Click on a day for an hourly weather forecast
The temperatures in Slovenj Gradec in September are usually low and can range between 10°C and 20°C.
You can expect rain for roughly half of the month of September in Slovenj Gradec. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Slovenj Gradec in September 2025.
If you’re planning to visit Slovenj Gradec in the near future, we highly recommend that you review the 14 day weather forecast for Slovenj Gradec before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -4° | 6 | 11 | 14 | 91 mm | Awful | Slovenj Gradec in January |
| February | 4° / -4° | 7 | 10 | 13 | 145 mm | Awful | Slovenj Gradec in February |
| March | 9° / 0° | 7 | 17 | 7 | 120 mm | Awful | Slovenj Gradec in March |
| April | 14° / 4° | 9 | 19 | 2 | 160 mm | Bad | Slovenj Gradec in April |
| May | 18° / 8° | 16 | 15 | 0 | 333 mm | Ok | Slovenj Gradec in May |
| June | 23° / 12° | 15 | 15 | 0 | 307 mm | Good | Slovenj Gradec in June |
| July | 25° / 14° | 15 | 16 | 0 | 285 mm | Good | Slovenj Gradec in July |
| August | 25° / 14° | 11 | 20 | 0 | 237 mm | Good | Slovenj Gradec in August |
| September | 20° / 10° | 8 | 22 | 0 | 205 mm | Ok | Slovenj Gradec in September |
| October | 14° / 5° | 7 | 24 | 0 | 121 mm | Ok | Slovenj Gradec in October |
| November | 9° / 2° | 8 | 19 | 3 | 153 mm | Awful | Slovenj Gradec in November |
| December | 4° / -3° | 6 | 15 | 9 | 108 mm | Awful | Slovenj Gradec in December |