Click on a day for an hourly weather forecast
The temperatures in Gunnedah in September are quite cold with temperatures between 8°C and 20°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Gunnedah 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 Gunnedah in September 2025.
If you’re planning to visit Gunnedah in the near future, we highly recommend that you review the 14 day weather forecast for Gunnedah before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 18° | 7 | 24 | 0 | 74 mm | Ok | Gunnedah in January |
| February | 29° / 17° | 5 | 23 | 0 | 68 mm | Good | Gunnedah in February |
| March | 27° / 16° | 6 | 25 | 0 | 79 mm | Perfect | Gunnedah in March |
| April | 23° / 12° | 3 | 27 | 0 | 28 mm | Perfect | Gunnedah in April |
| May | 18° / 7° | 3 | 28 | 0 | 37 mm | Good | Gunnedah in May |
| June | 14° / 5° | 4 | 26 | 0 | 59 mm | Good | Gunnedah in June |
| July | 14° / 4° | 4 | 27 | 0 | 45 mm | Good | Gunnedah in July |
| August | 16° / 5° | 3 | 28 | 0 | 44 mm | Good | Gunnedah in August |
| September | 20° / 8° | 4 | 26 | 0 | 51 mm | Good | Gunnedah in September |
| October | 23° / 11° | 6 | 25 | 0 | 67 mm | Perfect | Gunnedah in October |
| November | 26° / 14° | 7 | 24 | 0 | 82 mm | Good | Gunnedah in November |
| December | 29° / 16° | 8 | 23 | 0 | 91 mm | Ok | Gunnedah in December |