Climate and monthly weather forecast
Atchison, KS

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The climate of Atchison

Atchison, Kansas, USA is characterized by a Humid continental climate, with no dry season and hot summers, classified as Dfa in the Köppen climate classification. Situated in the north-eastern Kansas, Atchison sits on the border of two climatic zones, thus experiencing an intriguing interplay of weather patterns throughout the year.

Temperature fluctuations are a frequent occurrence, with a substantial difference observed from the lowest readings in winter, close to 21.2°F (-6°C), to the peak values in summer around 86.4°F (30.2°C). Humidity remains relatively constant during the year, hovering near 74% in January and dropping slightly to 72% in April and March. Yet, an observable elevation is visible, peaking at 78% in May and June.

Precipitation in Atchison varies, with rainfall recorded every month. A noticeable increase is disclosed from the start of the year; 0.79" (20mm) in January, going up to 3.58" (91mm) in May. Likely due to warming temperatures, snowfall decreases from 2.28" (58mm) in January to non-existent levels from June to September, only to pick up again from October.

A distinguishing quality of Atchison's climate could be the sustained daylight hours into summer, with June topping at 14.9 hours. While July shares the maximum average of 10.3 sunshine hours with June, there are more sunshine days reported in November; 22.1. Athinson experiences a moderate UV Index, fluctuating from 2 in cooler months to 6 in warmer months.

The best time to visit Atchison

From late spring to early autumn, between May and September, makes for an excellent time for visiting Atchison. Temperatures are warm yet comfortable, ranging from 72.5°F (22.5°C) in May to the peak of 86.4°F (30.2°C) in July. Humidity levels remain relatively stable, with slight increases noticed in the middle of this period.

Rainfall is a highlight; peaking at 3.58" (91mm) in May and plateauing at a slightly lesser 3.15" (80mm) in July. Nonetheless, it offers a refreshing balance to the warming weather. Sunshine hours average a high of 10.3 in July, accompanied by longer daylight hours; a rewarding ingredient for sightseeing and outdoor activities.

The worst time to visit Atchison

Months from late autumn into early winter, between November and February stand least preferred for visiting Atchison. During this period, temperatures dip sharply from 51.6°F (10.9°C) in November to a minimum of 21.2°F (-6°C) in January. Snowfall tends to surge from 0.55" (14mm) in November to 2.28" (58mm) in January, paired with the shortest daylight hours at 9.8 in January, leading to harsh climatic conditions unsuitable for tourism.

Spring weather in Atchison

Spring in Atchison, from March to May, delineates a pleasant climate. Temperatures escalate steadily, from 53.2°F (11.8°C) in March to 72.5°F (22.5°C) in May. Precipitation levels reach their highest in May, offering 3.58" (91mm) of rainfall. Daylight hours extend up to roughly 14.4 hours in May, granting extended opportunities for outdoor enjoyment.

Summer weather in Atchison

Summer reigns from June to August in Atchison. This season displays high temperatures, reaching up to 86.4°F (30.2°C) in July. Precipitation remains consistent, with rainfall hovering around 3.07" (78mm) in June and reducing slightly by August. The favorable mutation of daylight, sunshine hours, and average temperatures make it the optimal season for outdoor activities.

Autumn weather in Atchison

Autumn in Atchison, spanning from September to November, showcases temperatures dipping from 78.3°F (25.7°C) to 51.6°F (10.9°C), providing a soothing relief after the summer's heat. Rainfall sees a consistent decrease during fall, going down to the year's low of 0.91" (23mm) in November. Daylight hours reduce gradually, signaling the season's changing dynamics.

Winter weather in Atchison

Winter in Atchison, from December through February, is brisk and chilly with a pronounced drop in temperatures to 21.2°F (-6°C) in January. Snowfall typically peaks in January with 2.28" (58mm). The limited daylight hours, which dip to a yearly low of 9.4 hours in December, couple with the cold to create a less hospitable environment for outdoor activities.

Weather in January

Exhibiting a chilly demeanor, January in Atchison, Kansas kicks off the year with predominantly freezing temperatures. From the lowest to the highest, the temperature range stays within 21.2°F (-6°C) and 36°F (2.2°C), indicating the arrival of a frigid Kansas winter. Weather in January »

Weather in February

As winter progresses, the slightly warmer but still freezing weather in February continues to paint Atchison, Kansas with a typically cold picture. Notable is the marginal increase in ever-present snowfall, accumulating 2.56" (65mm) this month. Weather in February »

Weather in March

March in Atchison, Kansas, is characterized by a transition from frosty winter to the beginnings of spring, offering more pleasant weather. The winter snow tends to recede, totaling just 0.87" (22mm), paving way for slightly warmer temperatures. Weather in March »

