Climate and monthly weather forecastGarretson, SD
Climate and monthly weather forecast
Weather in January
January, the same as December, in Garretson, South Dakota, is another subzero cold winter month, with an average temperature varying between 9.3°F (-12.6°C) and 22.8°F (-5.1°C). January, characterized by an average high temperature of 22.8°F (-5.1°C) and a low temperature of 9.3°F (-12.6°C), is generally the coldest month. Weather in January »Weather in February
February, the last month of the winter in Garretson, is another freezing cold month, with temperature in the range of an average low of 12.7°F (-10.7°C) and an average high of 26.4°F (-3.1°C). As Garretson welcomes February, the average high-temperature records at a still subzero cold 26.4°F (-3.1°C), marking an insignificant deviation from the prior month. Weather in February »Weather in March
March, the first month of the spring in Garretson, is a chilly month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 42.8°F (6°C). Garretson's transition into March is marked by a clear rise in the average high-temperature, advancing from a freezing cold 26.4°F (-3.1°C) in February to a frosty 42.8°F (6°C). Weather in March »Weather in April
April is a moderate spring month in Garretson, South Dakota, with temperature in the range of an average low of 38.7°F (3.7°C) and an average high of 55.4°F (13°C). The shift from March to April is marked by an increase in the average high-temperature, moving from a chilly 42.8°F (6°C) to a refreshing 55.4°F (13°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Garretson, South Dakota, with an average temperature varying between 50.4°F (10.2°C) and 67.5°F (19.7°C). In Garretson, the average high-temperature in May increases from a refreshing 55.4°F (13°C) in April to an enjoyable 67.5°F (19.7°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Garretson, South Dakota, with an average temperature fluctuating between 77.5°F (25.3°C) and 60.3°F (15.7°C). As June arrives, Garretson's weather shows an increase in high-temperatures, moving from May's enjoyable 67.5°F (19.7°C) to a moderately hot 77.5°F (25.3°C). Weather in June »Weather in July
July, like June, in Garretson, South Dakota, is a moderately hot summer month, with an average temperature ranging between min 62.6°F (17°C) and max 82.2°F (27.9°C). Temperature records mark July as the warmest month, with highs averaging 82.2°F (27.9°C) and lows at 62.6°F (17°C). The heat index value for July is computed to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Garretson, is another warm month, with an average temperature fluctuating between 80.8°F (27.1°C) and 59.5°F (15.3°C). During August, the average high-temperature is a still warm 80.8°F (27.1°C), maintaining a close resemblance to that of the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Garretson, South Dakota, with an average temperature fluctuating between 74.1°F (23.4°C) and 53.2°F (11.8°C). A subtle shift in Garretson's weather is observed as August turns into September, with the average high temperature reducing from 80.8°F (27.1°C) to a still moderately hot 74.1°F (23.4°C). Weather in September »Weather in October
October, the same as September, in Garretson, South Dakota, is a moderate autumn month, with an average temperature varying between 41.4°F (5.2°C) and 57.4°F (14.1°C). A notable decrease in the average high-temperature is observed during October, falling from a warm 74.1°F (23.4°C) in September to a refreshing 57.4°F (14.1°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Garretson, South Dakota, with an average temperature ranging between max 43°F (6.1°C) and min 29.3°F (-1.5°C). The start of November brings a distinct shift in the average high-temperature, dropping from October's moderate 57.4°F (14.1°C) to a frosty 43°F (6.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Garretson, South Dakota, with temperature in the range of an average high of 27.3°F (-2.6°C) and an average low of 15.3°F (-9.3°C). December's onset brings a clear reduction in the average high-temperature, falling from a chilly 43°F (6.1°C) in November to a freezing cold 27.3°F (-2.6°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Garretson, SD
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.8°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure
Garretson, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.99"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 (29.86"Hg).
Average wind speed
Garretson, SD
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.7mph - Average wind speed in April:
11.2mph - Average wind speed in May:
9.8mph - Average wind speed in June:
9mph
- Average wind speed in July:
8mph - Average wind speed in August:
8.1mph - Average wind speed in September:
9.4mph - Average wind speed in October:
10.4mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity
Garretson, SD
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Garretson, SD
- Average rainfall in January:
0.67" - Average rainfall in February:
0.75" - Average rainfall in March:
1.38" - Average rainfall in April:
2.4" - Average rainfall in May:
2.8" - Average rainfall in June:
3.19"
- Average rainfall in July:
2.24" - Average rainfall in August:
2.13" - Average rainfall in September:
1.93" - Average rainfall in October:
1.65" - Average rainfall in November:
0.63" - Average rainfall in December:
0.91"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days
Garretson, SD
- Average rainfall days in January:
2.7 days - Average rainfall days in February:
2.2 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
8.2 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
3.4 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.2 days).
Average snowfall
Garretson, SD
- Average snowfall in January:
3.43" - Average snowfall in February:
4.61" - Average snowfall in March:
3.39" - Average snowfall in April:
2.17" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Garretson, SD
- Average snowfall days in January:
8.9 days - Average snowfall days in February:
8.6 days - Average snowfall days in March:
7.2 days - Average snowfall days in April:
2.4 days - Average snowfall days in May:
0.3 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:
1.3 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
10 days
The month with the highest number of snowfall days is December (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Garretson, SD
- Average daylight in January:
9h and 24min - 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 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 6min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - 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:
4h and 0min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Garretson, SD
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
13.1 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
15.4 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
22.8 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index
Garretson, SD
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Garretson, SD
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Garretson, SD
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





