Click on a day for an hourly weather forecast
The temperatures in Maryland Heights in September are comfortable with low of 16°C and and high up to 27°C.
You can expect about 3 to 8 days of rain in Maryland Heights during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Maryland Heights in September 2025.
If you’re planning to visit Maryland Heights in the near future, we highly recommend that you review the 14 day weather forecast for Maryland Heights before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -4° | 5 | 19 | 8 | 81 mm | Awful | Maryland Heights in January |
| February | 5° / -2° | 4 | 17 | 8 | 89 mm | Awful | Maryland Heights in February |
| March | 13° / 4° | 8 | 20 | 3 | 136 mm | Awful | Maryland Heights in March |
| April | 18° / 9° | 8 | 22 | 1 | 180 mm | Ok | Maryland Heights in April |
| May | 24° / 15° | 10 | 21 | 0 | 194 mm | Good | Maryland Heights in May |
| June | 29° / 20° | 10 | 20 | 0 | 203 mm | Ok | Maryland Heights in June |
| July | 31° / 21° | 9 | 22 | 0 | 173 mm | Ok | Maryland Heights in July |
| August | 30° / 20° | 6 | 25 | 0 | 174 mm | Good | Maryland Heights in August |
| September | 27° / 16° | 6 | 24 | 0 | 124 mm | Perfect | Maryland Heights in September |
| October | 20° / 10° | 5 | 26 | 0 | 125 mm | Good | Maryland Heights in October |
| November | 12° / 4° | 5 | 23 | 2 | 101 mm | Bad | Maryland Heights in November |
| December | 7° / 0° | 5 | 22 | 5 | 95 mm | Bad | Maryland Heights in December |