Click on a day for an hourly weather forecast
The temperatures in Gilroy in December are quite cold with temperatures between 5°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Gilroy during the month of December. 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 Gilroy in December 2024.
If you’re planning to visit Gilroy in the near future, we highly recommend that you review the 14 day weather forecast for Gilroy before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 5° | 5 | 26 | 0 | 95 mm | Good | Gilroy in January |
| February | 17° / 5° | 5 | 24 | 0 | 72 mm | Good | Gilroy in February |
| March | 18° / 6° | 6 | 25 | 0 | 89 mm | Good | Gilroy in March |
| April | 20° / 7° | 3 | 27 | 0 | 30 mm | Good | Gilroy in April |
| May | 23° / 9° | 1 | 30 | 0 | 11 mm | Perfect | Gilroy in May |
| June | 26° / 11° | 0 | 30 | 0 | 3 mm | Perfect | Gilroy in June |
| July | 28° / 13° | 0 | 31 | 0 | 2 mm | Perfect | Gilroy in July |
| August | 28° / 13° | 0 | 31 | 0 | 0 mm | Perfect | Gilroy in August |
| September | 28° / 14° | 0 | 30 | 0 | 4 mm | Perfect | Gilroy in September |
| October | 25° / 11° | 1 | 30 | 0 | 24 mm | Perfect | Gilroy in October |
| November | 19° / 7° | 4 | 27 | 0 | 43 mm | Good | Gilroy in November |
| December | 15° / 5° | 6 | 25 | 0 | 94 mm | Good | Gilroy in December |