Temperature
Hot by day, mild at night.
Atchison is most comfortable in spring and autumn. Summers are hot and winters are cold. The wettest months are roughly April to July.

Hot by day, mild at night.
Moderate rain risk across the month.
Plenty of sun this month.
Hot days, with humid stretches.
In August, afternoons feel about 87° and nights feel near 72°.
Partly cloudy across the month.
August late afternoons are around 85°F, easing to about 82°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Atchison with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology