Yearly & Monthly weather

The climate of Flandreau
The best time to visit Flandreau
The worst time to visit Flandreau
Spring weather in Flandreau
Summer weather in Flandreau
Autumn weather in Flandreau
Winter weather in Flandreau
Weather in January
Weather in February
Weather in March
Weather in April
Weather in May
Weather in June
Weather in July
Weather in August
Weather in September
Weather in October
Weather in November
Weather in December
Frequently asked questions
Average temperature
Average pressure
Average wind speed
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

The climate of Flandreau

Flandreau, South Dakota, USA, is geographically located within the Köppen climate classification zone tagged as Dfa. This specifier embodies a humid continental ambiance, integrated with a distinct hot summer coupled with a traditionally absence of dry seasons.

The climatic pattern of Flandreau unfolds in rhythmic alternation of various weather conditions, retaining average monthly values. The annual high temperature stretches from 21.6°F (-5.8°C) in January to 81.1°F (27.3°C) in July. Flipping to the other side of the spectrum, the low temperatures range from 7.7°F (-13.5°C) in January to 62.2°F (16.8°C) in July. The humidity within this geographical enclave spans from 70% relative humidity in the months of April and May to a peak of 89% in January.

In terms of rainfall, the least recorded volume appears in January and November with 0.63" (16mm). Disproportionally, the highest rainfall of 3.15" (80mm) is visible in June. If watching raindrops fall is intriguing, the city records the highest number of rainfall days in June (17.6 days) and the fewest in February (2.4 days). The months from June to September are devoid of any snowfall, as recorded over the year. In stark contrast, January embodies the highest snowfall with 3.54" (90mm).

Weather characterization in Flandreau also reveals the existence of pressure differences throughout the year, fluctuating between 29.86 in. in June to 30.16 in. in January and February. The visibility across the landscape remains a constant average of 6 miles throughout the year.

Notable also are the wind conditions in Flandreau, with a yearly average wind speed varying from 8.3mph (13.4km/h) in July to 11.6mph (18.7km/h) in April. Gusts reach a peak of 17.3mph (27.8km/h) in December and find a minimum of 13.2mph (21.2km/h) in July.

The best time to visit Flandreau

The most favorable time for a delightful exploration of Flandreau would be the month of July where temperature averages reach 81.1°F (27.3°C) and rainfall averages remain relatively low at 2.76" (70mm). Additionally, UV index safety measures indicate a value of 6 in July, translating to delightful, sunny conditions. This period is accompanied by long daylight hours of 15.1 hours and more than 10.5 hours of sunshine, enhancing sightseeing opportunities.

The worst time to visit Flandreau

On the other side of these climatic pendulum swings, January portrays the least hospitable condition for exploratory activities. Attributes such as the lowest temperature of 21.6°F (-5.8°C), coupled with the highest recorded snowfall of 3.54" (90mm) make the outdoor climate quite harsh. The UV index plummets to 1 in January, reflecting a reduced amount of sunshine, undeniably affecting visibility and overall daylight, which is approximately 9.3 hours.

Spring weather in Flandreau

Spring, spanning from March to May, marks a gradual transition in Flandreau's weather conditions. Temperature values climb from 40.3°F (4.6°C) in March to 66.4°F (19.1°C) in May. Concurrently, the rainfall volume swells from 1.34" (34mm) to 2.68" (68mm). During these months, snowfall diminishes, falling from 2.01" (51mm) in March to a mere 0.2 inch in May. Wind speeds show a marginal rise from 10.9mph (17.5km/h) to 11.6mph (18.7km/h) through these months.

Summer weather in Flandreau

Typical summer months, June to August, showcase the hottest weather window in Flandreau. It offers temperatures oscillating from 75.9°F (24.4°C) in June up to 81.1°F (27.3°C) in July before dipping to 79.9°F (26.6°C) in August. The rainfall reaches a peak of 3.15" (80mm) in June and recedes progressively to 2.01" (51mm) in August. The UV index spikes at 6, enhancing sunshine hours to 9.6 hours, reaching a maximum of 15.4 hours of daylight in June.

Autumn weather in Flandreau

Between September and November, a downward shift in weather parameters can be noted. Temperatures shrink from 72.5°F (22.5°C) in September to 41.7°F (5.4°C) in November, while rainfall diminishes from 1.61" (41mm) to 0.63" (16mm). Moreover, daylight hours continually decline from September's 12.5 hours to November's 9.6 hours.

