Atchison, United States experiences average highs of 19°C (66°F) and lows of 9°C (48°F) throughout the year. Rainfall is moderate, averaging about 8 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have cooled by 0.9°C (1.6°F) across the available records.
Atchison, United States Weather & Climate 2026
Monthly climate averages for Atchison, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.7/10
Best: May, June, August, September
UV Index
5
Low
Temperature 19°C / 9°C
Feels Like 18°C / 7°C
Rainy Days 8
Rainfall 83 mm
Sunshine 9 h
Humidity 66%
Wind Speed 20 km/h
Dew Point 8°C
Snow Days 3 days
Frost Days 12 days
Hottest Month
31°C
July
Avg Low22°C
Rain9days
Coldest Month
-5°C
January
Avg High3°C
Rain7days
Driest Month
5days
February
Avg High7°C
Avg Low-4°C
Windiest Month
24 km/h
April (Gusts 49)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures.
Sun Position
Sunrise 05:54
Daylight 14.9h
Sunset 20:51
Live conditions—
Atchison on the map · live conditions
Atchison, United States
- Continent
- Americas
- Country
- United States
- City
- Atchison
- Population
- 10.7K
- Elevation
- 248 m
- Coordinates
- 39.56°, -95.12°
Seasonal Breakdown
Spring
Mar–May
Avg High 19°C
Avg Low 8°C
Rain 11 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 31°C
Avg Low 21°C
Rain 9 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 20°C
Avg Low 11°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low -4°C
Rain 6 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 3°C / -5°C . Feb: 7°C / -4°C . Mar: 14°C / 3°C . Apr: 19°C / 8°C . May: 24°C / 14°C . Jun: 30°C / 20°C . Jul: 31°C / 22°C . Aug: 30°C / 21°C . Sep: 28°C / 18°C . Oct: 21°C / 11°C . Nov: 13°C / 3°C . Dec: 7°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 45 mm. Feb: 30 mm. Mar: 78 mm. Apr: 101 mm. May: 176 mm. Jun: 96 mm. Jul: 100 mm. Aug: 111 mm. Sep: 66 mm. Oct: 97 mm. Nov: 58 mm. Dec: 40 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 64%. Mar: 64%. Apr: 61%. May: 69%. Jun: 66%. Jul: 69%. Aug: 70%. Sep: 66%. Oct: 62%. Nov: 67%. Dec: 68%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 23 km/h . Apr: 24 km/h . May: 20 km/h . Jun: 18 km/h . Jul: 16 km/h . Aug: 16 km/h . Sep: 17 km/h . Oct: 21 km/h . Nov: 20 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 8h. Mar: 8h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 8h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 6 days. Feb: 6 days. Mar: 2 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 2 days. Dec: 3 days.
Climate Trends
Average highs have cooled by 0.9°C (1.6°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 31°C |
| Coldest month | Jan 2025 · -9°C | Jan · -5°C |
| Wettest month | Jul 2025 · 168 mm | May · 176 mm |
| Windiest month | Mar 2025 · 25 km/h | Apr · 24 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June best
Excellent July
Fair August best
Good September best
Excellent October
Good November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 3°C / -5°C | -1°C / -10°C | 7days (45 mm) Good | 6.2h Fair | 71% Muggy | 2.9 Moderate | Poor | View Details |
| February | 7°C / -4°C | 3°C / -9°C | 5days (30 mm) Good | 7.7h Good | 64% Muggy | 4 Moderate | Poor | View Details |
| March | 14°C / 3°C | 11°C / -1°C | 9days (78 mm) Wet | 7.8h Good | 64% Muggy | 5.1 High | Fair | View Details |
| April | 19°C / 8°C | 17°C / 4°C | 9days (101 mm) Wet | 9.4h Good | 61% Muggy | 6.1 High | Good | View Details |
| May best | 24°C / 14°C | 24°C / 13°C | 14days (176 mm) Wet | 9.7h Good | 69% Muggy | 7.1 Very High | Excellent | View Details |
| June best | 30°C / 20°C | 33°C / 21°C | 9days (96 mm) Wet | 12.1h Excellent | 66% Muggy | 7.7 Very High | Excellent | View Details |
| July | 31°C / 22°C | 35°C / 24°C | 9days (100 mm) Wet | 12.1h Excellent | 69% Muggy | 7.7 Very High | Fair | View Details |
| August best | 30°C / 21°C | 33°C / 23°C | 10days (111 mm) Wet | 11.3h Excellent | 70% Muggy | 7 High | Good | View Details |
| September best | 28°C / 18°C | 29°C / 18°C | 7days (66 mm) Good | 10h Excellent | 66% Muggy | 5.9 High | Excellent | View Details |
| October | 21°C / 11°C | 19°C / 8°C | 8days (97 mm) Wet | 8.2h Good | 62% Muggy | 4.4 Moderate | Good | View Details |
| November | 13°C / 3°C | 9°C / 0°C | 6days (58 mm) Good | 7h Good | 67% Muggy | 3 Moderate | Fair | View Details |
| December | 7°C / -2°C | 3°C / -6°C | 5days (40 mm) Good | 6.4h Fair | 68% Muggy | 2.4 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Atchison are May, June, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Atchison, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Atchison is July, with average daytime highs of 31°C (89°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Atchison is January, with average overnight lows of -5°C (22°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Atchison is May, averaging 176mm of precipitation across 14 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Atchison runs through May, August, with the heaviest rainfall in May. Based on 10-year averages for Atchison.
Atchison receives approximately 108 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Atchison.
The least favorable months to visit Atchison are January, February, December, primarily due to very cold temperatures. For the best conditions, consider May, June, August, September instead.
The annual average UV index in Atchison is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Atchison is 66%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Atchison receives snow. Months with snowfall average 3 snow days and 5 cm (2 in) of accumulation, with about 12 frost days during winter.
Average wind speeds in Atchison are 20 km/h (12 mph). The windiest month is April with peak winds reaching 24 km/h (15 mph) (gusts up to 49 km/h / 30 mph).
Atchison averages 7 clear-sky days per month with overall cloud cover around 51%. The clearest skies occur in September.
The annual average dew point in Atchison is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Atchison has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Atchison ranges from 7°C (45°F) to 18°C (64°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Atchison. It earns a climate score of 7.7/10 with Excellent.
For June in Atchison, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 30°C (87°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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