Climate and monthly weather forecast
Plymouth, IA

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Weather in January

January, like December, is a freezing cold winter month in Plymouth, Iowa, with temperature in the range of an average high of 22.5°F (-5.3°C) and an average low of 10°F (-12.2°C). January is the coldest month, with an average high-temperature of 22.5°F (-5.3°C) and an average low-temperature of 10°F (-12.2°C). Weather in January »

Weather in February

February, the last month of the winter in Plymouth, is another freezing cold month, with an average temperature fluctuating between 26.6°F (-3°C) and 13.5°F (-10.3°C). February registers an average high-temperature of a still subzero cold 26.6°F (-3°C), slightly varied from January's 22.5°F (-5.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a wintry month in Plymouth, Iowa, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 27.7°F (-2.4°C). March marks a distinct rise in the average high-temperature, ascending from February's freezing cold 26.6°F (-3°C) to a cold 41.5°F (5.3°C). Weather in March »

Weather in April

April in Plymouth, Iowa, is a fresh spring month, with temperature in the range of an average low of 39.4°F (4.1°C) and an average high of 54.9°F (12.7°C). The rise of average high-temperatures is seen in April, with an increase from an icy 41.5°F (5.3°C) in March to a cool 54.9°F (12.7°C). Weather in April »

Weather in May

May, the last month of the spring in Plymouth, is a comfortable month, with an average temperature fluctuating between 66.9°F (19.4°C) and 50.5°F (10.3°C). As Plymouth enters May, the average high-temperature increases from the a cool 54.9°F (12.7°C) of April to an enjoyable 66.9°F (19.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Plymouth, Iowa, with an average temperature varying between 76.8°F (24.9°C) and 60.6°F (15.9°C). The onset of June marks an increase in the average high-temperature, moving from a refreshing 66.9°F (19.4°C) in May to a moderately hot 76.8°F (24.9°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Plymouth, Iowa, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.6°F (17°C). July is the month when Plymouth sees the highest average temperatures, with a high of 79.3°F (26.3°C) and a low of 62.6°F (17°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Plymouth, Iowa, with an average temperature ranging between max 77.5°F (25.3°C) and min 59.9°F (15.5°C). With the onset of August, the average high-temperature stands at a still warm 77.5°F (25.3°C), closely aligned with July's 79.3°F (26.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Plymouth, Iowa, with an average temperature fluctuating between 53.4°F (11.9°C) and 72.5°F (22.5°C). The average high-temperature is a pleasant 72.5°F (22.5°C) in September, hardly different from the 77.5°F (25.3°C) recorded in August. Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Plymouth, Iowa, with temperature in the range of an average low of 42.6°F (5.9°C) and an average high of 57.6°F (14.2°C). As Plymouth, Iowa, transitions into October, a noticeable drop in the average high-temperature is observed, falling from a pleasant 72.5°F (22.5°C) in September to a moderate 57.6°F (14.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Plymouth, Iowa, with an average temperature ranging between min 30.2°F (-1°C) and max 42.8°F (6°C). The changeover to November signals a significant decrease in the average high-temperature, dropping from a refreshing 57.6°F (14.2°C) in October to a frosty 42.8°F (6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Plymouth, Iowa, with an average temperature varying between 28.4°F (-2°C) and 18°F (-7.8°C). The shift into December is characterized by a noticeable reduction in the average high-temperature, decreasing from November's frosty 42.8°F (6°C) to a subzero cold 28.4°F (-2°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Plymouth?

Plymouth reaches its average lowest temperatures in January, measuring 22.5°F (-5.3°C) at the peak and 10°F (-12.2°C) at the lowest.

What is the most humid month in Plymouth?

The most humid month is January, with an average relative humidity of 89%.

What is the driest month in Plymouth?

January is the month with the least rainfall in Plymouth, Iowa. Rain falls for 3.8 days and accumulates 0.94" (24mm) of precipitation.

How much does it rain in Plymouth?

In Plymouth, Iowa, during the entire year, the rain falls for 129.5 days and collects up to 25.98" (660mm) of precipitation.

When does it snow in Plymouth?

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

How many days does it snow in Plymouth?

Throughout the year, in Plymouth, there are 50.1 snowfall days, and 21.69" (551mm) of snow is accumulated.

What is the month with the least sunshine in Plymouth?

January has the least sunshine of the year in Plymouth, Iowa, with an average of 3.6h of sunshine.

When is the lowest UV index in Plymouth?

The months with the lowest UV index in Plymouth, Iowa, are January and December, with an average maximum UV index of 1.

What is the snowiest month in Plymouth?

The month with the most snowfall in Plymouth is February, when snow falls for 10.7 days and typically aggregates up to 5.94" (151mm) of snow.

When is Daylight Saving Time (DST) in Plymouth?

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 Plymouth?

June is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.98" (101mm) of precipitation.

When it does not snow in Plymouth?

In Plymouth, Iowa, snow does not fall in June through September.

When are the longest days in Plymouth?

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

What is the month with the highest UV index in Plymouth?

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

What are the warmest months in Plymouth?

July, having an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 62.6°F (17°C), is the warmest month in Plymouth, Iowa.

What is the month with the most sunshine in Plymouth?

The months with the most sunshine in Plymouth, Iowa, are July and August, with an average of 9.7h of sunshine.

What is the least humid month in Plymouth?

With an average relative humidity of 71%, October is the least humid month in Plymouth, Iowa.

What is the month with the shortest days in Plymouth?

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

Average temperature
Plymouth, IA

Average temperature - Plymouth, IA

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.5°F).

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10°F).

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Average pressure
Plymouth, IA

Average pressure - Plymouth, IA

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed
Plymouth, IA

Average wind speed - Plymouth, IA

The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

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Average rainfall
Plymouth, IA

Average rainfall - Plymouth, IA

The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days
Plymouth, IA

Average rainfall days - Plymouth, IA

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).

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Average snowfall
Plymouth, IA

Average snowfall - Plymouth, IA

The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Plymouth, IA

Average snowfall days - Plymouth, IA

The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Plymouth, IA

Average daylight / Average sunshine - Plymouth, 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 0min).

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days
Plymouth, IA

Average sunshine days - Plymouth, IA

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).

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Average visibility
Plymouth, IA

Average visibility - Plymouth, IA

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

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Plymouth, Iowa, USA

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