Winter weather in Flandreau

Throughout December to February, the harshness of winter become fully apparent within the area. Temperatures plummet from 25.7°F (-3.5°C) in December to a chilly 21.6°F (-5.8°C) in January and slightly rebound to 25°F (-3.9°C) in February. During this period, snowfall increases from no recorded snowfall in November to 3.54" (90mm) in January. The UV index hovers at 1, coupled with a short span of 8.9 to 9.3 daylight hours during this period. The wind speed maintains an average momentum of 10.6mph (17.1km/h) to 10.7mph (17.2km/h).

Weather in January

The new year begins in Flandreau, South Dakota, USA with a distinctly wintry feel. Frosty mornings are the norm in this initial stage of the year, with temperatures dipping to a low of 7.7°F (-13.5°C). The city remains in the grip of winter, with days largely overcast and cloud cover reaching 60%. Weather in January »

Weather in February

As the calendar turns to February, an increase in the amount of daylight hours suggests winter is losing its stronghold on Flandreau. The city witnesses marginally milder temperatures as compared to January. Yet, the ground seldom stays free of snow. Weather in February »

Weather in March

In March, weather conditions begin shifting in Flandreau from winter cold to early signs of spring thaw. Temperatures rise markedly as compared to February. However, it remains brisk enough for the occasional snow shower. A total amount of 2.99" (76mm) of snow is recorded in this period. Weather in March »

Weather in April

April sees further escalation in temperature in Flandreau, marking the departure of winter. The weather, although changing, remains capricious with instances of both rain and remaining snow. It receives the most rainfall for the year, equating to 2.28" (58mm) amassed over the month. Weather in April »

Weather in May

As May arrives in Flandreau, strands of winter have effectively dissolved. Instead of snowflakes, precipitation mostly falls in the form of rain now. The atmosphere tends to be moderately humid. It brings forth a definitive rise in temperature. Weather in May »

Weather in June

June is a time when Flandreau experiences full-blown summer conditions. Appreciable rise in temperatures are accompanied by elevated humidity levels. A defining characteristic of this month is the maximum daylight hours as compared to the other months in the year. Weather in June »

Weather in July

The weather in July, Flandreau’s peak summer month, brings with it the highest temperatures of the year. The city experiences the hottest conditions with average high temperatures hitting 81.1°F (27.3°C). One can see residents out and about, soaking up the sunshine. Weather in July »

Weather in August

August maintains the summer momentum in Flandreau with warm weather prevailing throughout. However, there is a small decline in the maximum temperatures compared to July. The pattern of rainfall starts to decrease with 2.01" (51mm) of rainfall collected. Weather in August »

Weather in September

Flandreau welcomes September and with it, the start of the transitional season of fall. A noticeable drop in temperatures from August signifies the change in seasons. Precipitation forms mainly of rain with the city witnessing 1.61" (41mm) of rainfall. Weather in September »

Weather in October

October in Flandreau is a clear embodiment of the fall season. With a further significant drop in temperatures from September, the city prepares to bid summer goodbye. The occasional snowfall occurs with a total accumulation of 0.39" (10mm). Weather in October »

Weather in November

As the city of Flandreau steps into November, the thermometer dips further. Touches of winter begin to prevail more vigorously, especially towards the month's end. November sees an average snowfall of 1.97" (50mm). Despite the dip in temperatures, extensive daylight remains. Weather in November »

Weather in December

December brings the full onset of winter in Flandreau. The temperatures drop dramatically, making the weather quite cold. December, in fact, is marked by a significant increase in snowfall with an accumulation of 4.8" (122mm). The decrease in daylight hours and a fall in UV index prepare residents for indoor activities. Weather in December »

Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

January, known for its average high temperature of 21.6°F (-5.8°C) and an average low temperature of 7.7°F (-13.5°C), is the coldest month.

What is the most humid month?

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

What is the driest month?

The months with the least rainfall are January and November Rain falls for 2.7 days and accumulates 0.63" (16mm) of rain.

How many days does it rain?

In Flandreau, during the entire year, the rain falls for 113.8 days and collects up to 20.59" (523mm) of precipitation.

When does it snow?

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

How much does it snow?

Throughout the year, there are 53.1 snowfall days, and 20.04" (509mm) of snow is accumulated.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.8h of sunshine.

What are the months with the lowest UV index?

The months with the lowest UV index are January, November 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 rainiest month?

The month with the most rainfall is June, when the rain falls for 17.6 days and typically aggregates up to 3.15" (80mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

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

When is the highest UV index?

