Topeka, KS weather in September
Topeka is warm in September, with some rain: highs average 81°F and nights drop to about 58°F. Rain falls on about 8 days.
- Normal high
- 81°F
- Normal low
- 58°F
- Wet days
- 8
- 3.5 in total
- Muggy days
- 7
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 86°F | 76°F |
| Normal low | 63°F | 52°F |
| Chance of a wet day | 27% | 25% |
| Sunrise / sunset | 6:51 am / 7:53 pm | 7:17 am / 7:07 pm |
| Daylight | 13.0 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am60°Fdew point 56°F
- 9 am68°Fdew point 59°F
- Noon77°Fdew point 58°F
- 3 pm79°Fdew point 57°F
- 6 pm75°Fdew point 58°F
- 9 pm67°Fdew point 59°F
NOAA hourly normals (local standard time) from Topeka Muni Airport (3 mi away); average wind 7 mph; clear or few clouds in 74% of daytime hours, mostly cloudy or overcast in 21%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 30
- Hot dayshigh 90°F or more5 of 30
- Muggy daysdaily mean dew point 65°F or more7 of 30
- Wet daysat least 0.01 in of rain or melted snow8 of 30
- Notable rainat least 0.10 in5 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 3.5 in; a dry September brings about 1.8 in and a wet one about 4.4 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, 1991-20202000: average high 87°F
- Coolest September1993: average high 75°F
- Wettest September2016: 7.8 in
- Driest September2012: 0.6 in
- Highest reading109°F (September 2, 2000)
- Lowest reading31°F (September 22, 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
| August | September | October | |
|---|---|---|---|
| Normal high | 89°F | 81°F | 69°F |
| Normal low | 67°F | 58°F | 45°F |
| Wet days | 9 | 8 | 8 |
| Comfortable days | 2 | 10 | 15 |
| Daylight | 13.7 h | 12.4 h | 11.2 h |
Highs change by -8°F from August and -12°F into October.
How Topeka ranks in September
- Normal high186th warmest of 378 cities; 2nd of 3 in Kansas
- Wet days176th driest of 378
- Comfortable days161st most of 342
Heating and cooling
September has 51 heating degree days and 179 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Topeka in September?
The normal high is 81°F and the normal low is 58°F. From 1991 to 2020 the hottest September reading was 109°F (September 2, 2000).
Does it rain a lot in Topeka in September?
About 8 days in September have at least 0.01 in of precipitation, and the normal total is 3.5 in. The wettest September in 1991-2020 was in 2016 (7.8 in); the driest was in 2012 (0.6 in).
Is September a good time to visit Topeka?
September ranks 4th of 12 months on our comfort score for Topeka (58 out of 100). It has about 10 comfortable days and about 5 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Topeka Muni Airport (USW00013996), 3.2 mi ENE of the city center, 876 ft (72 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Philip Billard Municipal Airport (724560-13996), 3.2 mi ENE of the city center, 880 ft (68 ft lower than the city). Hourly observations, 1991-2020.