Climate and monthly weather forecast
Atlantic, IA

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Weather in January

January, the same as December, in Atlantic, Iowa, is a freezing cold winter month, with an average temperature varying between 28.4°F (-2°C) and 15.1°F (-9.4°C). With average high temperatures of 28.4°F (-2°C) and lows of 15.1°F (-9.4°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Atlantic, is an icy month, with an average temperature varying between 18.1°F (-7.7°C) and 32°F (0°C). Atlantic's February average high-temperature settles at a cold 32°F (0°C), showing a near match with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Atlantic, is a frosty month, with an average temperature varying between 47.8°F (8.8°C) and 32.5°F (0.3°C). The shift from February to March sees a distinct increase in the average high-temperature, escalating from an icy 32°F (0°C) to a frosty 47.8°F (8.8°C). Weather in March »

Weather in April

April in Atlantic, Iowa, is a mild spring month, with an average temperature ranging between max 59.5°F (15.3°C) and min 42.4°F (5.8°C). The arrival of April sees a shift in the average high-temperature, moving from a chilly 47.8°F (8.8°C) in March to a mild 59.5°F (15.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Atlantic, Iowa, with an average temperature ranging between max 69.6°F (20.9°C) and min 52.9°F (11.6°C). A shift in the average high-temperature is noticeable in May, changing from a refreshing 59.5°F (15.3°C) in April to a pleasant 69.6°F (20.9°C). Weather in May »

Weather in June

June, the first month of the summer in Atlantic, is a moderately hot month, with an average temperature varying between 63.1°F (17.3°C) and 79.9°F (26.6°C). The arrival of June sees a shift in the average high-temperature, moving from an agreeable 69.6°F (20.9°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »

Weather in July

July, like June, in Atlantic, Iowa, is another warm summer month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 65.1°F (18.4°C). Atlantic's July weather, with an average high temperature of 82.6°F (28.1°C) and an average low temperature of 65.1°F (18.4°C), tends to be the warmest of the year. During July, the heat index is appraised at a tropical 89.6°F (32°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Atlantic, Iowa, with an average temperature varying between 81.1°F (27.3°C) and 62.2°F (16.8°C). Entering August, Atlantic's average high-temperature reads a still warm 81.1°F (27.3°C), indicating a close resemblance to the previous month's climate. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Atlantic, Iowa, with an average temperature ranging between max 75°F (23.9°C) and min 55.9°F (13.3°C). The start of September comes with a small reduction in the average high-temperature, subtly receding from 81.1°F (27.3°C) in August to a still moderately hot 75°F (23.9°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Atlantic, Iowa, with an average temperature varying between 43.7°F (6.5°C) and 60.4°F (15.8°C). Atlantic's October weather is marked by a distinct drop in high-temperatures, declining from a warm 75°F (23.9°C) in September to a moderate 60.4°F (15.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Atlantic, Iowa, with an average temperature varying between 32.4°F (0.2°C) and 47.1°F (8.4°C). The transition into November is accompanied by a temperature decrease, with the average high-temperature shifting from a mild 60.4°F (15.8°C) in October to a chilly 47.1°F (8.4°C). Weather in November »

Weather in December

December, the first month of the winter in Atlantic, is also an icy month, with an average temperature ranging between min 21°F (-6.1°C) and max 33.4°F (0.8°C). Atlantic's transition into December involves a shift in temperature, receding from a chilly 47.1°F (8.4°C) in November to a wintry 33.4°F (0.8°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Atlantic?

The coldest period in Atlantic, Iowa, is January, when temperatures fluctuate between an average high of 28.4°F (-2°C) and a low of 15.1°F (-9.4°C).

What is the most humid month in Atlantic?

With an average relative humidity of 82%, January is the most humid month in Atlantic, Iowa.

What is the driest month in Atlantic?

The month with the least rainfall in Atlantic, Iowa, is January, when the rain falls for 3.8 days and typically collects 0.59" (15mm) of precipitation.

How many days does it rain in Atlantic?

In Atlantic, Iowa, during the entire year, the rain falls for 118.7 days and collects up to 20.79" (528mm) of precipitation.

When does it snow in Atlantic?

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

How many days does it snow in Atlantic?

Throughout the year, in Atlantic, Iowa, there are 32.3 snowfall days, and 9.41" (239mm) of snow is accumulated.

What is the month with the least sunshine in Atlantic?

The month with the least sunshine in Atlantic is January, with an average of 4.5h of sunshine.

What are the months with the lowest UV index in Atlantic?

The months with the lowest UV index in Atlantic, Iowa, are January, February, October through December, with an average maximum UV index of 2.

When does it snow the most in Atlantic?

February is the month with the most snowfall. Snow falls for 7.7 days and accumulates 2.36" (60mm) of snow.

When is Daylight Saving Time (DST) in Atlantic?

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 is the rainiest month in Atlantic?

June is the month with the most rainfall in Atlantic, Iowa. Rain falls for 16.4 days and accumulates 3.7" (94mm) of precipitation.

When it does not snow in Atlantic?

June through September are months without snowfall.

When are the longest days in Atlantic?

The month with the longest days is June, with an average of 15h and 6min of daylight.

What are the months with the highest UV index in Atlantic?

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

What is the hottest time of year in Atlantic?

July is the month that records the highest temperatures in Atlantic, with averages ranging from a high of 82.6°F (28.1°C) to a low of 65.1°F (18.4°C).

What month has the most sunshine in Atlantic?

July has the most sunshine of the year in Atlantic, with an average of 10.4h of sunshine.

What is the least humid month in Atlantic?

The least humid month in Atlantic, Iowa, is October, with an average relative humidity of 69%.

What is the month with the shortest days in Atlantic?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

Average temperature
Atlantic, IA

Average temperature - Atlantic, IA

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (28.4°F).

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure
Atlantic, IA

Average pressure - Atlantic, IA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed
Atlantic, IA

Average wind speed - Atlantic, IA

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average rainfall
Atlantic, IA

Average rainfall - Atlantic, IA

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days
Atlantic, IA

Average rainfall days - Atlantic, IA

The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (3.1 days).

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Average snowfall
Atlantic, IA

Average snowfall - Atlantic, IA

The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Atlantic, IA

Average snowfall days - Atlantic, IA

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Atlantic, IA

Average daylight / Average sunshine - Atlantic, IA

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days
Atlantic, IA

Average sunshine days - Atlantic, IA

The month with the most sunshine days is December (21.2 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index
Atlantic, IA

Average UV index - Atlantic, IA

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

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Average visibility
Atlantic, IA

Average visibility - Atlantic, IA

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).

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Atlantic, Iowa, USA

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