Gilroy, CA
Climate overview — based on NOAA 1991-2020 normals from GILROY, CA US.
Year-round temperatures (°F)
Climate summary
Gilroy has an annual average temperature of 60.2°F with about 19.8 inches of precipitation per year. The warmest month is July (average high 87.2°F), and the coldest is December (average low 37.0°F). January is typically the wettest month (4.55 in) and July the driest (0.00 in).
Best time to visit Gilroy
Full guide →Climate change signal
All-time records →48 of 366 (13.1%) of Gilroy's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1900s | 0 | |
| 1910s | 0 | |
| 1950s | 21 | |
| 1960s | 49 | |
| 1970s | 63 | |
| 1980s | 51 | |
| 1990s | 64 | |
| 2000s | 44 | |
| 2010s | 54 | |
| 2020s | 20 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 60.7°F | 38.1°F | 49.4°F | 4.55 in | — | 10 |
| February | 64.0°F | 40.4°F | 52.2°F | 4.27 in | — | 10 |
| March | 68.1°F | 42.6°F | 55.3°F | 2.59 in | — | 8 |
| April | 71.9°F | 44.5°F | 58.2°F | 1.30 in | — | 5 |
| May | 77.3°F | 49.0°F | 63.1°F | 0.56 in | — | 3 |
| June | 82.8°F | 51.6°F | 67.2°F | 0.15 in | — | 1 |
| July | 87.2°F | 54.0°F | 70.6°F | 0.00 in | — | 0 |
| August | 87.2°F | 54.4°F | 70.8°F | 0.03 in | — | 0 |
| September | 84.9°F | 52.5°F | 68.7°F | 0.04 in | — | 1 |
| October | 78.8°F | 47.9°F | 63.4°F | 0.85 in | — | 3 |
| November | 68.3°F | 41.6°F | 55.0°F | 1.74 in | — | 6 |
| December | 60.4°F | 37.0°F | 48.7°F | 3.69 in | — | 9 |
Climate twins of Gilroy
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).