Climate Insights for Atchison

The climate in Atchison is temperate. The average annual temperature is 13°C and approximately 1011mm of precipitation falls per year. Atchison receives a notable amount of rainfall throughout the year, including during its driest month. Atchison 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 January, February, December, when temperatures can drop to -5°C. Snowfall occurs from January to December, with around 52cm accumulating over the season.

Atchison has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is -2°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Atchison is a moderately rainy area, receiving approximately 1011mm of precipitation annually, which averages out to around 84mm per month. The wettest month is May, averaging 178mm of rainfall. August and April also tend to see above-average precipitation. The driest month is February, with just 31mm. That's 146mm 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. Snowfall is a regular feature from January to December, with around 52cm accumulating over the season. January typically sees the most snow at around 22cm.

Atchison is mildly breezy, with an average annual wind speed of 13km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 14km/h in winter, 15km/h in spring, 11km/h in summer, 13km/h in autumn.

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 July at around 31°C, while the coldest stretch bottoms out in January near -5°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Atchison is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 67mm per month. By contrast, July can be uncomfortably hot with highs reaching 31°C, while January is the coldest period with lows dropping to -5°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 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.