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Contents
- 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
Weather in January
January, the same as December, in Roswell, South Dakota, is another subzero cold winter month, with temperature in the range of an average low of 10.2°F (-12.1°C) and an average high of 24.4°F (-4.2°C). January is Roswell's coldest month, registering average high temperatures of 24.4°F (-4.2°C) and lows of 10.2°F (-12.1°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Roswell, South Dakota, with an average temperature varying between 28.6°F (-1.9°C) and 14.2°F (-9.9°C). The shift into February uncovers an average high-temperature of a still subzero cold 28.6°F (-1.9°C), subtly different from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Roswell, is a frosty month, with temperature in the range of an average high of 44.4°F (6.9°C) and an average low of 27.9°F (-2.3°C). March signals a clear temperature escalation, with average high-temperatures advancing from February's freezing cold 28.6°F (-1.9°C) to a chilly 44.4°F (6.9°C). Weather in March »
Weather in April
April in Roswell, South Dakota, is a refreshing spring month, with an average temperature varying between 56.8°F (13.8°C) and 38.8°F (3.8°C). April indicates a change in the average high-temperature, moving up from a chilly 44.4°F (6.9°C) in March to a refreshing 56.8°F (13.8°C). Weather in April »
Weather in May
May, the last month of the spring in Roswell, is an agreeable month, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 50°F (10°C). With the transition into May, Roswell experiences an increase in average high-temperatures, moving up from a refreshing 56.8°F (13.8°C) in April to an agreeable 68.4°F (20.2°C). Weather in May »
Weather in June
June, the first month of the summer in Roswell, is a warm month, with an average temperature varying between 79°F (26.1°C) and 60.3°F (15.7°C). The shift into June is characterized by a rise in the average high-temperature, transitioning from May's pleasant 68.4°F (20.2°C) to a moderately hot 79°F (26.1°C). Weather in June »
Weather in July
July, like June, in Roswell, South Dakota, is a moderately hot summer month, with an average temperature ranging between min 64.6°F (18.1°C) and max 85.6°F (29.8°C). The warmest time of the year is July, with temperatures averaging a high of 85.6°F (29.8°C) and a low of 64.6°F (18.1°C). The heat index for July is estimated at a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Roswell, South Dakota, with an average temperature fluctuating between 84.4°F (29.1°C) and 62.1°F (16.7°C). The transition into August is marked with an average high-temperature of a still warm 84.4°F (29.1°C), showing an insignificant shift from July's 85.6°F (29.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Roswell, South Dakota, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 55°F (12.8°C). The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 84.4°F (29.1°C) in August to a still moderately hot 76.1°F (24.5°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Roswell, South Dakota, with an average temperature fluctuating between 42.1°F (5.6°C) and 58.5°F (14.7°C). The shift from September to October brings a noticeable decrease in the average high-temperature, dropping from a warm 76.1°F (24.5°C) to a mild 58.5°F (14.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Roswell, is also a frosty month, with an average temperature fluctuating between 29.5°F (-1.4°C) and 45°F (7.2°C). The transition into November involves a decrease in the average high-temperature, falling from a mild 58.5°F (14.7°C) in October to a frosty 45°F (7.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Roswell, South Dakota, with an average temperature ranging between max 28.6°F (-1.9°C) and min 16°F (-8.9°C). As Roswell steps into December, the average high-temperature decreases significantly from the a chilly 45°F (7.2°C) of November to a freezing cold 28.6°F (-1.9°C). Weather in December »
Updated: Jul 30, 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
What is the coldest time of year?
The coldest period tends to be January, when average temperatures fluctuate between a high of 24.4°F (-4.2°C) and a low of 10.2°F (-12.1°C).
What is the most humid month?
The most humid month is January, with an average relative humidity of 87%.
How many days does it rain?
Throughout the year, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.
When does it snow in Roswell?
January through April, October through December are months with snowfall.
How much does it snow?
In Roswell, during the entire year, snow falls for 35.3 days and aggregates up to 7.17" (182mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.4h of sunshine.
What is the month with the lowest UV index?
With an average maximum UV index of 1, January is the month with the lowest UV index.
What is the driest month?
February and November are months with the least rain when the rain falls for 1.9 days and typically aggregates up to 0.28" (7mm) of rain.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 7.3 days and accumulates 1.42" (36mm) of snow.
When is Daylight Saving Time (DST) in Roswell?
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 May, when the rain falls for 13.5 days and typically aggregates up to 1.65" (42mm) of precipitation.
When it does not snow?
In Roswell, snow does not fall in May through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 24min of daylight.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What month is the hottest?
July, characterized by an average high temperature of 85.6°F (29.8°C) and a low temperature of 64.6°F (18.1°C), is generally the warmest month.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 11.1h of sunshine.
What is the least humid month in Roswell?
September and October, with an average relative humidity of 63%, are the least humid months.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 0min of daylight.
Average temperature
Roswell, SD
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure
Roswell, 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:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.96"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
Roswell, SD
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - 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:
9.2mph
- Average wind speed in July:
8.6mph - Average wind speed in August:
8.7mph - Average wind speed in September:
9.7mph - Average wind speed in October:
10.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity
Roswell, SD
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall
Roswell, SD
- Average rainfall in January:
0.31" - Average rainfall in February:
0.28" - Average rainfall in March:
0.83" - Average rainfall in April:
1.18" - Average rainfall in May:
1.65" - Average rainfall in June:
1.61"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.14" - Average rainfall in September:
1.18" - Average rainfall in October:
0.79" - Average rainfall in November:
0.28" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").
Average rainfall days
Roswell, SD
- Average rainfall days in January:
2.6 days - Average rainfall days in February:
1.9 days - Average rainfall days in March:
7.2 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
13.6 days
- Average rainfall days in July:
10.5 days - Average rainfall days in August:
10.5 days - Average rainfall days in September:
9.2 days - Average rainfall days in October:
6.8 days - Average rainfall days in November:
3.2 days - Average rainfall days in December:
2.9 days
The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).
Average snowfall
Roswell, SD
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Roswell, SD
- Average snowfall days in January:
8.7 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
5.4 days - Average snowfall days in April:
2.6 days - Average snowfall days in May:
0.1 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:
0.9 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Roswell, 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:
4h and 2min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Roswell, SD
- Average sunshine days in January:
21.6 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
14 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
17.8 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
22 days - Average sunshine days in November:
23.4 days - Average sunshine days in December:
21.9 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).
Average UV index
Roswell, SD
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Roswell, SD
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility
Roswell, 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).
Roswell, South Dakota, USA
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