Climate Insights for Johnson

The climate in Johnson is temperate. The average annual temperature is 14°C and approximately 427mm of precipitation falls per year. April is the wettest month, receiving around 70mm of rainfall. Johnson is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are December, January, February, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 58cm accumulating over the season.

Johnson has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 35°C and the mean temperature sits around 27°C. The coldest month is December, when overnight lows fall to -4°C and the daily average is 2°C. On average, daily temperatures fluctuate by about 15°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Johnson is a relatively dry area, receiving approximately 427mm of precipitation annually, which averages out to around 36mm per month. The wettest month is April, averaging 70mm of rainfall. May and August also tend to see above-average precipitation. The driest month is November, with just 10mm. That's 60mm less than April, 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 58cm accumulating over the season. April typically sees the most snow at around 16cm.

Johnson is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 4km/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, which began on June 21, 2026. Johnson 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 35°C, while the coldest stretch bottoms out in December near -4°C. Autumn is next, beginning on September 23, 2026 — 94 days from now.

The best time to visit Johnson is during May, June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 50mm per month. By contrast, July can be uncomfortably hot with highs reaching 35°C, while December is the coldest period with lows dropping to -4°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Johnson 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.