Climate and monthly weather forecast
Winthrop, IA

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Weather in January

January, like December, is another subzero cold winter month in Winthrop, Iowa, with an average temperature ranging between max 24.3°F (-4.3°C) and min 12.2°F (-11°C). The coldest month is January, with an average high-temperature of 24.3°F (-4.3°C) and an average low-temperature of 12.2°F (-11°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Winthrop, Iowa, with an average temperature fluctuating between 28.2°F (-2.1°C) and 15.4°F (-9.2°C). February's advent presents an average high-temperature of a still subzero cold 28.2°F (-2.1°C), indicating a slight variation from the conditions of the previous month. Weather in February »

Weather in March

March, the first month of the spring in Winthrop, is a chilly month, with an average temperature ranging between max 43.5°F (6.4°C) and min 29.1°F (-1.6°C). The shift into March is marked by a noticeable escalation in the average high-temperature, rising from February's subzero cold 28.2°F (-2.1°C) to a chilly 43.5°F (6.4°C). Weather in March »

Weather in April

April is a mild spring month in Winthrop, Iowa, with an average temperature fluctuating between 56.1°F (13.4°C) and 39.7°F (4.3°C). As April begins, there is an increase in the average high-temperature, moving from a chilly 43.5°F (6.4°C) in March to a moderate 56.1°F (13.4°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Winthrop, Iowa, with temperature in the range of an average high of 68°F (20°C) and an average low of 51.3°F (10.7°C). An increase in the average high-temperature marks May, moving from April's mild 56.1°F (13.4°C) to an agreeable 68°F (20°C). Weather in May »

Weather in June

June, the first month of the summer in Winthrop, is a warm month, with temperature in the range of an average low of 60.8°F (16°C) and an average high of 77°F (25°C). As Winthrop welcomes June, the average high-temperature sees a rise, transitioning from a pleasant 68°F (20°C) in May to a moderately hot 77°F (25°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Winthrop, Iowa, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 63.1°F (17.3°C). With an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 63.1°F (17.3°C), July is the warmest month. Weather in July »

Weather in August

August, the last month of the summer in Winthrop, is another warm month, with an average temperature fluctuating between 78.3°F (25.7°C) and 60.6°F (15.9°C). With August's arrival, Winthrop notes an average high-temperature of a still moderately hot 78.3°F (25.7°C), closely following the trend of the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Winthrop, is also an agreeable month, with an average temperature varying between 54°F (12.2°C) and 72.5°F (22.5°C). With the onset of September, Winthrop's average high-temperature slightly adjusts, moderately receding from August's moderately hot 78.3°F (25.7°C) to an agreeable 72.5°F (22.5°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Winthrop, Iowa, with an average temperature fluctuating between 43.2°F (6.2°C) and 58.5°F (14.7°C). During the transition into October, Winthrop observes a decrease in the average high-temperature, falling from a pleasant 72.5°F (22.5°C) in September to a moderate 58.5°F (14.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Winthrop, Iowa, with an average temperature fluctuating between 44.1°F (6.7°C) and 30.9°F (-0.6°C). Winthrop's November weather features a mild decline in high-temperatures, reducing from a refreshing 58.5°F (14.7°C) in October to a frosty 44.1°F (6.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Winthrop, Iowa, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 20.8°F (-6.2°C). As December begins, there is a decrease in the average high-temperature, falling from a chilly 44.1°F (6.7°C) in November to a freezing cold 31.1°F (-0.5°C). Weather in December »
Resources | Updated: Feb 12, 2024 | Published by: Weather Atlas

Frequently asked questions

What month is the coldest in Winthrop?

January is the month that records the lowest temperatures in Winthrop, Iowa, with averages ranging from a high of 24.3°F (-4.3°C) to a low of 12.2°F (-11°C).

What is the most humid month in Winthrop?

The most humid month in Winthrop, Iowa, is January, with an average relative humidity of 87%.

What is the driest month in Winthrop?

January is the month with the least rainfall in Winthrop. Rain falls for 3.6 days and accumulates 1.14" (29mm) of precipitation.

How much does it rain in Winthrop?

In Winthrop, during the entire year, the rain falls for 140.6 days and collects up to 30" (762mm) of precipitation.

When does it snow in Winthrop?

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

When does it snow the most in Winthrop?

The month with the most snowfall is January, when snow falls for 11.3 days and typically aggregates up to 5.12" (130mm) of snow.

How much does it snow in Winthrop?

In Winthrop, during the entire year, snow falls for 43.9 days and aggregates up to 18.43" (468mm) of snow.

What is the month with the least sunshine in Winthrop?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Winthrop.

When is the lowest UV index in Winthrop?

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

When is Daylight Saving Time (DST) in Winthrop?

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 Winthrop?

The months with the most rainfall in Winthrop are May and June, with an average 4.37" (111mm) of precipitation.

When is the highest UV index in Winthrop?

The months with the highest UV index in Winthrop, Iowa, are May through August, with an average maximum UV index of 5.

When it does not snow in Winthrop?

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

When are the longest days in Winthrop?

June has the longest days of the year in Winthrop, with an average of 15h and 12min of daylight.

What is the hottest time of year in Winthrop?

July, noted for its average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 63.1°F (17.3°C), is considered the warmest month.

What month has the most sunshine in Winthrop?

July has the most sunshine of the year in Winthrop, with an average of 9.8h of sunshine.

What is the least humid month in Winthrop?

With an average relative humidity of 73%, October is the least humid month.

What is the month with the shortest days in Winthrop?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

Average temperature
Winthrop, IA

Average temperature - Winthrop, IA

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

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Average pressure
Winthrop, IA

Average pressure - Winthrop, IA

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed
Winthrop, IA

Average wind speed - Winthrop, IA

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average rainfall
Winthrop, IA

Average rainfall - Winthrop, IA

The wettest months (with the highest rainfall) are May and June (4.37").
The driest month (with the least rainfall) is January (1.14").

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Average rainfall days
Winthrop, IA

Average rainfall days - Winthrop, IA

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (3.6 days).

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Average snowfall
Winthrop, IA

Average snowfall - Winthrop, IA

The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Winthrop, IA

Average snowfall days - Winthrop, IA

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Winthrop, IA

Average daylight / Average sunshine - Winthrop, IA

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

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Winthrop, IA

Average sunshine days - Winthrop, IA

The months with the most sunshine days are January, October and November (17.5 days).
The month with the least sunshine days is June (8.2 days).

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Average UV index
Winthrop, IA

Average UV index - Winthrop, IA

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average visibility
Winthrop, IA

Average visibility - Winthrop, 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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Winthrop, Iowa, USA

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