Climate and monthly weather forecastOnaka, SD
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Onaka, South Dakota, with an average temperature varying between 9.1°F (-12.7°C) and 22.6°F (-5.2°C). January, characterized by an average high temperature of 22.6°F (-5.2°C) and a low temperature of 9.1°F (-12.7°C), is generally the coldest month. 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 fluctuating between 25.2°F (-3.8°C) and 11.8°F (-11.2°C). Onaka experiences a transition to a still subzero cold 25.2°F (-3.8°C) in average high-temperatures with the arrival of February, not greatly differing from January's 22.6°F (-5.2°C). Weather in February »Weather in March
March, the first month of the spring in Onaka, is a wintry month, 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). March's arrival witnesses a distinct rise in the average high-temperature, advancing from February's freezing cold 25.2°F (-3.8°C) to a cold 39.9°F (4.4°C). Weather in March »Weather in April
April in Onaka, South Dakota, is a cool spring month, with an average temperature fluctuating between 54°F (12.2°C) and 36.7°F (2.6°C). April indicates a change in the average high-temperature, moving up from a cold 39.9°F (4.4°C) in March to a fresh 54°F (12.2°C). Weather in April »Weather in May
May, the last month of the spring in Onaka, is a refreshing month, with an average temperature ranging between max 66.2°F (19°C) and min 47.8°F (8.8°C). Noticing a change, the average high-temperature during May moves from April's fresh 54°F (12.2°C) to a comfortable 66.2°F (19°C). Weather in May »Weather in June
June, the first month of the summer in Onaka, is a warm month, with an average temperature fluctuating between 77.9°F (25.5°C) and 58.5°F (14.7°C). The average high-temperature increases in June, moving from a comfortable 66.2°F (19°C) in May to a warm 77.9°F (25.5°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Onaka, South Dakota, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 85.8°F (29.9°C). July stands out as Onaka's warmest month, with an average high-temperature of 85.8°F (29.9°C) and a low-temperature of 64.9°F (18.3°C). The heat index value for July is computed to be a tropical 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Onaka, South Dakota, with an average temperature fluctuating between 63°F (17.2°C) and 83.8°F (28.8°C). Transitioning into August, Onaka records an average high-temperature of a still moderately hot 83.8°F (28.8°C), almost identical to July's 85.8°F (29.9°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Onaka, South Dakota, with an average temperature ranging between min 54.5°F (12.5°C) and max 74.5°F (23.6°C). The start of September comes with a reduction in the average high-temperature, receding from 83.8°F (28.8°C) in August to a still warm 74.5°F (23.6°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Onaka, South Dakota, with an average temperature ranging between max 55.9°F (13.3°C) and min 40.6°F (4.8°C). October's onset brings a noticeable temperature drop, falling from a moderately hot 74.5°F (23.6°C) in September to a mild 55.9°F (13.3°C). Weather in October »Weather in November
The last month of the autumn, November, is also a wintry month in Onaka, South Dakota, with an average temperature ranging between max 41.9°F (5.5°C) and min 27.9°F (-2.3°C). Onaka's progression into November includes a drop in the average high-temperature, from a refreshing 55.9°F (13.3°C) in October to an icy 41.9°F (5.5°C). Weather in November »Weather in December
December, the first month of the winter in Onaka, is still a freezing cold month, with temperature in the range of an average high of 25.5°F (-3.6°C) and an average low of 14.2°F (-9.9°C). December's onset is marked by a clear temperature decrease, falling from a cold 41.9°F (5.5°C) in November to a freezing cold 25.5°F (-3.6°C). Weather in December »Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, recording an average high temperature of 22.6°F (-5.2°C) and a low temperature of 9.1°F (-12.7°C), is Onaka's coldest month.
With an average relative humidity of 88%, January is the most humid month in Onaka.
The month with the least rainfall is January, when the rain falls for 2.8 days and typically collects 0.55" (14mm) of precipitation.
Throughout the year, there are 97.8 rainfall days, and 16.65" (423mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
In Onaka, during the entire year, snow falls for 59.7 days and aggregates up to 19.96" (507mm) of snow.
The month with the least sunshine is January, with an average of 3.9h of sunshine.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 12.3 days and typically aggregates up to 5.04" (128mm) of snow.
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.
June is the month with the most rainfall. Rain falls for 14.4 days and accumulates 2.8" (71mm) of precipitation.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 36min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July, recording an average high temperature of 85.8°F (29.9°C) and a low temperature of 64.9°F (18.3°C), is Onaka's warmest month.
The month with the most sunshine is July, with an average of 11.2h of sunshine.
The months with the lowest humidity are August and September, with an average relative humidity of 56%.
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
Onaka, SD
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (22.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure
Onaka, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.14"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Onaka, SD
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.1mph - Average wind speed in March:
10.8mph - Average wind speed in April:
11.8mph - Average wind speed in May:
11mph - Average wind speed in June:
10.5mph
- Average wind speed in July:
9.9mph - Average wind speed in August:
9.7mph - Average wind speed in September:
11.1mph - Average wind speed in October:
11.7mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.4mph
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).
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%).
Average rainfall
Onaka, SD
- Average rainfall in January:
0.55" - Average rainfall in February:
0.75" - Average rainfall in March:
1.06" - Average rainfall in April:
1.61" - Average rainfall in May:
2.32" - Average rainfall in June:
2.8"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days
Onaka, SD
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
1.9 days - Average rainfall days in March:
6.5 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
14.4 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
7.9 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3.3 days
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).
Average snowfall
Onaka, SD
- Average snowfall in January:
3.19" - Average snowfall in February:
5.04" - Average snowfall in March:
3.43" - Average snowfall in April:
2.64" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Onaka, SD
- Average snowfall days in January:
12.8 days - Average snowfall days in February:
12.3 days - Average snowfall days in March:
10.1 days - Average snowfall days in April:
4.9 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:
2.3 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
11.2 days
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).
Average daylight / Average sunshine
Onaka, SD
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- 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:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
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).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
5h and 0min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 36min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
10h and 42min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 24min
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).
Average sunshine days
Onaka, SD
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
14.6 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
15.7 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
19.6 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
21.1 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).
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).
Average cloud cover
Onaka, SD
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 22).
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).
