Climate and monthly weather forecast
Rock Rapids, IA

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Weather in January

January, the same as December, in Rock Rapids, Iowa, is a freezing cold winter month, with an average temperature fluctuating between 23°F (-5°C) and 9.5°F (-12.5°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 23°F (-5°C) and a low of 9.5°F (-12.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Rock Rapids, Iowa, with an average temperature varying between 12.7°F (-10.7°C) and 26.4°F (-3.1°C). Rock Rapids records a slight change with February's average high-temperatures adjusting to a still subzero cold 26.4°F (-3.1°C) from January's 23°F (-5°C). Weather in February »

Weather in March

March, the first month of the spring in Rock Rapids, is a chilly month, with an average temperature fluctuating between 43.2°F (6.2°C) and 27.9°F (-2.3°C). As March begins, there is a noticeable increase in the average high-temperature, soaring from a freezing cold 26.4°F (-3.1°C) in February to a frosty 43.2°F (6.2°C). Weather in March »

Weather in April

April is a refreshing spring month in Rock Rapids, Iowa, with an average temperature varying between 39.2°F (4°C) and 55.4°F (13°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a chilly 43.2°F (6.2°C) to a refreshing 55.4°F (13°C). Weather in April »

Weather in May

May, the last month of the spring in Rock Rapids, is an enjoyable month, with an average temperature fluctuating between 67.6°F (19.8°C) and 50.9°F (10.5°C). Entering May, Rock Rapids sees a temperature rise, with the average high-temperature advancing from April's moderate 55.4°F (13°C) to a comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Rock Rapids, Iowa, with an average temperature fluctuating between 77.5°F (25.3°C) and 60.4°F (15.8°C). June indicates a change in the average high-temperature, moving up from a comfortable 67.6°F (19.8°C) in May to a warm 77.5°F (25.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Rock Rapids, Iowa, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 62.8°F (17.1°C). July brings the highest temperatures, with an average high of 81.5°F (27.5°C) and an average low of 62.8°F (17.1°C). The heat index for July is estimated at 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 Rock Rapids, Iowa, with an average temperature varying between 59.5°F (15.3°C) and 80.2°F (26.8°C). As August takes its course, Rock Rapids's average high-temperature registers at a still moderately hot 80.2°F (26.8°C), closely aligning with the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Rock Rapids, is still a warm month, with an average temperature fluctuating between 73.9°F (23.3°C) and 53.6°F (12°C). September marks a gentle change in average high-temperature, declining from August's moderately hot 80.2°F (26.8°C) to a still warm 73.9°F (23.3°C). Weather in September »

Weather in October

October, the same as September, in Rock Rapids, Iowa, is another mild autumn month, with an average temperature fluctuating between 41.5°F (5.3°C) and 57.4°F (14.1°C). October brings a significant decrease in the average high-temperature, moving down from a warm 73.9°F (23.3°C) in September to a mild 57.4°F (14.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Rock Rapids, Iowa, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 43.2°F (6.2°C). November brings a minor decrease, with the average high-temperature reducing from a mild 57.4°F (14.1°C) in October to a chilly 43.2°F (6.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Rock Rapids, Iowa, with an average temperature fluctuating between 27.3°F (-2.6°C) and 15.8°F (-9°C). Rock Rapids's weather in December is marked by a clear decrease in the average high-temperature, moving down from November's frosty 43.2°F (6.2°C) to a freezing cold 27.3°F (-2.6°C). Weather in December »
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Frequently asked questions

What is the coldest month in Rock Rapids?

Rock Rapids, Iowa, witnesses the coldest weather in January, with temperatures averaging a high of 23°F (-5°C) and a low of 9.5°F (-12.5°C).

What is the most humid month in Rock Rapids?

January is the most humid month, with an average relative humidity of 88%.

What is the driest month in Rock Rapids?

The month with the least rainfall in Rock Rapids is January, when the rain falls for 3.4 days and typically collects 0.71" (18mm) of precipitation.

How much does it rain in Rock Rapids?

In Rock Rapids, during the entire year, the rain falls for 119.2 days and collects up to 22.13" (562mm) of precipitation.

When does it snow in Rock Rapids?

Months with snowfall in Rock Rapids are January through May, October through December.

How much does it snow in Rock Rapids?

Throughout the year, in Rock Rapids, Iowa, there are 48.3 snowfall days, and 19.29" (490mm) of snow is accumulated.

What is the month with the least sunshine in Rock Rapids?

With an average of 4h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index in Rock Rapids?

January is the month with the lowest UV index in Rock Rapids, Iowa, with an average maximum UV index of 1.

What is the snowiest month in Rock Rapids?

The month with the most snowfall in Rock Rapids, Iowa, is February, when snow falls for 8.8 days and typically aggregates up to 4.61" (117mm) of snow.

When is Daylight Saving Time (DST) in Rock Rapids?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rock Rapids, Iowa, 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 Rock Rapids?

The month with the most rainfall in Rock Rapids is June, when the rain falls for 17.3 days and typically aggregates up to 3.43" (87mm) of precipitation.

When it does not snow in Rock Rapids?

June through September are months without snowfall in Rock Rapids.

When are the longest days in Rock Rapids?

With an average of 15h and 24min of daylight, June has the longest days of the year.

What is the month with the highest UV index in Rock Rapids?

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

What month is the hottest in Rock Rapids?

July, with its average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 62.8°F (17.1°C), holds the record as the warmest month in Rock Rapids.

What month has the most sunshine in Rock Rapids?

July has the most sunshine of the year in Rock Rapids, with an average of 10.5h of sunshine.

What is the least humid month in Rock Rapids?

October is the least humid month, with an average relative humidity of 67%.

What is the month with the shortest days in Rock Rapids?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

Average temperature
Rock Rapids, IA

Average temperature - Rock Rapids, 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 (23°F).

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).

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Average pressure
Rock Rapids, IA

Average pressure - Rock Rapids, IA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed
Rock Rapids, IA

Average wind speed - Rock Rapids, 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 (7.8mph).

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Average humidity
Rock Rapids, IA

Average humidity - Rock Rapids, IA

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).

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Average rainfall
Rock Rapids, IA

Average rainfall - Rock Rapids, IA

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.71").

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Average rainfall days
Rock Rapids, IA

Average rainfall days - Rock Rapids, IA

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall
Rock Rapids, IA

Average snowfall - Rock Rapids, IA

The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Rock Rapids, IA

Average snowfall days - Rock Rapids, IA

The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Rock Rapids, IA

Average daylight / Average sunshine - Rock Rapids, IA

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

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 0min).

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Average sunshine days
Rock Rapids, IA

Average sunshine days - Rock Rapids, IA

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.1 days).

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Average visibility
Rock Rapids, IA

Average visibility - Rock Rapids, IA

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Rock Rapids, Iowa, USA

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