Climateby Month

Lansing, MI weather in September

NOAA 1991-2020 normals and daily records · Lansing all year

In September, Lansing sees highs around 74°F and lows around 52°F: mild, with frequent rain. There are about 10 days with rain. Great for outdoor plans.

Normal high
74°F
Normal low
52°F
Wet days
10
2.8 in total
Muggy days
2
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high78°F68°F
Normal low57°F46°F
Chance of a wet day32%36%
Sunrise / sunset7:03 am / 8:13 pm7:34 am / 7:21 pm
Daylight13.2 h11.8 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical September day

  1. 6 am54°Fdew point 51°F
  2. 9 am62°Fdew point 54°F
  3. Noon69°Fdew point 54°F
  4. 3 pm71°Fdew point 53°F
  5. 6 pm68°Fdew point 53°F
  6. 9 pm60°Fdew point 53°F

NOAA hourly normals (local standard time) from Lansing Capital City Airport (4 mi away); average wind 7 mph; clear or few clouds in 38% of daytime hours, mostly cloudy or overcast in 47%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F16 of 30
  • Hot dayshigh 90°F or more1 of 30
  • Muggy daysdaily mean dew point 65°F or more2 of 30
  • Wet daysat least 0.01 in of rain or melted snow10 of 30
  • Notable rainat least 0.10 in5 of 30
  • Freezing nightslow 32°F or below1 of 30
  • Snow on the groundsnow depth 1 in or more0 of 30

Average days per September, counted from daily records for each year 1991-2020.

Rain in September

Normal precipitation is 2.8 in; a dry September brings about 1.6 in and a wet one about 3.3 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How September varies from year to year

  • Warmest September, 1991-20202002: average high 79°F
  • Coolest September1993: average high 66°F
  • Wettest September2008: 8.2 in
  • Driest September2002: 0.7 in
  • Highest reading95°F (September 21, 2017)
  • Lowest reading22°F (September 28, 1991)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

September compared with August and October

AugustSeptemberOctober
Normal high81°F74°F61°F
Normal low60°F52°F41°F
Wet days101012
Comfortable days101610
Daylight13.9 h12.5 h11.0 h

Highs change by -7°F from August and -13°F into October.

Nearby alternatives in September

How Lansing ranks in September

  • Normal high305th warmest of 378 cities; 6th of 8 in Michigan
  • Wet days315th driest of 378
  • Comfortable days48th most of 342

What to pack for Lansing in September

  • A rain jacket or umbrella – rain on about 10 days

Heating and cooling

September has 140 heating degree days and 66 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is Lansing in September?

The normal high is 74°F and the normal low is 52°F. From 1991 to 2020 the hottest September reading was 95°F (September 21, 2017).

Does it rain a lot in Lansing in September?

About 10 days in September have at least 0.01 in of precipitation, and the normal total is 2.8 in. The wettest September in 1991-2020 was in 2008 (8.2 in); the driest was in 2002 (0.7 in).

Is September a good time to visit Lansing?

September ranks 3rd of 12 months on our comfort score for Lansing (70 out of 100). It has about 16 comfortable days and about 1 day at 90°F or hotter. The best months are May, June and September.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Lansing Capital City Airport (USW00014836), 3.5 mi NNW of the city center, 841 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Capital City Airport (725390-14836), 3.8 mi NW of the city center, 857 ft . Hourly observations, 1991-2020.