Jackson weather in September

In September, Jackson sees average daytime highs of 72°F and overnight lows near 54°F, with 2.8 in of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 77°F in the first days to 67°F by the end. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Jackson's 1st-clearest and 9th-windiest month. For the whole year in context, see Jackson's year-round climate.

Daytime high
72°
4th warmest
Overnight low
54°
9th coldest
Rainfall
2.8 in
9 wet days
Daylight
12 h 18 min
6:24 AM – 6:40 PM
Cloud cover
55%
1st clearest
Wind
7 mph
9th windiest
Solar energy
4.31 kWh/m²
Travel score
6.9
out of 10

Jackson is seat of Jackson County, Michigan, United States.

Density
1,165/km²
people per km²
Founded
1829

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 77°F in the first days to 67°F by the end.

A typical September day in Jackson reaches about 72°F in the afternoon and slips back to 54°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 83°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17759
27759
37759
47658
57658
67658
77657
87557
97557
107456
117456
127456
137355
147355
157354
167254
177254
187253
197153
207152
217052
227052
237051
246951
256950
266850
276850
286749
296749
306748

How September really feels in Jackson

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Jackson weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan31° / 18°2.510.37.99.30.0
Feb34° / 20°2.08.15.910.30.0
Mar45° / 28°2.5103.611.61.0
Apr57° / 39°3.611.81.413.13.9
May68° / 50°4.012.8014.45.8
Jun78° / 60°3.711.60156.4
Jul81° / 64°3.410.6014.86.4
Aug79° / 62°3.410.4013.76.6
Sep72° / 54°2.89012.36.9
Oct60° / 43°2.99.70.210.84.7
Nov46° / 33°2.69.32.59.61.3
Dec35° / 24°2.29.66.190.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25644
35644
45743
55743
65644
75545
85545
95545
105347
115347
125347
135248
145248
155149
165149
175050
185050
194951
204951
214951
224951
234852
244951
254951
264852
274951
284951
294951
305050

Chance of precipitation in September

Any precipitation

Jackson gets around 2.8 in of rain over 9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1530
1629
1729
1829
1929
2029
2129
2230
2330
2431
2531
2632
2732
2832
2933
3033

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1312721202
2332720192
3352719172
4362719161
5382718151
6402718141
7422717131
8432717121
9452617111
10462617101
1148261691
1250251691
1351241681
1454231571
1555231570
1656221570
1759211460
1861201360
1962191360
2065181250
2166181150
2267171150
2370161040
247116940
257215940
267414840
277514830
287614730
297713730
307813630

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:07 AM to 6:39 AM, and sunset from 7:07 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:077:07
213.06:087:06
312.96:097:04
412.96:107:02
512.86:127:00
612.86:136:59
712.76:146:57
812.76:156:55
912.66:166:53
1012.66:176:51
1112.56:186:49
1212.56:196:48
1312.46:206:46
1412.46:216:44
1512.36:226:42
1612.36:246:40
1712.26:256:39
1812.26:266:37
1912.16:276:35
2012.16:286:33
2112.06:296:31
2212.06:306:29
2311.96:316:28
2411.96:326:26
2511.86:336:24
2611.86:356:22
2711.76:366:20
2811.76:376:18
2911.66:386:17
3011.66:396:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.31 kWh/m².

For context, solar energy here swings from a low near 1.42 kWh/m² to a high of 6.29 kWh/m² in June across the year — September's 4.31 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.5Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.0Bright
234.0Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Jackson?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.9
Sightseeing
1st-best month of the year
4.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Jackson for sightseeing.

What to pack for Jackson in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Jackson sees daytime highs around 72°F and nights near 54°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Jackson in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jackson peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Jackson in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Jackson is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1315 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul15Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Jackson?

Jackson sits at 42.2°N, 84.4°W, 932 ft above sea level, in United States. The nearest listed city is Holt, 28 mi away.

Topography around Jackson

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jackson.

Within 2 miles, the terrain around Jackson has only modest variations in elevation — a maximum elevation change of 194 ft around an average of 974 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 331 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 761 ft.

The land around Jackson is covered by trees (51%) and artificial surfaces (34%) within 2 miles, trees (56%) within 10 miles, and cropland (44%) and trees (40%) within 50 miles.

2 miles
194 ft
10 miles
331 ft
50 miles
761 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Holt 28 mi · Adrian 30 mi · Okemos 33 mi · Ann Arbor 34 mi · East Lansing 34 mi · Lansing 35 mi · Haslett 35 mi · Waverly 36 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jackson (42.2459°, -84.4013°, elevation 932 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).