Climate Insights for Bellevue

The climate in Bellevue is temperate. The average annual temperature is 11°C and approximately 938mm of precipitation falls per year. Maggio is the wettest month, receiving around 156mm of rainfall. Bellevue is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Giugno, Agosto. The coldest months are Gennaio, Febbraio, Dicembre, when temperatures can drop to -7°C. Snowfall occurs from January to December, with around 50cm accumulating over the season.

Bellevue has a wide annual temperature range, spanning 37°C from the coldest to warmest months. The warmest month is Luglio, when average highs reach 30°C and the mean temperature sits around 25°C. The coldest month is Gennaio, when overnight lows fall to -7°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Bellevue is a moderately rainy area, receiving approximately 938mm of precipitation annually, which averages out to around 78mm per month. The wettest month is May, averaging 156mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 28mm. That's 128mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 50cm accumulating over the season. January typically sees the most snow at around 16cm.

Bellevue is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 22km/h in winter, 24km/h in spring, 19km/h in summer, 22km/h in autumn.

It is currently winter in Bellevue, which began on December 21, 2026. Bellevue is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in Luglio at around 30°C, while the coldest stretch bottoms out in Gennaio near -7°C. Spring is next, beginning on March 20, 2026 — 2 days from now.

The best time to visit Bellevue is during Luglio and Settembre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 87mm per month. By contrast, Gennaio can be quite cold with temperatures dropping to -7°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Bellevue based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.