Climate and monthly weather forecastWillow Lake, SD
Climate and monthly weather forecast
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 »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.13"Hg
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 in January:
11mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.6mph - Average wind speed in May:
10.3mph - Average wind speed in June:
9.4mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.6mph - Average wind speed in September:
10mph - Average wind speed in October:
11.2mph - Average wind speed in November:
11mph - Average wind speed in December:
11mph
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
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 in January:
0.59" - Average rainfall in February:
0.59" - Average rainfall in March:
1.02" - Average rainfall in April:
1.46" - Average rainfall in May:
2.52" - Average rainfall in June:
3.19"
- Average rainfall in July:
2.91" - Average rainfall in August:
1.81" - Average rainfall in September:
1.57" - Average rainfall in October:
1.73" - Average rainfall in November:
0.63" - Average rainfall in December:
0.75"
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 in January:
2.9 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
8.3 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
3.5 days
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 in January:
3.74" - Average snowfall in February:
3.35" - Average snowfall in March:
2.2" - Average snowfall in April:
1.46" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
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 in January:
14.4 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
10 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
0.8 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:
0.1 days - Average snowfall days in October:
2.3 days - Average snowfall days in November:
7.1 days - Average snowfall days in December:
13 days
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 in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
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).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 24min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 0min
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 in January:
15.1 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
18.2 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19 days - Average sunshine days in December:
16.3 days
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
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 cloud cover
Willow Lake, SD
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).
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).





