Climate Insights for Lyons

The climate in Lyons is warm and mild. The average annual temperature is 20°C and approximately 1061mm of precipitation falls per year. Lyons receives a notable amount of rainfall throughout the year, including during its driest month. Lyons is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 6°C.

Temperatures in Lyons vary considerably across the year, with a 29°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 35°C and an average of 29°C. January is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Lyons is a moderately rainy area, receiving approximately 1061mm of precipitation annually, which averages out to around 88mm per month. The wettest month is December, averaging 138mm of rainfall. August and June also tend to see above-average precipitation. The driest month is November, with just 48mm. That's 90mm less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Lyons is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Lyons, which began on June 21, 2026. Lyons 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 July at around 35°C, while the coldest stretch bottoms out in January near 6°C. Autumn is next, beginning on September 23, 2026 — 83 days from now.

The best time to visit Lyons is during March, April, May, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 73mm per month. By contrast, July can be uncomfortably hot with highs reaching 35°C, while January is the coldest period with lows dropping to 6°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 Lyons 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. 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.