Fairfield, California, has a fascinating climate that appeals to many looking for pleasant weather year-round. The summers are long, warm, and mostly clear, making it an excellent destination for outdoor activities.
On the other hand, winters are short, cold, and wet, adding a bit of variety to the weather patterns.
Throughout the year, Fairfield experiences around 25 inches of rain, which is significantly less than the US average of 38 inches. Interestingly, it rarely snows in this region, maintaining 0 inches of snowfall yearly.
The average temperatures range from 48.7°F to 73.2°F, providing comfortable conditions for most of the year.
For more detailed information on the monthly temperature and rainfall, you can visit climate data specialists at U.S. Climate Data or explore the detailed averages at WeatherSpark.
Average Temperature in Fairfield, California
Fairfield, California experiences a variety of temperatures throughout the year.
During the hot season, which lasts from June to early October, the average high temperature often exceeds 80°F. The hottest month is July, with an average high of 86°F and a low around 58°F.
In contrast, the cool season spans from late November to mid-February. During this period, daily high temperatures are generally below 61°F.
The coldest month is typically January, where temperatures often drop to an average low of around 40°F.
Here’s a quick overview of average monthly temperatures:
| Month | Average High (°F) | Average Low (°F) |
|---|---|---|
| January | 55 | 40 |
| February | 60 | 42 |
| March | 65 | 45 |
| April | 70 | 48 |
| May | 75 | 52 |
| June | 83 | 57 |
| July | 86 | 58 |
| August | 85 | 59 |
| September | 82 | 57 |
| October | 74 | 51 |
| November | 64 | 44 |
| December | 55 | 40 |
During the hottest days, temperatures can occasionally reach up to 90°F or more. On the cooler end, winter nights can see temperatures dipping slightly below 40°F.
Average Precipitation in Fairfield, California
Fairfield, California, experiences moderate precipitation throughout the year. This includes both rain and snow, although snow is very rare. Understanding these patterns helps residents prepare for seasonal weather changes.
Average Rainfall in Fairfield, California
Fairfield receives an average of 25 inches of rain per year.
Rainfall is not evenly distributed across the months. December typically has the highest precipitation with about 3.7 inches of rainfall, making it the wettest month.
The dry season occurs from May to September. During these months, Fairfield experiences significantly less rainfall. July is usually the driest month with almost no rain.
Rainy days in Fairfield are more frequent during the winter months. In February, rainfall averages 2.4 inches, with rain falling for approximately 9 days.
This steady rainfall pattern helps maintain the local climate, supporting the native flora and fauna.
Average Snow in Fairfield, California
Fairfield averages 0 inches of snow per year. The mild climate of this region means that snow is almost non-existent. Winters are cool, but not cold enough to produce snowfall, with the cool season lasting from late November to mid-February.
Residents may experience occasional frost, but snow and ice are extremely rare.
The mild temperatures and low elevation contribute to this lack of snowfall, which is a common characteristic of many areas in California’s coastal and valley regions.
Average Sun in Fairfield, California
Fairfield, California experiences varied sun patterns throughout the year, with notable changes in sunshine hours. The sun’s intensity and the length of days also vary, affecting daily activities and lifestyle.
Average Daily Shortwave Solar Energy in Fairfield, California
Fairfield enjoys plenty of sunshine, contributing to high levels of daily solar energy. The sun’s strength peaks during summer, especially in July, when daylight hours are longer, reaching nearly 14 hours.
On the other hand, winter months see shorter days and less intense sunlight.
In terms of UV index, summer months often have a high UV index, necessitating sun protection.
The longest days occur in June, providing Fairfield with ample sunlight. Conversely, December has the shortest days, reducing solar energy. This fluctuation impacts everything from agricultural cycles to recreational activities.
Average Humidity in Fairfield, California
Fairfield, California experiences varying levels of humidity throughout the year. The average annual percentage of humidity is around 66%.
During the winter months, particularly in December, the atmosphere tends to be the most humid. December has an average humidity level of 83%.
In contrast, July is the least humid month. During this summer month, the relative humidity drops to about 53%.
| Month | Average Humidity (%) |
|---|---|
| December | 83.0% |
| July | 53.0% |
These fluctuations in humidity are typical in Fairfield due to the region’s Mediterranean climate, characterized by dry summers and wetter winters. Throughout the year, residents and visitors can expect a moderate range in humidity levels.
Average Wind in Fairfield, California
Fairfield, California experiences varying wind speeds throughout the year. Most of the wind comes from the west and northwest.
The average wind speed in Fairfield is around 11 miles per hour.
Summer months tend to be a bit windier, with speeds reaching up to 12 mph. This is typical during the warmer months when the temperature rises.
In contrast, the wind during the cooler months, especially from November to February, averages about 9 mph. These months experience less wind, often due to the reduced temperature variations.
Monthly Average Wind Speeds:
- January: 9 mph
- April: 10 mph
- July: 12 mph
- October: 10 mph
The combination of temperature and wind patterns makes the weather unpredictable at times. It is beneficial for residents and visitors to be aware of these patterns, especially if they are engaging in outdoor activities.
Average Air Quality in Fairfield, California
Fairfield, California experiences a mix of air quality levels throughout the year. Most days, the air quality is considered good. The Air Quality Index (AQI) often lands in the “Good” category, below 50, which indicates that air pollution poses little or no risk.
