Climate and monthly weather forecast
Onawa Junction, IA

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Weather in January

January, like December, is a freezing cold winter month in Onawa Junction, Iowa, with an average temperature ranging between min 12°F (-11.1°C) and max 24.4°F (-4.2°C). January brings the lowest temperatures, with an average high of 24.4°F (-4.2°C) and an average low of 12°F (-11.1°C). Weather in January »

Weather in February

February, the last month of the winter in Onawa Junction, is another freezing cold month, with an average temperature varying between 15.3°F (-9.3°C) and 28.2°F (-2.1°C). February's arrival brings an average high-temperature of a still subzero cold 28.2°F (-2.1°C), slightly deviating from January's 24.4°F (-4.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Onawa Junction, Iowa, with an average temperature ranging between min 29.7°F (-1.3°C) and max 44.2°F (6.8°C). The shift into March is characterized by a noticeable escalation in the average high-temperature, rising from February's freezing cold 28.2°F (-2.1°C) to a chilly 44.2°F (6.8°C). Weather in March »

Weather in April

April is a refreshing spring month in Onawa Junction, Iowa, with temperature in the range of an average high of 56.8°F (13.8°C) and an average low of 40.3°F (4.6°C). The beginning of April marks a shift in the average high-temperature, moving from March's frosty 44.2°F (6.8°C) to a refreshing 56.8°F (13.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Onawa Junction, Iowa, with temperature in the range of an average low of 52.2°F (11.2°C) and an average high of 68.5°F (20.3°C). May brings an increase in the average high-temperature, progressing from a refreshing 56.8°F (13.8°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »

Weather in June

June, the first month of the summer in Onawa Junction, is a moderately hot month, with an average temperature varying between 77.9°F (25.5°C) and 62.1°F (16.7°C). June brings an increase in the average high-temperature, progressing from a pleasant 68.5°F (20.3°C) in May to a moderately hot 77.9°F (25.5°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Onawa Junction, Iowa, with an average temperature ranging between min 64°F (17.8°C) and max 81.5°F (27.5°C). July is the month that records the highest temperatures, with averages ranging from a high of 81.5°F (27.5°C) to a low of 64°F (17.8°C). The heat index in July is computed to be a hot 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Onawa Junction, Iowa, with an average temperature ranging between max 79.3°F (26.3°C) and min 60.8°F (16°C). August commences with an average high-temperature of a still moderately hot 79.3°F (26.3°C), showing little deviation from July's 81.5°F (27.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Onawa Junction, is still a warm month, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 73.8°F (23.2°C). September signifies a gentle decline in Onawa Junction's average high-temperature, easing from a warm 79.3°F (26.3°C) in August to a still moderately hot 73.8°F (23.2°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Onawa Junction, Iowa, with an average temperature ranging between min 43°F (6.1°C) and max 57.9°F (14.4°C). Onawa Junction witnesses a significant decrease in the average high-temperature with the arrival of October, falling from September's warm 73.8°F (23.2°C) to a moderate 57.9°F (14.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Onawa Junction, is also a frosty month, with temperature in the range of an average low of 31.3°F (-0.4°C) and an average high of 44.1°F (6.7°C). A subtle decrease in the average high-temperature marks November, falling from October's refreshing 57.9°F (14.4°C) to a chilly 44.1°F (6.7°C). Weather in November »

Weather in December

December, the first month of the winter in Onawa Junction, is still a freezing cold month, with an average temperature fluctuating between 19°F (-7.2°C) and 29.1°F (-1.6°C). Onawa Junction's transition into December marks a considerable drop in the average high-temperature, moving down from a frosty 44.1°F (6.7°C) in November to a freezing cold 29.1°F (-1.6°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Onawa Junction?

Onawa Junction, Iowa, notes the coldest temperatures in January, with a average high of 24.4°F (-4.2°C) and a low of 12°F (-11.1°C).

What is the most humid month in Onawa Junction?

The most humid month is January, with an average relative humidity of 86%.

What is the driest month in Onawa Junction?

The month with the least rainfall is January, when the rain falls for 3.6 days and typically collects 0.55" (14mm) of precipitation.

How many days does it rain in Onawa Junction?

In Onawa Junction, during the entire year, the rain falls for 117 days and collects up to 19.84" (504mm) of precipitation.

When does it snow in Onawa Junction?

January through May, October through December are months with snowfall in Onawa Junction, Iowa.

How many days does it snow in Onawa Junction?

Throughout the year, there are 36.4 snowfall days, and 10.67" (271mm) of snow is accumulated.

What is the month with the least sunshine in Onawa Junction?

The month with the least sunshine in Onawa Junction is January, with an average of 4.1h of sunshine.

What is the month with the lowest UV index in Onawa Junction?

With an average maximum UV index of 1, January is the month with the lowest UV index in Onawa Junction.

What is the snowiest month in Onawa Junction?

February is the month with the most snowfall. Snow falls for 8.3 days and accumulates 3.19" (81mm) of snow.

When is Daylight Saving Time (DST) in Onawa Junction?

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 least humid months in Onawa Junction?

The months with the lowest humidity in Onawa Junction, Iowa, are April and October, with an average relative humidity of 68%.

What is the wettest month in Onawa Junction?

June is the month with the most rainfall in Onawa Junction. Rain falls for 17.3 days and accumulates 3.15" (80mm) of precipitation.

When it does not snow in Onawa Junction?

June through September are months without snowfall.

When are the longest days in Onawa Junction?

With an average of 15h and 18min of daylight, June has the longest days of the year.

What are the months with the highest UV index in Onawa Junction?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What part of the year is the hottest in Onawa Junction?

July, having an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64°F (17.8°C), is the warmest month in Onawa Junction, Iowa.

What month has the most sunshine in Onawa Junction?

With an average of 10.5h of sunshine, July has the most sunshine of the year in Onawa Junction, Iowa.

What is the month with the shortest days in Onawa Junction?

December has the shortest days of the year in Onawa Junction, with an average of 9h and 6min of daylight.

Average temperature
Onawa Junction, IA

Average temperature - Onawa Junction, IA

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure
Onawa Junction, IA

Average pressure - Onawa Junction, 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
Onawa Junction, IA

Average wind speed - Onawa Junction, IA

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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Average humidity
Onawa Junction, IA

Average humidity - Onawa Junction, IA

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).

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Average rainfall
Onawa Junction, IA

Average rainfall - Onawa Junction, IA

The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days
Onawa Junction, IA

Average rainfall days - Onawa Junction, IA

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall
Onawa Junction, IA

Average snowfall - Onawa Junction, IA

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Onawa Junction, IA

Average snowfall days - Onawa Junction, IA

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Onawa Junction, IA

Average daylight / Average sunshine - Onawa Junction, IA

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days
Onawa Junction, IA

Average sunshine days - Onawa Junction, IA

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).

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Average visibility
Onawa Junction, IA

Average visibility - Onawa Junction, 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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Onawa Junction, Iowa, USA

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