Weather in California: Based on NeemTime research
Weather Overview of California
California has one of the most diverse climates in the United States, due to its vast size and geographical variety. It ranges from Mediterranean in the coastal regions, desert in the southeast, alpine in the mountains, and continental in the interior valleys. Generally, California enjoys warm, dry summers and mild, wet winters, especially in the coastal and southern regions. However, Northern California and mountainous areas experience more distinct seasonal changes with cooler temperatures and snowfall in winter.
Weather Seasons of California
Spring (March to May): Mild and pleasant across much of the state. Wildflowers bloom, especially in southern and central regions. Temperatures gradually warm, and rainfall tapers off.
Summer (June to August): Hot and dry in the interior and desert areas, with coastal regions experiencing milder conditions. Northern California and mountainous areas are warm and sunny, perfect for outdoor adventures.
Autumn (September to November): Warm and dry, especially early in the season. Temperatures gradually decrease, and rain begins to return by late October or November.
Winter (December to February): Mild and rainy in Southern California and along the coast, colder and often snowy in the Sierra Nevada and other mountain regions. Northern California experiences cooler temperatures and more frequent rainfall.
Month with the Highest Temperature of California
July is typically the hottest month in California. Interior areas like Death Valley and the Central Valley can experience extreme heat, with temperatures often exceeding 38°C (100°F). Coastal cities like Los Angeles and San Diego remain milder, usually in the 24–30°C (75–86°F) range.
Month with the Lowest Temperature of California
December or January are usually the coldest months, depending on the region. Mountainous areas can experience sub-zero temperatures with heavy snowfall, while coastal cities tend to stay relatively mild, averaging around 8–15°C (46–59°F).
January Weather of California
January brings cool to mild weather across the state. In coastal areas like Los Angeles and San Diego, temperatures range from 8°C to 19°C (46°F to 66°F) with some rain. Northern cities like Sacramento and San Francisco are cooler, with daytime highs around 12–16°C (54–61°F). Mountain areas, such as Lake Tahoe, are cold and snowy, perfect for winter sports.
February Weather of California
February continues the winter season with similar conditions to January. Coastal regions remain mild with temperatures ranging between 9°C and 20°C (48°F to 68°F), while the north and higher elevations stay cool and wet. This month often sees some of the highest rainfall amounts, especially in Northern California. Snowfall continues in the Sierra Nevada, supporting skiing and snowboarding activities.
March Weather of California
March brings the onset of spring. Temperatures begin to rise, especially in Southern California, where averages range from 10°C to 22°C (50°F to 72°F). Rainfall decreases gradually, and wildflowers begin to bloom in places like the Antelope Valley and deserts. Northern California is still cool and wet but begins to see more sunny days.
April Weather of California
April is a pleasant month across California. Southern and central regions experience mild and dry conditions, with temperatures ranging from 12°C to 24°C (54°F to 75°F). Rain becomes infrequent, and outdoor activities like hiking and beach trips become popular. Northern areas warm slightly and begin to dry out, while snow remains in the higher mountain elevations.
May Weather of California
May brings warm and sunny weather to most parts of California. In coastal regions like Los Angeles and San Diego, temperatures range from 14°C to 24°C (57°F to 75°F). The inland valleys and deserts begin to heat up, reaching 30°C (86°F) or higher in some areas. Rainfall is minimal, and wildflowers are still in bloom in many parts. It’s an excellent month for hiking, sightseeing, and beach outings.
June Weather of California
June signals the start of summer with dry and warm conditions. Coastal areas experience temperatures from 16°C to 26°C (61°F to 79°F). Inland and desert areas like Palm Springs and Death Valley can reach well above 35°C (95°F). June Gloom (morning marine layer) may affect coastal areas early in the month. It’s a great time for outdoor festivals and coastal travel before peak summer heat arrives inland.
July Weather of California
July is typically the hottest month of the year. Inland areas like the Central Valley and deserts can see daytime highs exceeding 40°C (104°F). Coastal cities remain more temperate, averaging 18°C to 28°C (64°F to 82°F). Rain is very rare across most of the state. Beaches, national parks, and mountain resorts are all popular destinations during this hot and dry period.
August Weather of California
August continues the intense summer heat in much of the state. Deserts and valleys remain extremely hot, with highs often above 38°C (100°F). Coastal areas are pleasant, ranging from 18°C to 29°C (64°F to 84°F). Wildfire risk is elevated due to the dry conditions. However, the clear skies and consistent sunshine make it ideal for summer travel and outdoor recreation.
September Weather of California
September is a transition month, especially in Southern California, where it can still feel like summer. Coastal areas are warm, with highs around 25–30°C (77–86°F), while inland regions stay hot, often exceeding 35°C (95°F). Rain remains scarce, and wildfire risk is still high. It’s a great time for travel due to smaller crowds and pleasant weather.
October Weather of California
October brings cooler temperatures and the start of autumn, particularly in Northern California. Inland highs average around 25°C (77°F), while coastal areas range from 14°C to 24°C (57°F to 75°F). Rainfall begins to return, especially in the north. Fall foliage starts to appear in the mountains and wine country, making it a scenic time for travel.
November Weather of California
November ushers in cooler temperatures and more frequent rainfall, particularly in Northern California. Coastal temperatures hover between 10°C and 20°C (50°F to 68°F). Inland regions are cooler but still mild. In the Sierra Nevada, the first significant snowfalls may begin. It’s a quieter time for tourism, and perfect for exploring cities, parks, and vineyards.
December Weather of California
December is part of California’s winter season. Coastal cities like Los Angeles see mild conditions, with temperatures around 9°C to 20°C (48°F to 68°F). Northern and inland areas are cooler, with more rain. Mountain regions receive snow, opening ski resorts. The holiday season lights up the cities, and the cool, crisp air makes it a festive time to visit.