Atwater, California, is a city located in Merced County, in the heart of California’s San Joaquin Valley. It is situated approximately 8 miles northwest of Merced and about 60 miles southeast of Modesto. Atwater covers an area of 6.14 square miles and is known for its agricultural roots, as well as its proximity to key transportation routes, such as State Route 99.
As of the latest census, Atwater has a population of around 30,000 residents. The city is affiliated with the United States and boasts a rich cultural heritage influenced by its diverse population. The area is characterized by its flat terrain and fertile soil, making it an ideal location for farming and agricultural businesses.
One of the city’s notable companies is Castle Air Museum, which showcases a wide array of military aircraft. Atwater is also home to the Castle Commerce Center, a significant industrial and business hub. While there are no major universities within the city itself, nearby Merced is home to the University of California, Merced, a prominent institution that draws students and visitors to the region.
Climate and Weather Overview
Atwater, California, experiences a Mediterranean climate characterized by hot, dry summers and mild, wet winters. The city enjoys abundant sunshine throughout the year, making it an attractive destination for outdoor activities. The average annual temperature is around 65°F (18°C), with average highs reaching up to 95°F (35°C) during the summer months and lows dropping to around 38°F (3°C) in the winter.
The following table provides a detailed breakdown of Atwater’s average monthly temperature, precipitation, and the number of sunny days:
| Month | Avg. Temperature (°F) | Avg. Precipitation (in) | Avg. Sunny Days |
|---|---|---|---|
| January | 45 | 2.00 | 10 |
| February | 50 | 2.20 | 9 |
| March | 55 | 1.80 | 11 |
| April | 60 | 1.00 | 13 |
| May | 68 | 0.50 | 14 |
| June | 75 | 0.10 | 15 |
| July | 80 | 0.00 | 16 |
| August | 78 | 0.00 | 15 |
| September | 75 | 0.20 | 14 |
| October | 65 | 0.80 | 12 |
| November | 55 | 1.50 | 10 |
| December | 48 | 1.80 | 9 |
Weather by Month
January
January in Atwater is the coldest month, with average temperatures around 45°F. The city receives about 2 inches of rainfall, making it one of the wetter months of the year. While snow is rare, frost can occasionally occur in the early mornings. Outdoor activities such as hiking and biking are popular, provided visitors dress warmly. The Castle Air Museum is a great indoor activity to explore aviation history.
February
February continues the trend of cool weather with average temperatures rising slightly to 50°F. The month sees similar precipitation levels as January, with about 2.2 inches of rain. This period is ideal for visiting local parks and enjoying the early bloom of spring flowers. The city’s mild climate allows for year-round golfing at the Rancho Del Rey Golf Club.
March
In March, temperatures begin to rise, averaging around 55°F. Rainfall decreases to about 1.8 inches. The pleasant weather makes it an ideal time for outdoor activities, including visits to nearby vineyards and orchards. The blooming almond trees in the surrounding countryside provide a stunning backdrop for photography enthusiasts.
April
April brings warmer weather with average temperatures reaching 60°F. Rainfall decreases further to around 1 inch. This month is perfect for exploring local nature trails and enjoying outdoor picnics. The annual Atwater Fourth of July celebration planning begins, and visitors can explore the community’s preparations for this major event.
May
May sees a significant increase in temperature, averaging 68°F. Rainfall is minimal, with only about 0.5 inches. The weather is ideal for outdoor festivals, farmers’ markets, and visiting the Castle Air Museum’s special events. The dry, warm days are perfect for exploring the city’s parks and recreational areas.
June
June ushers in the hot summer season with average temperatures around 75°F. Rain is scarce, with only about 0.1 inches recorded. The long sunny days are perfect for water-related activities at local lakes and rivers. The annual Castle Air Museum Open Cockpit Day is a highlight event, offering a unique opportunity to view aircraft interiors.
July
July is the hottest month in Atwater, with average temperatures reaching 80°F. The city experiences almost no rainfall. The warm weather encourages residents and visitors to partake in outdoor activities such as barbecues, swimming, and attending the Fourth of July festivities. The Atwater Summer Concert Series is a popular local event.
August
August continues to be hot, with average temperatures around 78°F. There is virtually no rainfall during this month. The dry, warm conditions are perfect for late summer activities, including visiting local farmers’ markets and enjoying fresh produce. The Castle Air Museum continues to be a popular attraction, offering educational tours.
September
In September, temperatures begin to cool slightly, averaging 75°F. The month sees a slight increase in rainfall, with about 0.2 inches. This is a great time for outdoor sports and attending local events such as the annual Atwater Fall Festival. The weather is also ideal for exploring nearby natural attractions, including Yosemite National Park.
October
October brings cooler temperatures, averaging 65°F. Rainfall increases to around 0.8 inches. The fall season is perfect for visiting local pumpkin patches and enjoying Halloween festivities. The cooler weather is also ideal for hiking and exploring the beautiful fall foliage in the surrounding areas.
November
November sees further cooling with average temperatures around 55°F. Rainfall increases to 1.5 inches. This month marks the beginning of the holiday season, with various events and activities, including the Atwater Christmas Parade. The mild weather is perfect for shopping at local markets and enjoying seasonal treats.
December
December is a cool and relatively wet month, with average temperatures around 48°F and 1.8 inches of rainfall. The city’s holiday decorations and events create a festive atmosphere. Visitors can enjoy ice skating at the local rink and exploring holiday light displays. Indoor activities such as visiting the Castle Air Museum are also popular during this time.