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

What are the warmest months?

July is the warmest month, with the temperature often reaching an average high of 81.1°F (27.3°C) and an average low of 62.2°F (16.8°C).

What month has the most sunshine?

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

What is the least humid month?

October is the least humid month, with an average relative humidity of 68%.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 11.6 days and typically aggregates up to 4.8" (122mm) of snow.

What is the month with the shortest days?

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

Average temperature
Flandreau, SD

Average high temperature in January:
21.6°F
Average high temperature in February:
25°F
Average high temperature in March:
40.3°F
Average high temperature in April:
53.6°F
Average high temperature in May:
66.4°F
Average high temperature in June:
75.9°F

Average high temperature in July:
81.1°F
Average high temperature in August:
79.9°F
Average high temperature in September:
72.5°F
Average high temperature in October:
55.9°F
Average high temperature in November:
41.7°F
Average high temperature in December:
25.7°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (21.6°F).

Average low temperature in January:
7.7°F
Average low temperature in February:
10.9°F
Average low temperature in March:
25.9°F
Average low temperature in April:
37.2°F
Average low temperature in May:
48.7°F
Average low temperature in June:
58.8°F

Average low temperature in July:
62.2°F
Average low temperature in August:
59.2°F
Average low temperature in September:
52.3°F
Average low temperature in October:
40.1°F
Average low temperature in November:
27.9°F
Average low temperature in December:
14.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

Average pressure
Flandreau, SD

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

Average wind speed
Flandreau, 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 (8.3mph).

Average humidity
Flandreau, SD

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).

Average rainfall
Flandreau, SD

The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and November (0.63").

Average rainfall days
Flandreau, SD

Average rainfall days in January:
2.7 days
Average rainfall days in February:
2.4 days
Average rainfall days in March:
8.3 days
Average rainfall days in April:
12.6 days
Average rainfall days in May:
15 days
Average rainfall days in June:
17.6 days

Average rainfall days in July:
13.7 days
Average rainfall days in August:
12.8 days
Average rainfall days in September:
10.2 days
Average rainfall days in October:
9.4 days
Average rainfall days in November:
5.3 days
Average rainfall days in December:
3.8 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (2.4 days).

Average snowfall
Flandreau, SD

The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Flandreau, SD

Average snowfall days in January:
11.8 days
Average snowfall days in February:
9.9 days
Average snowfall days in March:
8.6 days
Average snowfall days in April:
3.5 days
Average snowfall days in May:
0.5 days
Average snowfall days in June:
0 days

Average snowfall days in July:
0 days
Average snowfall days in August:
0 days
Average snowfall days in September:
0 days
Average snowfall days in October:
1.6 days
Average snowfall days in November:
5.6 days
Average snowfall days in December:
11.6 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Flandreau, SD

Average daylight in January:
9h and 2min
Average daylight in February:
10h and 3min
Average daylight in March:
12h and 0min
Average daylight in April:
13h and 3min
Average daylight in May:
14h and 5min
Average daylight in June:
15h and 2min

Average daylight in July:
15h and 1min
Average daylight in August:
14h and 0min
Average daylight in September:
12h and 3min
Average daylight in October:
11h and 0min
Average daylight in November:
9h and 4min
Average daylight in December:
9h and 0min

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).

Average sunshine in January:
3h and 5min
Average sunshine in February:
4h and 5min
Average sunshine in March:
5h and 4min
Average sunshine in April:
7h and 5min
Average sunshine in May:
8h and 4min
Average sunshine in June:
9h and 4min

Average sunshine in July:
10h and 3min
Average sunshine in August:
10h and 0min
Average sunshine in September:
8h and 5min
Average sunshine in October:
5h and 5min
Average sunshine in November:
5h and 2min
Average sunshine in December:
4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days
Flandreau, SD

Average sunshine days in January:
18.1 days
Average sunshine days in February:
17 days
Average sunshine days in March:
15.3 days
Average sunshine days in April:
12.6 days
Average sunshine days in May:
14.3 days
Average sunshine days in June:
10.3 days

Average sunshine days in July:
15.6 days
Average sunshine days in August:
15.1 days
Average sunshine days in September:
17.6 days
Average sunshine days in October:
18.5 days
Average sunshine days in November:
19.4 days
Average sunshine days in December:
18.4 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.3 days).

Average UV index
Flandreau, SD

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

Average cloud cover
Flandreau, SD

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility
Flandreau, 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).

Climate and monthly weather forecastFlandreau, SD

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