Climate Insights for Lafayette

The climate in Lafayette is temperate. The average annual temperature is 11°C and approximately 1403mm of precipitation falls per year. January is the wettest month, receiving around 223mm of rainfall. Lafayette is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are December, February, January, when temperatures can drop to 2°C. Snowfall occurs from January to December, with around 53cm accumulating over the season.

Temperatures in Lafayette vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 20°C. December is the coolest month, with minimum temperatures around 2°C and an average of 4°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Lafayette is a fairly wet location, receiving approximately 1403mm of precipitation annually, which averages out to around 117mm per month. The wettest month is January, averaging 223mm of rainfall. December and November also tend to see above-average precipitation. The driest month is August, with just 8mm. That's 216mm less than January, 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 53cm accumulating over the season. February typically sees the most snow at around 21cm.

Lafayette is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

It is currently summer in Lafayette, which began on June 21, 2026. Lafayette 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 August at around 29°C, while the coldest stretch bottoms out in December near 2°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Lafayette is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 32mm per month. By contrast, December can be quite cold with temperatures dropping to 2°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Lafayette 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.