Click on a day for an hourly weather forecast
The temperatures in Bellingham in May are quite cold with temperatures between 8°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Bellingham during the month of May. 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 Bellingham in May 2025.
If you’re planning to visit Bellingham in the near future, we highly recommend that you review the 14 day weather forecast for Bellingham before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 14 | 16 | 1 | 212 mm | Bad | Bellingham in January |
| February | 7° / 1° | 11 | 15 | 2 | 134 mm | Awful | Bellingham in February |
| March | 9° / 3° | 14 | 16 | 1 | 186 mm | Bad | Bellingham in March |
| April | 12° / 5° | 11 | 19 | 0 | 120 mm | Bad | Bellingham in April |
| May | 16° / 8° | 7 | 24 | 0 | 86 mm | Ok | Bellingham in May |
| June | 19° / 10° | 6 | 24 | 0 | 55 mm | Good | Bellingham in June |
| July | 22° / 13° | 3 | 28 | 0 | 25 mm | Good | Bellingham in July |
| August | 22° / 14° | 3 | 28 | 0 | 34 mm | Good | Bellingham in August |
| September | 19° / 11° | 8 | 22 | 0 | 118 mm | Ok | Bellingham in September |
| October | 14° / 8° | 12 | 19 | 0 | 192 mm | Ok | Bellingham in October |
| November | 9° / 4° | 15 | 15 | 0 | 278 mm | Bad | Bellingham in November |
| December | 5° / 1° | 13 | 16 | 1 | 210 mm | Awful | Bellingham in December |