Click on a day for an hourly weather forecast
The temperatures in Gilroy in January are quite cold with temperatures between 5°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Gilroy 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.
Our weather forecast can give you a great sense of what weather to expect in Gilroy in January 2025.
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 |