arbor

Humidity Comfort Levels in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 in Ann Arbor

Wind Speed in September 2018 in Ann Arbor181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 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 2018 in Ann Arbor

Hourly Wind Speed in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 in Ann Arbor

Hourly Wind Direction in 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 in Ann Arbor

Atmospheric Pressure in September 2018 in Ann Arbor1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.7 inHg29.7 inHg29.8 inHg29.8 inHg29.9 inHg29.9 inHg30.0 inHg30.0 inHg30.1 inHg30.1 inHg30.2 inHg30.2 inHg30.3 inHg30.3 inHg30.4 inHg30.4 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 Detroit Metropolitan Wayne County Airport page.

See all nearby weather stations

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