Santa Clara County Climate and Average Weather
Climate of Santa Clara County: average temperatures, rainfall and seasons month by month.
Climate in Santa Clara County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 60° | 43° | 2,9 in | ★★★☆☆ |
| February | 62° | 45° | 5,7 in | ★★★☆☆ |
| March | 68° | 48° | 2,5 in | ★★★★☆ |
| April | 70° | 50° | 1,8 in | ★★★★☆ |
| May | 77° | 54° | 0,5 in | ★★★★★ |
| June | 83° | 57° | 0,0 in | ★★★★★ |
| July | 84° | 59° | 0,0 in | ★★★★★ |
| August | 85° | 60° | 0,0 in | ★★★★★ |
| September | 83° | 59° | 0,1 in | ★★★★★ |
| October | 78° | 56° | 0,6 in | ★★★★★ |
| November | 66° | 48° | 3,2 in | ★★★★☆ |
| December | 60° | 46° | 4,6 in | ★★★☆☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Recent extremes in Santa Clara County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Santa Clara County compares with nearby places
Annual averages, and the difference against Santa Clara County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| San Francisco International Airport | 30 mi | 58°F | 36°F cooler | 24 in |
| Mission District | 38 mi | 57°F | 36°F cooler | 25 in |
| Area Code 415 | 39 mi | 57°F | 36°F cooler | 25 in |
| San Francisco County | 39 mi | 57°F | 36°F cooler | 25 in |
| San Francisco | 39 mi | 57°F | 36°F cooler | 25 in |
Best time to visit Santa Clara County
Go in May, June, July, August, September and October. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What this means for Santa Clara County
Today is about average for August. The forecast high of 86°F is in line with the 85°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 52°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Santa Clara County is a county in California. Santa Clara County is a county in the United States. It has a population of about 1.9 million.
Right now it is 68°F (20°C) in Santa Clara County with partly cloudy. It feels like 67°F. Today runs from 59°F to 86°F. Chance of precipitation is 0%. Sightseeing conditions score 9.7/10 - excellent - go now.
The best time to visit Santa Clara County is May, June, July, August, September and October. The climate is Mediterranean. January, February and December tend to be the least comfortable months. August is the warmest month with average highs near 85°F, while January is the coldest with lows near 43°F.
The closest major airport is San Francisco International Airport (SFO), about 30 mi away. Nearby highlights include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve and Pinnacles National Park.
In plain terms. Today is about average for August. The forecast high of 86°F is in line with the 85°F typical for this month. The best window to be outside is roughly 9 AM to 12 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in Santa Clara County today at 9.7/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Santa Clara County
| Type | County |
|---|---|
| State | California |
| Country | United States |
| Continent | North America |
| Coordinates | 37°21′14.8″N 121°57′18.7″W (37.3541, -121.9552) |
| Population | 1.900.000 |
| Local time | 8:09 AM (UTC-07:00) |
| Best months | May, June, July, August, September and October |
| Climate | Mediterranean |
Weather map for Santa Clara County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Santa Clara County
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Santa Clara County?
Santa Clara County is a county in California. Its coordinates are 37.3541, -121.9552. It lies in North America.
What is the weather like in Santa Clara County right now?
It is currently 68°F (20°C) with partly cloudy. Humidity is 67% and wind is 6 mph.
When is the best time to visit Santa Clara County?
May, June, July, August, September and October offer the most comfortable conditions in Santa Clara County, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Santa Clara County in?
Santa Clara County observes America/Los_Angeles (UTC-07:00). The local time is 8:09 AM.
How many people live in Santa Clara County?
Santa Clara County has a population of approximately 1.9 million.
What is the nearest airport to Santa Clara County?
The closest airports are San Francisco International Airport (SFO), 30 mi away and Los Angeles International Airport (LAX), 309 mi away.
What are the top things to do in Santa Clara County?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Pinnacles National Park, Julia Pfeiffer Burns State Park and Half Dome.
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| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 8:09 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
