Climate Insights for Atchison

The climate in Atchison is temperate. The average annual temperature is 14°C and approximately 1045mm of precipitation falls per year. May is the wettest month, receiving around 203mm of rainfall. Atchison is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are December, January, February, when temperatures can drop to -5°C. Light snow can occur between January and December.

Atchison has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is June, when average highs reach 33°C and the mean temperature sits around 27°C. The coldest month is December, when overnight lows fall to -5°C and the daily average is -1°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 12°C shift in average temperatures.

Atchison is a moderately rainy area, receiving approximately 1045mm of precipitation annually, which averages out to around 87mm per month. The wettest month is May, averaging 203mm of rainfall. July and August also tend to see above-average precipitation. The driest month is January, with just 20mm. That's 183mm less than May, 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. Light snowfall can occur between January and December, totalling around 22cm annually. December is the snowiest month with approximately 8cm.

Atchison 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 April, averaging 5km/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. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

It is currently summer in Atchison, which began on June 21, 2026. Atchison 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 June at around 33°C, while the coldest stretch bottoms out in December near -5°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Atchison is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 92mm per month. By contrast, June can be uncomfortably hot with highs reaching 33°C, while December is the coldest period with lows dropping to -5°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 Atchison 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.