Climate Insights for Greenville

The climate in Greenville is cool. The average annual temperature is 6°C and approximately 1138mm of precipitation falls per year. Greenville receives a notable amount of rainfall throughout the year, including during its driest month. Greenville 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, February, December, when temperatures can drop to -12°C. Greenville experiences heavy snowfall, typically from January through December.

Greenville has a wide annual temperature range, spanning 37°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 25°C with a mean of 20°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -9°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 8°C shift in average temperatures.

Greenville is a moderately rainy area, receiving approximately 1138mm of precipitation annually, which averages out to around 95mm per month. The wettest month is December, averaging 119mm of rainfall. October and June also tend to see above-average precipitation. The driest month is February, with just 71mm. That's 48mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Greenville receives heavy snowfall, accumulating around 209cm annually from January through December. The snowiest month is January, with approximately 46cm. Winter travel should account for significant snow cover.

Greenville is mildly breezy, with an average annual wind speed of 17km/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 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h 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 19km/h in winter, 19km/h in spring, 15km/h in summer, 17km/h in autumn.

It is currently spring in Greenville, which began on March 20, 2026. Greenville 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 25°C, while the coldest stretch bottoms out in January near -12°C. Summer is next, beginning on June 21, 2026 — 83 days from now.

The best time to visit Greenville is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 98mm per month. By contrast, January can be quite cold with temperatures dropping to -12°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 Greenville 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.