Climate Insights for Greenbriar

The climate in Greenbriar is temperate. The average annual temperature is 15°C and approximately 1253mm of precipitation falls per year. Greenbriar receives a notable amount of rainfall throughout the year, including during its driest month. Greenbriar 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 -1°C. Light snow can occur between January and December.

Temperatures in Greenbriar vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 32°C and the mean temperature sits around 27°C. The coldest month is January, when overnight lows fall to -1°C and the daily average is 3°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 7°C shift in average temperatures.

Greenbriar is a fairly wet location, receiving approximately 1253mm of precipitation annually, which averages out to around 104mm per month. The wettest month is May, averaging 139mm of rainfall. July and August also tend to see above-average precipitation. The driest month is March, with just 75mm. That's 64mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 46cm annually. January is the snowiest month with approximately 22cm.

Greenbriar 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 spring in Greenbriar, which began on March 20, 2026. Greenbriar 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 32°C, while the coldest stretch bottoms out in January near -1°C. Summer is next, beginning on June 21, 2026 — 7 days from now.

The best time to visit Greenbriar is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 96mm per month. By contrast, July can be uncomfortably hot with highs reaching 32°C, while January is the coldest period with lows dropping to -1°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 Greenbriar 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.