Fontana

Find out what the weather is like now in Fontana and check out the latest forecasts to plan your perfect trip across the USA.

The climate in Fontana, located in California, is Mediterranean. This means travelers can expect plenty of sunny days and the pleasant weather predictability characteristic of the southern regions of the USA. The city is situated about 377 meters above sea level, which helps create stable atmospheric conditions without sudden changes.

Two main seasons are clearly defined throughout the year: a long, hot, dry summer and a mild, moderately rainy winter. August is traditionally the sunniest month, with the sky remaining cloudless almost every day. Low humidity during the summer makes even high temperatures quite comfortable for walking and outdoor activities.

The overall characteristic of the local climate is its exceptional hospitality for tourists. Thanks to the large number of clear days and the absence of extreme cold, the city remains an attractive destination year-round, offering stable conditions for visiting sights and parks.

The temperature in Fontana is characterized by pronounced seasonal changes and significant daily fluctuations. July and August are the hottest months: during this period, daytime highs often reach +34°C...+35°C. The sweltering nature of the Californian summer is tempered by low humidity; however, it is best to spend midday hours in the shade.

The winter period is very mild. In December, January, and February, average daytime temperatures stay around +16°C...+17°C. Even in the coldest months, the thermometer rarely drops to critical levels, making winter in this part of the USA feel like a long European spring.

One of the key features of the local climate is the temperature swing between day and night. In the summer months, the difference can be up to 16 degrees: after the daytime heat, the night air cools down to a pleasant +19°C. Transitional seasons like April and October offer the most balanced conditions with daytime temperatures around +22°C...+26°C.

Precipitation in Fontana is distributed very unevenly, which is typical for arid areas of California. The summer months—June, July, and August—are characterized by an almost complete absence of rain. During this time, nature takes a break from moisture, and tourists can completely ignore umbrellas while enjoying consistently clear weather.

The bulk of the moisture falls during the winter and spring, starting in December and ending in March. February and March are considered the wettest months, when total precipitation reaches its peak (about 95–99 mm). During this time, it can rain up to 13 days a month, but it is rarely prolonged, usually alternating with clear skies.

Snow in the city itself is extremely unlikely due to the mild climate and positive temperatures. In autumn, starting in October, the chance of precipitation gradually increases, but the number of rainy days remains low. This makes Fontana a great place for those who prefer dry air and plenty of sunlight at any time of year.

When planning a trip to Fontana in the summer (June to September), your wardrobe should be based on light clothing made from natural fabrics: shorts, t-shirts, and summer dresses. Because of the intense sun, be sure to bring sunscreen with a high SPF, quality sunglasses, and a hat. For evening walks, when the temperature can drop to +19°C, a light sweater will come in handy.

In winter and spring (November to March), it's best to follow the principle of layering. Jeans and a long-sleeve shirt may be enough during the day, but a sweater or windbreaker will be needed for cool mornings and evenings. Given that most of the annual precipitation occurs during this period, don't forget to bring a compact umbrella or raincoat.

Year-round, you will need comfortable walking shoes for visiting the city and its surroundings. Due to the dry climate, it's also helpful to always have a bottle of water with you. If you're planning a trip in April, pack a light jacket—the daytime weather is already warm, reaching +22°C, but evenings can still be brisk.