Santa Clara, California, boasts a climate that appeals to those who enjoy warm, sunny days nearly year-round.
The summers are long, warm, and clear, making it perfect for outdoor enthusiasts.
Temperatures during this season regularly hover between 70 to 85 degrees Fahrenheit, perfect for enjoying the area’s parks and recreational activities.
The winters, in contrast, are short, cold, and partly cloudy.
Despite the chillier weather, temperatures rarely drop below the mid-40s Fahrenheit, and the city averages only 15 inches of rain annually.
With no snowfall, Santa Clara’s winter climate remains relatively mild compared to other parts of the country.
Even in the colder months, there is usually enough sunshine to enjoy outdoor pursuits.
Whether it’s hiking or simply relaxing in one of the city’s many green spaces, Santa Clara’s temperate weather provides a comfortable environment year-round.
For a detailed look at Santa Clara’s climate data, visit Climate and Average Weather Year Round in Santa Clara.
Average Temperature In Santa Clara, California
Santa Clara, California, enjoys a mild climate year-round. The temperatures vary slightly by season, offering warm summers and cool winters.
January: January is the coldest month, with average lows of 49.9°F. The highs are around 60°F.
July: July, a summer month, sees average temperatures ranging from 58°F during the cool mornings to highs of 83°F in the afternoons. The warm weather makes it a popular time for outdoor activities.
September: September is the warmest month, where the average temperature can reach 68.2°F. During this month, high temperatures can rise above 80°F, making it the peak of summer warmth.
Below is a table showcasing average monthly temperatures:
| Month | Average Low (°F) | Average High (°F) |
|---|---|---|
| January | 49.9 | 60 |
| April | 53 | 72 |
| July | 58 | 83 |
| September | 68.2 | 81 |
| December | 54 | 64 |
The variation in temperatures in Santa Clara is moderate.
Cooler months like January and December can drop to around 50°F at night, while summer months can occasionally reach highs over 80°F.
The warmest water temperatures are found in September, further contributing to the pleasant conditions typical of this month.
This range of temperatures makes Santa Clara a desirable place to live or visit, offering a comfortable climate for most of the year.
Average Precipitation In Santa Clara, California
Santa Clara, California experiences varying amounts of precipitation throughout the year. The climate is influenced by seasonal patterns, including periods of rainfall and minimal snow.
Average Rainfall In Santa Clara, California
Santa Clara receives most of its rain during the colder months, particularly from November through March. The city has an average annual rainfall of approximately 26.2 inches. The month of January typically records the highest rainfall.
Spring and summer are much drier, with July and August being the driest months.
Rainfall in these months is minimal, averaging about 0.04 inches.
This seasonal distribution means that Santa Clara’s weather can vary widely depending on the time of year.
For more details, refer to the rainfall data, which highlights the average monthly precipitation over a 30-year period.
Average Snow In Santa Clara, California
Snowfall is rare in Santa Clara, given its relatively mild winter temperatures. The region does not typically see snow accumulations because temperatures rarely drop low enough.
While snow and ice can be a significant weather factor in other parts of the country, Santa Clara’s location and climate reduce the likelihood of such events.
The rarity of snow makes Santa Clara more predictable in terms of winter weather, focusing more on rainfall than snow.
Average Sun In Santa Clara, California
Santa Clara, California enjoys a dry and sunny climate with plenty of daily sunshine throughout the year. Solar energy measurements reveal valuable insights into the region’s sunny days.
Average Daily Shortwave Solar Energy In Santa Clara, California
Santa Clara experiences high levels of sunshine, contributing significantly to daily shortwave solar energy.
Shortwave solar energy measures the amount of sunlight reaching the Earth’s surface.
In Santa Clara, average daily shortwave solar energy peaks in summer, particularly in July.
During this month, it averages around 8.5 kWh per square meter.
Winter months see a decline, dropping to around 3.5 kWh per square meter in December.
These measurements highlight the area’s suitability for solar energy projects.
The dry climate further ensures fewer cloudy days, making Santa Clara an ideal location for harnessing solar energy.
Average Humidity In Santa Clara, California
Santa Clara experiences varying levels of humidity throughout the year.
January is the most humid month, with an average relative humidity of 80%. In contrast, October has the lowest average relative humidity at 71%.
The annual average relative humidity in Santa Clara is roughly 75% overall.
Here’s a quick look at the relative humidity for different months:
| Month | Relative Humidity (%) |
|---|---|
| January | 80 |
| October | 71 |
| Yearly Average | 75 |
Humidity levels in Santa Clara can affect comfort and can feel quite different depending on the time of year.
The higher humidity levels in winter may make it feel cooler, while the lower levels in summer can make the heat more bearable.
For more details, you can explore humidity data at World Weather & Climate Information.
Average Wind In Santa Clara, California
Santa Clara experiences moderate wind patterns throughout the year.
In June, the windiest month, average wind speed reaches 8.3 mph. By contrast, October has the lowest average wind speed at 6.2 mph.
For much of the year, from mid-August to mid-March, the area experiences relatively calm conditions.
The calmest periods coincide with times when the polar jet stream moves further north. This reduces the west winds coming from the Gulf of Alaska.
Typical Monthly Wind Speeds:
- January: 7.5 mph
- June: 8.3 mph
- August: 7.2 mph
- October: 6.2 mph
Wind patterns play a significant role in shaping the climate in Santa Clara.