Weather in April

April showers bring May flowers, and this phrase aptly describes Atchison, Kansas's weather in this month. The rainfall peaks at 2.4" (61mm), indicating the city's shift into the full bloom of springtime. Nature lovers find great joy in exploring the blossoming colors brought about by the spring season, with the warming temperatures making outdoor excursions more inviting. Weather in April »

Weather in May

In May, the weather in Atchison, Kansas, typically shows the full arrival of spring, characterized by pleasant temperatures and lush landscapes. Rainfall measures at its peak, reaching 3.58" (91mm), ensuring abundant greenery in the region. Weather in May »

Weather in June

June in Atchison, Kansas, exhibits the region's arrival into the full swing of summer, with the weather defined by heat and humidity. The highest temperature clocks in at 83.5°F (28.6°C), making it the hottest month thus far in the year. Weather in June »

Weather in July

July is the pinnacle of the summer season in Atchison, Kansas, highlighted by soaring temperatures and lengthy daylight hours. With its highest temperature touching 86.4°F (30.2°C), it firmly takes the title as the hottest month of the year. Weather in July »

Weather in August

August weather in Atchison, Kansas, continues the summer's heat but shows the first signs of an approaching fall. It records the lowest wind speed at 6.6mph (10.6km/h) which brings stillness, typifying the dog days of summer. The slightly shortened daylight hours serve as a subtle reminder of the approaching change of season. Weather in August »

Weather in September

September in Atchison, Kansas, sees the charm of fall begin to unfold, bringing a moderate change in the city's weather. The lack of snowfall, combined with the decrease in daylight hours, signals the slow retirement of summer. Weather in September »

Weather in October

October in Atchison, Kansas, is the heart of the fall season, characterized by cooling temperatures and a regular rainfall pattern. The landscape transforms as leaves turn a array of vibrant colors, drawing tourists and locals outdoors to admire the display. Weather in October »

Weather in November

November weather in Atchison, Kansas, is a prelude to winter, with the fall's vibrant hues gradually giving way to a muted palette. Notably, the first measurable snowfall of 0.55" (14mm) records this month, reminding locals of the winter looming just around the corner. Weather in November »

Weather in December

Atchison, Kansas, ends the year wrapped in the cold embrace of winter with December weather reporting primarily freezing temperatures. The city records a significant increase in snowfall accumulation, reaching 1.1" (28mm), painting landscapes in a serene coat of white. Weather in December »
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

Atchison's coldest month, January, registers temperatures that range from a high of 36°F (2.2°C) to a low of 21.2°F (-6°C).

What is the driest month?

January is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.79" (20mm) of precipitation.

How many days does it rain?

In Atchison, during the entire year, the rain falls for 125.3 days and collects up to 23.94" (608mm) of precipitation.

When does it snow?

January through May, October through December are months with snowfall.

How many days does it snow?

Throughout the year, there are 19.9 snowfall days, and 7.87" (200mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 5.1h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the snowiest month?

The month with the most snowfall is February, when snow falls for 5.7 days and typically aggregates up to 2.56" (65mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What are the most humid months?

The months with the highest humidity in Atchison are May and June, with an average relative humidity of 78%.

What is the wettest month?

The month with the most rainfall is May, when the rain falls for 15.9 days and typically aggregates up to 3.58" (91mm) of precipitation.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

When it does not snow?

In Atchison, snow does not fall in June through September.

When are the longest days?

June has the longest days of the year in Atchison, with an average of 14h and 54min of daylight.

What are the months with the most sunshine?

The months with the most sunshine are June and July, with an average of 10.3h of sunshine.

What are the warmest months?

July, marked by an average high-temperature of 86.4°F (30.2°C) and a low-temperature of 68.2°F (20.1°C), is the warmest month.

What are the least humid months?

The months with the lowest humidity are October and November, with an average relative humidity of 69%.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

Average temperature
Atchison, KS

Average temperature - Atchison, KS

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36°F).

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure
Atchison, KS

Average pressure - Atchison, KS

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed
Atchison, KS

Average wind speed - Atchison, KS

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity
Atchison, KS

Average humidity - Atchison, KS

The months with the highest relative humidity are May and June (78%).
The months with the lowest relative humidity are October and November (69%).

Average rainfall
Atchison, KS

Average rainfall - Atchison, KS

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days
Atchison, KS

Average rainfall days - Atchison, KS

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.7 days).

Average snowfall
Atchison, KS

Average snowfall - Atchison, KS

The month with the highest snowfall is February (2.56").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Atchison, KS

Average snowfall days - Atchison, KS

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Atchison, KS

Average daylight / Average sunshine - Atchison, KS

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days
Atchison, KS

Average sunshine days - Atchison, KS

The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (12.6 days).

Average UV index
Atchison, KS

Average UV index - Atchison, KS

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Atchison, KS

Average visibility - Atchison, KS

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Atchison, Kansas, USA

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