Click on a day for an hourly weather forecast
The weather in Grantham in March is very cold with temperatures between 3°C and 10°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Grantham during the month of March. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Grantham can expect a few days of snow in March.
Our weather forecast can give you a great sense of what weather to expect in Grantham in March 2025.
If you’re planning to visit Grantham in the near future, we highly recommend that you review the 14 day weather forecast for Grantham before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 1° | 7 | 20 | 5 | 46 mm | Awful | Grantham in January |
| February | 7° / 2° | 6 | 16 | 6 | 44 mm | Bad | Grantham in February |
| March | 10° / 3° | 6 | 23 | 2 | 44 mm | Bad | Grantham in March |
| April | 13° / 4° | 4 | 26 | 1 | 37 mm | Ok | Grantham in April |
| May | 15° / 7° | 6 | 25 | 0 | 62 mm | Good | Grantham in May |
| June | 18° / 10° | 5 | 25 | 0 | 75 mm | Good | Grantham in June |
| July | 21° / 12° | 4 | 27 | 0 | 64 mm | Good | Grantham in July |
| August | 21° / 13° | 5 | 26 | 0 | 65 mm | Good | Grantham in August |
| September | 18° / 11° | 3 | 27 | 0 | 40 mm | Good | Grantham in September |
| October | 14° / 8° | 5 | 26 | 0 | 59 mm | Good | Grantham in October |
| November | 10° / 5° | 7 | 23 | 0 | 53 mm | Bad | Grantham in November |
| December | 7° / 3° | 6 | 21 | 3 | 52 mm | Bad | Grantham in December |