Climate Insights for Heyburn

The climate in Heyburn is temperate. The average annual temperature is 11°C and approximately 383mm of precipitation falls per year. January is the wettest month, receiving around 52mm of rainfall. Heyburn 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 December, January, February, when temperatures can drop to -5°C. Snowfall occurs from January to December, with around 107cm accumulating over the season.

Heyburn has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 34°C and the mean temperature sits around 25°C. The coldest month is December, when overnight lows fall to -5°C and the daily average is -2°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Heyburn is a quite dry location, receiving approximately 383mm of precipitation annually, which averages out to around 32mm per month. The wettest month is January, averaging 52mm of rainfall. March and May also tend to see above-average precipitation. The driest month is July, with just 5mm. That's 47mm 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 107cm accumulating over the season. January typically sees the most snow at around 33cm.

Heyburn 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 April, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently spring in Heyburn, which began on March 20, 2026. Heyburn 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 34°C, while the coldest stretch bottoms out in December near -5°C. Summer is next, beginning on June 21, 2026 — 3 days from now.

The best time to visit Heyburn is during June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 17mm per month. By contrast, July can be uncomfortably hot with highs reaching 34°C, while December is the coldest period with lows dropping to -5°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Heyburn 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.