Average Air Quality In Santa Clara, California
The air quality in Santa Clara is generally good. The Air Quality Index (AQI) frequently indicates “Good” levels, meaning the air poses little or no risk.
Historical Data
From 1999 to recent years, there has been steady improvement in particulate matter (PM2.5) levels.
The three-year annual average for PM2.5 decreased from 14.2 µg/m³ to 10.9 µg/m³, showing about a 4 percent improvement per year.
Current Conditions
Real-time data shows that Santa Clara’s air quality remains good most of the time.
This makes it a healthier place to live and work. Weather conditions like temperature, humidity, and pressure can affect air quality here.
Weather Impact
- Temperature: Often mild, ranging between 50.0°F and 75.0°F
- Humidity: Generally moderate, contributing to better air quality
- Pressure: Averages around 29.92 inches of mercury, or slightly varied, impacting pollutant dispersion
Tools and Resources
For more detailed, real-time air quality data, residents and visitors can consult platforms like IQAir and AccuWeather.
These provide up-to-date information and forecasts to help plan activities.
Recommendations
On rare occasions when air quality dips due to weather or other factors, staying indoors and using air purifiers can help reduce exposure to pollutants.
Topography of Santa Clara, California
Santa Clara, California, is situated in the heart of Silicon Valley. The city’s topography is a mix of flat valley floors and rolling hills. The Santa Clara Valley lies between the Santa Cruz Mountains to the west and the Diablo Range to the east.
Elevation: The city’s elevation ranges from about 20 feet above sea level in the lower areas to around 200 feet in the foothills. Average elevation is about 323 feet.
Mountain Ranges: The Santa Cruz Mountains, located to the west, influence the local climate and provide a scenic backdrop.
These mountains also help capture moisture, affecting rainfall distribution across the region.
Rivers and Water Supply: The Guadalupe River and Coyote Creek are the main waterways in the area.
They play a critical role in the local water supply and are essential for irrigation and flood control.
Silicon Valley: Santa Clara is part of the larger Silicon Valley region, known for its tech industry.
The region’s flat terrain has made it ideal for urban development, including the San Jose International Airport, which lies at an elevation of approximately 62 feet.
Sea Level: Santa Clara’s proximity to the coast means parts of the city are only a few feet above sea level, making it vulnerable to flooding during extreme weather events.
Extreme Weather Events That Occur In Santa Clara, California
Winter Storms
Winter storms in Santa Clara can bring heavy rain, strong winds, and cooler temperatures.
Rainfall during these storms can contribute to flooding, especially in low-lying areas.
The average temperature during winter storms often ranges between 40°F and 60°F.
Flooding
Flooding is a significant risk in Santa Clara, particularly during the rainy season.
Heavy rainfall can lead to waterlogged streets and overflowing rivers. Areas near streams or rivers are especially vulnerable.
On average, Santa Clara receives about 15 inches of rain annually.
Loma Prieta Earthquake
Though not a weather event, the Loma Prieta earthquake of 1989 had a profound impact on Santa Clara.
Measuring 6.9 on the Richter scale, it caused severe damage and highlighted the region’s vulnerability to seismic activity.
The event serves as a reminder of the potential for natural disasters in the area.
Extreme Heat
Santa Clara also faces extreme heat events, especially during the summer.
Temperatures can soar above 90°F, posing health risks such as heatstroke.
Prolonged heat can also exacerbate drought conditions, affecting water supply and agricultural activities.
Learn more about extreme heat and heat waves in Santa Clara.
Best Time Of The Year To Visit Santa Clara, California
The best time to visit Santa Clara is from mid-June to late September when the weather is warm and ideal for outdoor activities. Each season brings unique weather patterns and experiences.
What Is Santa Clara, California Like In Spring
In spring, Santa Clara begins to warm up. March sees average highs around 67°F and lows around 46°F.
By May, temperatures rise to around 75°F during the day.
Rainfall is moderate, typically around 2 inches in March and tapering off to about 0.6 inches in May.
This makes spring a great time for visiting parks and enjoying the city’s blooming flowers.
Light jackets are recommended for cooler mornings and evenings.
What Is Santa Clara, California Like In Summer
Summer is the warmest season in Santa Clara. June through August features average highs ranging from 80°F to 84°F.
Nights are cooler, with lows typically around 56°F.
Precipitation is quite low, making it an ideal season for outdoor fun.
Sunscreen, hats, and hydration are essential as the sun can be quite strong.
The long, sunny days make this time perfect for visiting theme parks, hiking, and other outdoor activities.
What Is Santa Clara, California Like In Fall
Fall brings slightly cooler weather, with September highs around 80°F dropping to about 67°F by November.
Nighttime temperatures fall to between 55°F and 46°F.
Rain starts to increase, especially in November with averages around 1.7 inches.
Light sweaters and umbrellas might be necessary.
Autumn’s mild temperatures make it a good time for enjoying wine tours and exploring the changing foliage in local parks.
What Is Santa Clara, California Like In Winter
Winter is the coolest season. December and January have average high temperatures around 58°F and lows around 42°F.
Rainfall is more frequent, averaging about 2.7 inches in both December and January.
Despite the cooler weather, the area rarely experiences frost or snow.
Warm clothing is recommended, especially for evening activities.
Winter remains a good time to visit museums and indoor attractions without the crowds seen in other seasons.