Click on a day for an hourly weather forecast
The temperatures in Sunnyvale in July are comfortable with low of 14°C and and high up to 28°C.
There is little to no rain in Sunnyvale during July, so it’s a lot easier to explore the city. Just remember to dress in warm layers, as it can still get pretty chilly.
Our weather forecast can give you a great sense of what weather to expect in Sunnyvale in July 2025.
If you’re planning to visit Sunnyvale in the near future, we highly recommend that you review the 14 day weather forecast for Sunnyvale before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 7° | 5 | 27 | 0 | 107 mm | Good | Sunnyvale in January |
| February | 16° / 7° | 4 | 24 | 0 | 94 mm | Good | Sunnyvale in February |
| March | 17° / 7° | 5 | 26 | 0 | 92 mm | Good | Sunnyvale in March |
| April | 20° / 8° | 2 | 28 | 0 | 40 mm | Good | Sunnyvale in April |
| May | 22° / 10° | 1 | 30 | 0 | 17 mm | Good | Sunnyvale in May |
| June | 26° / 13° | 0 | 30 | 0 | 6 mm | Perfect | Sunnyvale in June |
| July | 28° / 14° | 0 | 31 | 0 | 3 mm | Perfect | Sunnyvale in July |
| August | 28° / 15° | 0 | 31 | 0 | 2 mm | Perfect | Sunnyvale in August |
| September | 28° / 15° | 0 | 30 | 0 | 6 mm | Perfect | Sunnyvale in September |
| October | 24° / 13° | 1 | 30 | 0 | 30 mm | Perfect | Sunnyvale in October |
| November | 19° / 10° | 3 | 27 | 0 | 58 mm | Good | Sunnyvale in November |
| December | 15° / 7° | 5 | 26 | 0 | 90 mm | Good | Sunnyvale in December |