Climate and monthly weather forecast
Willow Lake, SD

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Weather in January

January, the same as December, in Willow Lake, South Dakota, is another subzero cold winter month, with an average temperature ranging between max 19.4°F (-7°C) and min 5.5°F (-14.7°C). Willow Lake's January weather, with an average high temperature of 19.4°F (-7°C) and an average low temperature of 5.5°F (-14.7°C), tends to be the coldest of the year. Weather in January »

Weather in February

February, the last month of the winter in Willow Lake, is another freezing cold month, with an average temperature fluctuating between 22.5°F (-5.3°C) and 8.4°F (-13.1°C). The advent of February presents an average high-temperature of a still subzero cold 22.5°F (-5.3°C), maintaining a close correlation with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Willow Lake, is a cold month, with an average temperature varying between 38.1°F (3.4°C) and 23.7°F (-4.6°C). Willow Lake experiences a noticeable temperature shift with the start of March, with average high-temperatures moving from a freezing cold 22.5°F (-5.3°C) in February to a cold 38.1°F (3.4°C). Weather in March »

Weather in April

April is a fresh spring month in Willow Lake, South Dakota, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 35.2°F (1.8°C). April signals a shift in the average high-temperature, moving from March's wintry 38.1°F (3.4°C) to a fresh 51.6°F (10.9°C). Weather in April »

Weather in May

May, the last month of the spring in Willow Lake, is a comfortable month, with an average temperature ranging between max 64.6°F (18.1°C) and min 46.9°F (8.3°C). In Willow Lake, stepping into May brings a temperature increase, moving up from April's fresh 51.6°F (10.9°C) to an enjoyable 64.6°F (18.1°C). Weather in May »

Weather in June

June, the first month of the summer in Willow Lake, is a warm month, with an average temperature ranging between min 56.8°F (13.8°C) and max 74.5°F (23.6°C). The transition to June introduces an increase in the average high-temperature, shifting from a comfortable 64.6°F (18.1°C) in May to a moderately hot 74.5°F (23.6°C). Weather in June »

Weather in July

July, like June, in Willow Lake, South Dakota, is a moderately hot summer month, with an average temperature varying between 60.8°F (16°C) and 80.8°F (27.1°C). In Willow Lake, July records the highest average temperatures, peaking at 80.8°F (27.1°C) and reaching a low of 60.8°F (16°C). The heat index for July is computed to be 84.2°F (29°C). Weather in July »

Weather in August

August, the last month of the summer in Willow Lake, is also a moderately hot month, with an average temperature ranging between min 59°F (15°C) and max 80.1°F (26.7°C). The beginning of August records an average high-temperature of a still moderately hot 80.1°F (26.7°C), almost echoing the conditions of the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Willow Lake, South Dakota, with an average temperature fluctuating between 71.6°F (22°C) and 51.3°F (10.7°C). The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 80.1°F (26.7°C) in August to an agreeable 71.6°F (22°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Willow Lake, South Dakota, with temperature in the range of an average low of 39°F (3.9°C) and an average high of 54.3°F (12.4°C). The shift from September to October is characterized by a clear decrease in the average high-temperature, reducing from an agreeable 71.6°F (22°C) to a fresh 54.3°F (12.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Willow Lake, is also an icy month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 26.4°F (-3.1°C). Willow Lake's transition into November involves a shift in temperature, receding from a fresh 54.3°F (12.4°C) in October to an icy 40.1°F (4.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Willow Lake, South Dakota, with temperature in the range of an average low of 12.4°F (-10.9°C) and an average high of 23.7°F (-4.6°C). The start of December signals a considerable reduction in the average high-temperature, receding from a wintry 40.1°F (4.5°C) in November to a subzero cold 23.7°F (-4.6°C). Weather in December »

Frequently asked questions

What part of the year is the coldest?

In Willow Lake, the lowest temperatures are generally noted in January, averaging a high of 19.4°F (-7°C) and a low of 5.5°F (-14.7°C).

What is the most humid month?

January is the most humid month in Willow Lake, South Dakota, with an average relative humidity of 90%.

What is the driest month?

January and February are months with the least rain when the rain falls for 2.9 days and typically aggregates up to 0.59" (15mm) of rain.

How much does it rain?

In Willow Lake, during the entire year, the rain falls for 112.3 days and collects up to 18.78" (477mm) of precipitation.

When does it snow?

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

When does it snow the most?

The months with the most snowfall are January and December, with an average 3.74" (95mm) of accumulated snow.

How much does it snow?

In Willow Lake, during the entire year, snow falls for 64.3 days and aggregates up to 17.56" (446mm) of snow.

What is the month with the least sunshine?

With an average of 3.6h of sunshine, January has the least sunshine of the year.

When is the lowest UV index?

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

When is Daylight Saving Time (DST)?

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 wettest month?

June is the month with the most rainfall. Rain falls for 17.2 days and accumulates 3.19" (81mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 15h and 30min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

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

What is the hottest time of year?

The warmest period tends to be July, when average temperatures fluctuate between a high of 80.8°F (27.1°C) and a low of 60.8°F (16°C).

What month has the most sunshine?

The month with the most sunshine in Willow Lake is July, with an average of 10.7h of sunshine.

What is the least humid month?

September and October, with an average relative humidity of 68%, are the least humid months in Willow Lake, South Dakota.

What is the month with the shortest days?

The month with the shortest days in Willow Lake is December, with an average of 8h and 54min of daylight.

Average temperature
Willow Lake, SD

Average temperature - Willow Lake, SD

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).

Average pressure
Willow Lake, SD

Average pressure - Willow Lake, SD

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed
Willow Lake, SD

Average wind speed - Willow Lake, SD

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

Average humidity
Willow Lake, SD

Average humidity - Willow Lake, SD

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).

Average rainfall
Willow Lake, SD

Average rainfall - Willow Lake, SD

The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").

Average rainfall days
Willow Lake, SD

Average rainfall days - Willow Lake, SD

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).

Average snowfall
Willow Lake, SD

Average snowfall - Willow Lake, SD

The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Willow Lake, SD

Average snowfall days - Willow Lake, SD

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Willow Lake, SD

Average daylight / Average sunshine - Willow Lake, SD

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days
Willow Lake, SD

Average sunshine days - Willow Lake, SD

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).

Average UV index
Willow Lake, SD

Average UV index - Willow Lake, SD

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average visibility
Willow Lake, SD

Average visibility - Willow Lake, SD

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).

Willow Lake, South Dakota, USA

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