Climateby Month

Fishers, IN weather in September

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

In September, Fishers sees highs around 77°F and lows around 55°F: mild, with some rain. Expect about 9 wet days. Good for outdoor plans.

Normal high
77°F
Normal low
55°F
Wet days
9
3.7 in total
Muggy days
5
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high80°F72°F
Normal low60°F50°F
Chance of a wet day29%29%
Sunrise / sunset7:12 am / 8:16 pm7:39 am / 7:28 pm
Daylight13.1 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 am60°Fdew point 56°F
  2. 9 am65°Fdew point 57°F
  3. Noon74°Fdew point 57°F
  4. 3 pm77°Fdew point 56°F
  5. 6 pm74°Fdew point 56°F
  6. 9 pm67°Fdew point 56°F

NOAA hourly normals (local standard time) from Indianapolis (22 mi away); average wind 8 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F13 of 30
  • Hot dayshigh 90°F or more2 of 30
  • Muggy daysdaily mean dew point 65°F or more5 of 30
  • Wet daysat least 0.01 in of rain or melted snow9 of 30
  • Notable rainat least 0.10 in6 of 30
  • Freezing nightslow 32°F or below0 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 3.7 in; a dry September brings about 1.5 in and a wet one about 5.5 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, 1991-20201998: average high 84°F
  • Coolest September2011: average high 72°F
  • Wettest September2018: 8.7 in
  • Driest September2004: 0.04 in
  • Highest reading96°F (September 5, 1999)
  • Lowest reading28°F (September 23, 1995)

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 high82°F77°F65°F
Normal low62°F55°F44°F
Wet days10910
Comfortable days51314
Daylight13.7 h12.4 h11.1 h

Highs change by -5°F from August and -12°F into October.

Nearby alternatives in September

How Fishers ranks in September

  • Normal high249th warmest of 378 cities; 4th of 6 in Indiana
  • Wet days219th driest of 378
  • Comfortable days124th most of 342

What to pack for Fishers in September

  • A rain jacket or umbrella – rain on about 9 days

Heating and cooling

September has 80 heating degree days and 104 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is Fishers in September?

The normal high is 77°F and the normal low is 55°F. From 1991 to 2020 the hottest September reading was 96°F (most recently on September 5, 1999).

Does it rain a lot in Fishers in September?

About 9 days in September have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest September in 1991-2020 was in 2018 (8.7 in); the driest was in 2004 (0.04 in).

Is September a good time to visit Fishers?

September ranks 3rd of 12 months on our comfort score for Fishers (65 out of 100). It has about 13 comfortable days and about 2 days at 90°F or hotter. The best months are April and May.

Where the numbers come from

  • Temperature and snow depth: Whitestown (USC00129557), 18 mi W of the city center, 941 ft (125 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Rain: Greenfield (USC00123527), 18 mi SE of the city center, 869 ft (53 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Snowfall and humidity and wind by hour: Indianapolis (USW00093819), 22 mi SW of the city center, 790 ft . NOAA normals and daily records, 1991-2020.
  • Frost dates: Carmel 3 E (USC00121303), 2.4 mi W of the city center, 752 ft (64 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Indianapolis International Airport (724380-93819), 21 mi SW of the city center, 792 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).