Climate Insights for Johnson Airport

The climate in Johnson Airport is cool. The average annual temperature is 5°C and approximately 667mm of precipitation falls per year. June is the wettest month, receiving around 119mm of rainfall. Johnson Airport 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 -17°C. Snowfall occurs from January to December, with around 144cm accumulating over the season.

Johnson Airport has a wide annual temperature range, spanning 44°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 21°C. January brings the harshest conditions, with lows dropping to -17°C and an average temperature of -13°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 9°C shift in average temperatures.

Johnson Airport is a relatively dry area, receiving approximately 667mm of precipitation annually, which averages out to around 56mm per month. The wettest month is June, averaging 119mm of rainfall. September and July also tend to see above-average precipitation. The driest month is January, with just 23mm. That's 96mm less than June, 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 144cm accumulating over the season. December typically sees the most snow at around 35cm.

Johnson Airport is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, 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 summer in Johnson Airport, which began on June 21, 2026. Johnson Airport 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 27°C, while the coldest stretch bottoms out in January near -17°C. Autumn is next, beginning on September 23, 2026 — 94 days from now.

The best time to visit Johnson Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 78mm per month. By contrast, January can be quite cold with temperatures dropping to -17°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 Johnson Airport 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.