Climate and monthly weather forecastSaint Onge, SD
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Saint Onge, South Dakota, with an average temperature ranging between min 18.5°F (-7.5°C) and max 31.5°F (-0.3°C). With the transition into January, Saint Onge notes an average high-temperature of a still subzero cold 31.5°F (-0.3°C), closely resembling December. Weather in January »Weather in February
February, the last month of the winter in Saint Onge, is another freezing cold month, with an average temperature ranging between min 16.2°F (-8.8°C) and max 31.1°F (-0.5°C). Saint Onge records an average high-temperature of a still freezing cold 31.1°F (-0.5°C) in February, maintaining a close correlation with January's 31.5°F (-0.3°C). Weather in February »Weather in March
March, the first month of the spring in Saint Onge, is a frosty month, with an average temperature fluctuating between 27.5°F (-2.5°C) and 44.1°F (6.7°C). With the onset of March, the average high-temperature slightly shifts from February's subzero cold 31.1°F (-0.5°C) to a chilly 44.1°F (6.7°C). Weather in March »Weather in April
April in Saint Onge, South Dakota, is a cool spring month, with an average temperature varying between 33.4°F (0.8°C) and 51.4°F (10.8°C). With the onset of April, Saint Onge's weather sees a minor temperature rise, transitioning from a frosty 44.1°F (6.7°C) in March to a cool 51.4°F (10.8°C). Weather in April »Weather in May
May, the last month of the spring in Saint Onge, is an enjoyable month, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 61.9°F (16.6°C). As April transitions into May, Saint Onge sees a rise in the average high-temperature, moving from a fresh 51.4°F (10.8°C) to an enjoyable 61.9°F (16.6°C). Weather in May »Weather in June
June, the first month of the summer in Saint Onge, is a warm month, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 53.8°F (12.1°C). June witnesses an increase in the average high-temperature, moving from a comfortable 61.9°F (16.6°C) in May to a moderately hot 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Saint Onge, South Dakota, is another warm summer month, with an average temperature varying between 61°F (16.1°C) and 83.8°F (28.8°C). July is Saint Onge's warmest month, registering average high temperatures of 83.8°F (28.8°C) and lows of 61°F (16.1°C). The heat index for July is appraised at a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Saint Onge, is another warm month, with an average temperature fluctuating between 59.4°F (15.2°C) and 81.9°F (27.7°C). Saint Onge, South Dakota, greets August with an average high-temperature of a still moderately hot 81.9°F (27.7°C), marking a slight deviation from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Saint Onge, is still a pleasant month, with an average temperature ranging between min 52°F (11.1°C) and max 72.5°F (22.5°C). Saint Onge's September weather features a mild decline in high-temperatures, reducing from a moderately hot 81.9°F (27.7°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »Weather in October
October, like September, in Saint Onge, South Dakota, is a cool autumn month, with an average temperature fluctuating between 54.5°F (12.5°C) and 38.3°F (3.5°C). October witnesses a clear temperature decrease, falling from an agreeable 72.5°F (22.5°C) in September to a fresh 54.5°F (12.5°C). Weather in October »Weather in November
November, the last month of the autumn in Saint Onge, is another chilly month, with an average temperature ranging between min 28.2°F (-2.1°C) and max 43.5°F (6.4°C). A change in temperatures is noted as October gives way to November, with average highs reducing from a fresh 54.5°F (12.5°C) to a frosty 43.5°F (6.4°C). Weather in November »Weather in December
December, the first month of the winter in Saint Onge, is still a freezing cold month, with temperature in the range of an average low of 18.5°F (-7.5°C) and an average high of 30.9°F (-0.6°C). Saint Onge reaches its lowest average temperatures in December, measuring 30.9°F (-0.6°C) at the peak and 18.5°F (-7.5°C) at the lowest. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Saint Onge, SD
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.9°F).
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure
Saint Onge, SD
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Saint Onge, SD
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
8mph - Average wind speed in September:
8.8mph - Average wind speed in October:
10.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity
Saint Onge, SD
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (49%).
Average rainfall
Saint Onge, SD
- Average rainfall in January:
0.59" - Average rainfall in February:
0.75" - Average rainfall in March:
1.18" - Average rainfall in April:
2.01" - Average rainfall in May:
2.32" - Average rainfall in June:
1.81"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.54" - Average rainfall in September:
0.79" - Average rainfall in October:
1.5" - Average rainfall in November:
0.75" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Saint Onge, SD
- Average rainfall days in January:
3 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
7.2 days - Average rainfall days in April:
12.1 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
13 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
7.6 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall
Saint Onge, SD
- Average snowfall in January:
3.31" - Average snowfall in February:
5.04" - Average snowfall in March:
5.24" - Average snowfall in April:
7.36" - Average snowfall in May:
2.64" - Average snowfall in June:
0"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Saint Onge, SD
- Average snowfall days in January:
9.7 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
8 days - Average snowfall days in April:
6 days - Average snowfall days in May:
2.2 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:
4.1 days - Average snowfall days in November:
6.5 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Saint Onge, 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:
5h and 48min - Average sunshine in February:
5h and 42min - Average sunshine in March:
7h and 30min - Average sunshine in April:
9h and 6min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 12min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 24min - Average sunshine in December:
5h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days
Saint Onge, SD
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
13.7 days
- Average sunshine days in July:
14.8 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
20.1 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
20.3 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is May (12.7 days).
Average UV index
Saint Onge, SD
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover
Saint Onge, SD
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Saint Onge, 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).





