Climate and monthly weather forecast
Onaka, SD

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Weather in January

January, like December, is another subzero cold winter month in Onaka, South Dakota, with an average temperature fluctuating between 9.1°F (-12.7°C) and 22.6°F (-5.2°C). The coldest temperatures occur during January, when averages reach a peak of 22.6°F (-5.2°C) and a low of 9.1°F (-12.7°C). Weather in January »

Weather in February

February, the last month of the winter in Onaka, is also a subzero cold month, with an average temperature ranging between min 11.8°F (-11.2°C) and max 25.2°F (-3.8°C). February records an average high-temperature of a still freezing cold 25.2°F (-3.8°C), indicating a minor variation from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Onaka, South Dakota, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 25.5°F (-3.6°C). With the onset of March, Onaka experiences a distinct temperature rise, with the average high-temperature advancing from February's subzero cold 25.2°F (-3.8°C) to an icy 39.9°F (4.4°C). Weather in March »

Weather in April

April is a fresh spring month in Onaka, South Dakota, with an average temperature fluctuating between 54°F (12.2°C) and 36.7°F (2.6°C). A shift in the average high-temperature is noticeable in April, changing from an icy 39.9°F (4.4°C) in March to a fresh 54°F (12.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Onaka, South Dakota, with an average temperature fluctuating between 66.2°F (19°C) and 47.8°F (8.8°C). May's onset brings a temperature rise, moving from a cool 54°F (12.2°C) in April to a comfortable 66.2°F (19°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Onaka, South Dakota, with an average temperature ranging between min 58.5°F (14.7°C) and max 77.9°F (25.5°C). Onaka's June weather brings a rise in high-temperatures, moving from an enjoyable 66.2°F (19°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 a moderately hot summer month in Onaka, South Dakota, with an average temperature varying between 64.9°F (18.3°C) and 85.8°F (29.9°C). Onaka's July weather reaches an average high of 85.8°F (29.9°C) and an average low of 64.9°F (18.3°C), making it the warmest month. The heat index value during July is evaluated at a hot 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Onaka, is also a moderately hot month, with an average temperature fluctuating between 63°F (17.2°C) and 83.8°F (28.8°C). Transitioning from July to August, Onaka observes an average high-temperature of a still warm 83.8°F (28.8°C), differing subtly from the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Onaka, is also a moderately hot month, with an average temperature varying between 54.5°F (12.5°C) and 74.5°F (23.6°C). Onaka's progression into September involves a drop in the average high-temperature, receding from 83.8°F (28.8°C) in August to a still moderately hot 74.5°F (23.6°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Onaka, South Dakota, with an average temperature fluctuating between 55.9°F (13.3°C) and 40.6°F (4.8°C). The onset of October witnesses a clear shift in the average high-temperature, dropping from a warm 74.5°F (23.6°C) in September to a refreshing 55.9°F (13.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Onaka, is another cold month, with an average temperature fluctuating between 41.9°F (5.5°C) and 27.9°F (-2.3°C). Onset of November comes with a temperature decline, the average high falling from a refreshing 55.9°F (13.3°C) in October to a cold 41.9°F (5.5°C). Weather in November »

Weather in December

December, the first month of the winter in Onaka, is also a subzero cold month, with an average temperature varying between 25.5°F (-3.6°C) and 14.2°F (-9.9°C). In December, the meteorological conditions markedly change with the average high-temperature descending from a cold 41.9°F (5.5°C) in November to a freezing cold 25.5°F (-3.6°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Onaka?

January, on average, is the coldest month, registering a high temperature of 22.6°F (-5.2°C) and a low of 9.1°F (-12.7°C).

What is the most humid month in Onaka?

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

What is the driest month in Onaka?

January is the month with the least rainfall in Onaka. Rain falls for 2.8 days and accumulates 0.55" (14mm) of precipitation.

How many days does it rain in Onaka?

Throughout the year, there are 97.8 rainfall days, and 16.65" (423mm) of precipitation is accumulated.

When does it snow in Onaka?

Months with snowfall in Onaka, South Dakota, are January through May, October through December.

How many days does it snow in Onaka?

In Onaka, South Dakota, during the entire year, snow falls for 59.7 days and aggregates up to 19.96" (507mm) of snow.

What is the month with the least sunshine in Onaka?

With an average of 3.9h of sunshine, January has the least sunshine of the year in Onaka, South Dakota.

What is the month with the lowest UV index in Onaka?

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

What is the snowiest month in Onaka?

The month with the most snowfall in Onaka, South Dakota, is February, when snow falls for 12.3 days and typically aggregates up to 5.04" (128mm) of snow.

When is Daylight Saving Time (DST) in Onaka?

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 in Onaka?

June is the month with the most rainfall in Onaka, South Dakota. Rain falls for 14.4 days and accumulates 2.8" (71mm) of precipitation.

When it does not snow in Onaka?

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

When are the longest days in Onaka?

June has the longest days of the year, with an average of 15h and 36min of daylight.

When is the highest UV index in Onaka?

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

What is the warmest month in Onaka?

Onaka's warmest weather arrives in July, when temperatures average a high of 85.8°F (29.9°C) and a low of 64.9°F (18.3°C).

What month has the most sunshine in Onaka?

July has the most sunshine of the year in Onaka, South Dakota, with an average of 11.2h of sunshine.

What is the least humid month in Onaka?

The months with the lowest humidity in Onaka are August and September, with an average relative humidity of 56%.

What is the month with the shortest days in Onaka?

December has the shortest days of the year in Onaka, with an average of 8h and 48min of daylight.

Average pressure
Onaka, SD

Average pressure - Onaka, SD

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed
Onaka, SD

Average wind speed - Onaka, SD

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).

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Average humidity
Onaka, SD

Average humidity - Onaka, SD

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).

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Average rainfall
Onaka, SD

Average rainfall - Onaka, SD

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days
Onaka, SD

Average rainfall days - Onaka, SD

The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall
Onaka, SD

Average snowfall - Onaka, SD

The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Onaka, SD

Average snowfall days - Onaka, SD

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Onaka, SD

Average daylight / Average sunshine - Onaka, SD

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days
Onaka, SD

Average sunshine days - Onaka, SD

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).

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Average UV index
Onaka, SD

Average UV index - Onaka, SD

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

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Average visibility
Onaka, SD

Average visibility - Onaka, 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).

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Onaka, South Dakota, USA

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