Click on a day for an hourly weather forecast
The temperatures in Fishkill in September are comfortable with low of 13°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in Fishkill 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 Fishkill in September 2025.
If you’re planning to visit Fishkill in the near future, we highly recommend that you review the 14 day weather forecast for Fishkill before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -6° | 5 | 14 | 12 | 112 mm | Awful | Fishkill in January |
| February | 2° / -6° | 6 | 9 | 13 | 127 mm | Awful | Fishkill in February |
| March | 7° / -2° | 8 | 13 | 10 | 144 mm | Awful | Fishkill in March |
| April | 13° / 4° | 9 | 19 | 2 | 136 mm | Awful | Fishkill in April |
| May | 20° / 10° | 9 | 22 | 0 | 144 mm | Ok | Fishkill in May |
| June | 25° / 14° | 8 | 22 | 0 | 159 mm | Good | Fishkill in June |
| July | 28° / 17° | 10 | 21 | 0 | 186 mm | Good | Fishkill in July |
| August | 27° / 17° | 7 | 24 | 0 | 174 mm | Good | Fishkill in August |
| September | 23° / 13° | 6 | 24 | 0 | 132 mm | Perfect | Fishkill in September |
| October | 16° / 8° | 6 | 24 | 1 | 152 mm | Good | Fishkill in October |
| November | 9° / 2° | 7 | 20 | 3 | 112 mm | Awful | Fishkill in November |
| December | 3° / -2° | 7 | 14 | 10 | 155 mm | Awful | Fishkill in December |