Click on a day for an hourly weather forecast
The weather in Calw in January is very cold with temperatures between -1°C and 4°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Calw during the month of January. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Calw is going to experience quite a number of days of snow during January. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in Calw in January 2026.
If you’re planning to visit Calw in the near future, we highly recommend that you review the 14 day weather forecast for Calw before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -1° | 7 | 12 | 12 | 72 mm | Awful | Calw in January |
| February | 6° / 0° | 7 | 12 | 9 | 62 mm | Awful | Calw in February |
| March | 11° / 2° | 6 | 20 | 5 | 52 mm | Bad | Calw in March |
| April | 16° / 5° | 5 | 23 | 2 | 48 mm | Ok | Calw in April |
| May | 19° / 8° | 8 | 23 | 0 | 109 mm | Ok | Calw in May |
| June | 23° / 12° | 5 | 25 | 0 | 97 mm | Perfect | Calw in June |
| July | 25° / 14° | 5 | 26 | 0 | 100 mm | Perfect | Calw in July |
| August | 25° / 14° | 5 | 26 | 0 | 80 mm | Perfect | Calw in August |
| September | 21° / 11° | 3 | 27 | 0 | 52 mm | Good | Calw in September |
| October | 15° / 7° | 5 | 26 | 0 | 58 mm | Good | Calw in October |
| November | 10° / 4° | 6 | 22 | 3 | 67 mm | Bad | Calw in November |
| December | 6° / 1° | 8 | 15 | 8 | 76 mm | Awful | Calw in December |