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The temperatures in Frauenfeld in September are quite cold with temperatures between 9°C and 21°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Frauenfeld 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 Frauenfeld in September 2026.
If you’re planning to visit Frauenfeld in the near future, we highly recommend that you review the 14 day weather forecast for Frauenfeld before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -4° | 7 | 11 | 13 | 141 mm | Awful | Frauenfeld in January |
| February | 5° / -3° | 8 | 10 | 12 | 110 mm | Awful | Frauenfeld in February |
| March | 10° / 0° | 7 | 16 | 7 | 102 mm | Awful | Frauenfeld in March |
| April | 16° / 3° | 6 | 22 | 2 | 91 mm | Ok | Frauenfeld in April |
| May | 19° / 6° | 9 | 22 | 0 | 166 mm | Ok | Frauenfeld in May |
| June | 23° / 11° | 9 | 21 | 0 | 159 mm | Good | Frauenfeld in June |
| July | 25° / 13° | 8 | 23 | 0 | 146 mm | Good | Frauenfeld in July |
| August | 25° / 12° | 6 | 25 | 0 | 121 mm | Perfect | Frauenfeld in August |
| September | 21° / 9° | 4 | 26 | 0 | 79 mm | Good | Frauenfeld in September |
| October | 15° / 5° | 6 | 25 | 0 | 91 mm | Good | Frauenfeld in October |
| November | 9° / 1° | 7 | 19 | 5 | 104 mm | Awful | Frauenfeld in November |
| December | 5° / -2° | 9 | 13 | 10 | 153 mm | Awful | Frauenfeld in December |