Click on a day for an hourly weather forecast
The weather in Lillehammer in September is very cold with temperatures between 4°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Lillehammer 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 Lillehammer in September 2025.
If you’re planning to visit Lillehammer in the near future, we highly recommend that you review the 14 day weather forecast for Lillehammer before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -5° / -11° | 4 | 9 | 19 | 69 mm | Awful | Lillehammer in January |
| February | -4° / -11° | 3 | 7 | 18 | 54 mm | Awful | Lillehammer in February |
| March | 0° / -8° | 5 | 9 | 17 | 57 mm | Awful | Lillehammer in March |
| April | 5° / -3° | 6 | 15 | 9 | 51 mm | Awful | Lillehammer in April |
| May | 12° / 1° | 9 | 18 | 4 | 125 mm | Awful | Lillehammer in May |
| June | 17° / 6° | 8 | 22 | 0 | 129 mm | Ok | Lillehammer in June |
| July | 20° / 8° | 11 | 20 | 0 | 170 mm | Ok | Lillehammer in July |
| August | 18° / 7° | 10 | 21 | 0 | 147 mm | Ok | Lillehammer in August |
| September | 13° / 4° | 6 | 24 | 0 | 101 mm | Ok | Lillehammer in September |
| October | 6° / 0° | 8 | 17 | 5 | 93 mm | Awful | Lillehammer in October |
| November | 0° / -4° | 8 | 11 | 12 | 85 mm | Awful | Lillehammer in November |
| December | -4° / -9° | 5 | 8 | 19 | 76 mm | Awful | Lillehammer in December |