Climate Insights for Summerville

The climate in Summerville is cool. The average annual temperature is 8°C and approximately 1,163 mm of precipitation falls per year. Summerville receives a notable amount of rainfall throughout the year, including during its driest month. Summerville 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 February, January, December, when temperatures can drop to -8°C. Summerville experiences heavy snowfall, typically from January through December.The climate in Summerville is cool. The average annual temperature is 46°F and approximately 45.8 in of precipitation falls per year. Summerville receives a notable amount of rainfall throughout the year, including during its driest month. Summerville 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 February, January, December, when temperatures can drop to 18°F. Summerville experiences heavy snowfall, typically from January through December.

Temperatures in Summerville vary considerably across the year, with a 33°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 25°C with a mean of 20°C. The coldest month is February, when overnight lows fall to -8°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.Temperatures in Summerville vary considerably across the year, with a 59°F difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 77°F with a mean of 68°F. The coldest month is February, when overnight lows fall to 18°F and the daily average is 25°F. On average, daily temperatures fluctuate by about 15°F between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 11°F shift in average temperatures.

Summerville is a moderately rainy area, receiving approximately 1,163 mm of precipitation annually, which averages out to around 97 mm per month. The wettest month is November, averaging 116 mm of rainfall. January and December also tend to see above-average precipitation. The driest month is May, with just 79 mm. That's 37 mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Summerville receives heavy snowfall, accumulating around 225cm annually from January through December. The snowiest month is January, with approximately 59cm. Winter travel should account for significant snow cover.Summerville is a moderately rainy area, receiving approximately 45.8 in of precipitation annually, which averages out to around 3.8 in per month. The wettest month is November, averaging 4.6 in of rainfall. January and December also tend to see above-average precipitation. The driest month is May, with just 3.1 in. That's 1.5 in less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Summerville receives heavy snowfall, accumulating around 89in annually from January through December. The snowiest month is January, with approximately 23in. Winter travel should account for significant snow cover.

Summerville is mildly breezy, with an average annual wind speed of 14km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/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 15km/h in winter, 14km/h in spring, 11km/h in summer, 14km/h in autumn.Summerville is moderately windy, with an average annual wind speed of 8mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 10mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 7mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph 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 10mph in winter, 9mph in spring, 7mph in summer, 8mph in autumn.

The best time to visit Summerville is during 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 84 mm per month. By contrast, February can be quite cold with temperatures dropping to -8°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 best time to visit Summerville is during July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 65°F with modest rainfall averaging 3.3 in per month. By contrast, February can be quite cold with temperatures dropping to 18°F. 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 Summerville 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.The table below shows monthly climate averages for Summerville based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.