On days when air quality falls below this range, it might reach “Moderate” levels.
For example, Fairfield’s real-time AQI sometimes measures around 24, which signals a good level with PM2.5 at 8 µg/m³ and PM10 at 15 µg/m³.
For visibility, most days in Fairfield have clear skies. During poor air quality days, visibility can drop, affecting outdoor activities. The number of these poor air quality days is significant, highlighting an area of concern.
Fairfield fares better than many cities in California, but nearby San Jose suffers from worse air quality. Despite this, some neighborhoods in Downtown Fairfield still face extreme risks concerning air quality, with an AQI over 100.
- Good AQI (0-50): Safe for everyone
- Moderate AQI (51-100): Acceptable air quality, some pollutants may be a concern for very sensitive individuals
- Poor AQI (>100): Potential health effects for sensitive groups
The city’s air quality data can be further explored using detailed maps and forecasts available on various platforms.
For instance, you can find more information on the Fairfield Air Quality Index.
Monitoring these levels is crucial for those with respiratory conditions, ensuring that Fairfield residents can plan their outdoor activities carefully.
Topography of Fairfield, California
Fairfield, California, is nestled in the heart of Solano County. It sits at an elevation of about 13 feet above sea level.
To the west, Fairfield is bordered by the coastal mountains. These hills provide a picturesque backdrop.
To the east, the terrain flattens out, transitioning to the Central Valley. This region is known for its agricultural lands.
Fairfield’s topography includes several small hills and valleys. These features create a varied landscape.
- Elevation: 13 feet above sea level
- West: Coastal mountains
- East: Central Valley
The Suisun Marsh lies to the south of Fairfield. It is one of the largest marshes in California and provides rich biodiversity.
Several creeks traverse Fairfield, including Union Creek and Laurel Creek. These waterways contribute to the area’s natural beauty.
The topography influences the climate. The coastal mountains provide some shelter from ocean winds, leading to warmer summers.
Extreme Weather Events that Occur in Fairfield, California
Fairfield, California experiences a variety of extreme weather events. Understanding these events is important for residents and visitors alike.
Heat Waves
Heat waves are common in Fairfield, especially during the summer.
Temperatures can soar as high as 100°F, posing risks of heat exhaustion and heat stroke.
The city is expected to face increasing extreme heat in the coming decades due to climate change.
Drought
Fairfield often deals with drought conditions. Summers are typically dry, and the lack of rainfall can cause water shortages.
The climate is described as hot and arid during the summer months, with very little precipitation.
Heavy Rainfall
During the winter months, heavy rainfall can occur.
The annual precipitation is projected to increase slightly, which means storms could become more intense.
Extreme precipitation can lead to flooding and other water-related hazards.
Hailstorms
Hail is less common but can happen during thunderstorms.
Hailstones can cause damage to property, vehicles, and crops. Residents need to be aware of weather forecasts to protect their assets from such events.
Freezing Temperatures
Winters are typically mild; however, temperatures can occasionally drop to freezing levels. This can result in frost, which may affect local agriculture and gardening.
It is important to cover sensitive plants and take precautions to prevent frostbite during these times.
Fairfield’s diverse weather patterns require preparedness to mitigate the risks associated with these extreme weather events.
Best Time of the Year to Visit Fairfield, California
Fairfield, California offers something for everyone during each season. The best times to visit tend to be in the spring and fall due to the pleasant weather and fewer crowds.
What is Fairfield, California Like in Spring
In the spring, Fairfield enjoys mild temperatures ranging from the mid-50s to mid-70s°F. March, April, and May are particularly pleasant months, with less rain compared to winter.
April and May usually have fewer rainy days, making them ideal for outdoor activities like hiking or visiting local vineyards.
Daylight saving time begins in March, providing longer daylight hours which are perfect for exploring the area.
Visitors often appreciate the blooming flowers and green landscapes, offering great photo opportunities.
What is Fairfield, California Like in Summer
Summer in Fairfield spans from June to August, with average high temperatures ranging from 80°F to 90°F. July is the hottest month, often reaching highs of 86°F.
Night temperatures can dip to around 58°F, providing a welcome reprieve from the daytime heat.
Expect very little rain during these months, making it a great time for outdoor festivals and events.
However, the intense heat may be a downside for some visitors. If you prefer warm, sunny days and lots of sun, summer is an excellent time to visit.
What is Fairfield, California Like in Fall
Fall brings comfortable temperatures that gradually cool down from an average high in the mid-80s°F in September to mid-60s°F by November. October is especially noted for having pleasant and mild weather.
Rainfall begins to increase by late November, but early fall remains relatively dry.
Fall is another excellent time for outdoor activities and sightseeing, thanks to the welcoming weather.
The grape harvest season also makes fall an attractive time for wine enthusiasts to visit local wineries.
What is Fairfield, California Like in Winter
Winter in Fairfield is the wettest season, especially from December through February.
January and February tend to have the most rainfall, with February seeing about 2.4 inches of rain on average.
Despite the rain, the temperatures remain fairly mild, usually ranging from the mid-40s°F to low 60s°F.
Snow is rare, making Fairfield accessible even in the winter.
The season is also quieter in terms of tourism, offering a more relaxed experience without the crowds.
For those who enjoy cooler weather and don’t mind a bit of rain, winter can be a pleasant time to explore the area.