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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, like December, is a freezing cold winter month in Rockham, South Dakota, with an average temperature varying between 22.5°F (-5.3°C) and 7.9°F (-13.4°C). The coldest temperatures occur during January, when averages reach a peak of 22.5°F (-5.3°C) and a low of 7.9°F (-13.4°C). Weather in January »
Weather in February
February, the last month of the winter in Rockham, is another freezing cold month, with temperature in the range of an average low of 11.5°F (-11.4°C) and an average high of 25.7°F (-3.5°C). A minor adjustment in Rockham's average high-temperature is noted with the start of February, touching a still subzero cold 25.7°F (-3.5°C) from January's 22.5°F (-5.3°C). Weather in February »
Weather in March
March, the first month of the spring in Rockham, is a wintry month, with an average temperature varying between 25.9°F (-3.4°C) and 41.5°F (5.3°C). The onset of March witnesses a clear shift in the average high-temperature, escalating from a freezing cold 25.7°F (-3.5°C) in February to an icy 41.5°F (5.3°C). Weather in March »
Weather in April
April in Rockham, South Dakota, is a mild spring month, with temperature in the range of an average low of 37.4°F (3°C) and an average high of 55.4°F (13°C). As Rockham welcomes April, the average high-temperature sees a rise, transitioning from a wintry 41.5°F (5.3°C) in March 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 Rockham, South Dakota, with an average temperature fluctuating between 67.6°F (19.8°C) and 48.9°F (9.4°C). May's arrival brings a temperature shift, moving from a refreshing 55.4°F (13°C) in April to an enjoyable 67.6°F (19.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Rockham, South Dakota, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 58.6°F (14.8°C). An escalation in the average high-temperature is seen with the onset of June, moving from a comfortable 67.6°F (19.8°C) in May to a warm 78.4°F (25.8°C). Weather in June »
Weather in July
July, like June, in Rockham, South Dakota, is a moderately hot summer month, with an average temperature fluctuating between 64°F (17.8°C) and 85.6°F (29.8°C). With average temperatures fluctuating between a high of 85.6°F (29.8°C) and a low of 64°F (17.8°C), July stands out as the warmest month. During July, the heat index is evaluated at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rockham, South Dakota, with an average temperature ranging between max 84.4°F (29.1°C) and min 61.3°F (16.3°C). August's arrival shows an average high-temperature of a still moderately hot 84.4°F (29.1°C), hardly different from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Rockham, South Dakota, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 75.9°F (24.4°C). The transition into September involves a small decrease in the average high-temperature, dipping slightly from a warm 84.4°F (29.1°C) in August to a still moderately hot 75.9°F (24.4°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Rockham, South Dakota, with an average temperature fluctuating between 57.9°F (14.4°C) and 41.2°F (5.1°C). October's arrival signals a significant decrease in average high-temperatures, falling from September's moderately hot 75.9°F (24.4°C) to a refreshing 57.9°F (14.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Rockham, is also a frosty month, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 28.6°F (-1.9°C). A noticeable downshift in temperatures is seen as October gives way to November, with average highs moving from a moderate 57.9°F (14.4°C) to a frosty 43.5°F (6.4°C). Weather in November »
Weather in December
December, the first month of the winter in Rockham, is also a subzero cold month, with temperature in the range of an average high of 26.4°F (-3.1°C) and an average low of 14.2°F (-9.9°C). December marks a distinct drop in the average high-temperature, descending from November's chilly 43.5°F (6.4°C) to a subzero cold 26.4°F (-3.1°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Rockham?
With its average high temperature of 22.5°F (-5.3°C) and a low of 7.9°F (-13.4°C), January is regarded as the coldest month.
What is the most humid month in Rockham?
The most humid month is January, with an average relative humidity of 88%.
What is the driest month in Rockham?
The month with the least rainfall in Rockham is January, when the rain falls for 2.5 days and typically collects 0.51" (13mm) of precipitation.
How much does it rain in Rockham?
Throughout the year, in Rockham, there are 97.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.
When does it snow in Rockham?
Months with snowfall are January through April, October through December.
How many days does it snow in Rockham?
Throughout the year, there are 43.7 snowfall days, and 18.66" (474mm) of snow is accumulated.
What is the month with the least sunshine in Rockham?
January has the least sunshine of the year in Rockham, with an average of 4.1h of sunshine.
When is the lowest UV index in Rockham?
The months with the lowest UV index in Rockham are January and February, with an average maximum UV index of 1.
What is the snowiest month in Rockham?
February is the month with the most snowfall in Rockham, South Dakota. Snow falls for 8.9 days and accumulates 4.09" (104mm) of snow.
When is Daylight Saving Time (DST) in Rockham?
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.
When it does not snow in Rockham?
In Rockham, South Dakota, snow does not fall in May through September.
What is the rainiest month in Rockham?
The month with the most rainfall in Rockham, South Dakota, is June, when the rain falls for 15.1 days and typically aggregates up to 3.03" (77mm) of precipitation.
When are the longest days in Rockham?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What are the months with the highest UV index in Rockham?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month in Rockham?
July is Rockham's warmest month, registering average high temperatures of 85.6°F (29.8°C) and lows of 64°F (17.8°C).
What month has the most sunshine in Rockham?
July has the most sunshine of the year in Rockham, with an average of 11.2h of sunshine.
What is the least humid month in Rockham?
The least humid month is September, with an average relative humidity of 60%.
What is the month with the shortest days in Rockham?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Rockham, 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 (22.5°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure
Rockham, 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:
29.91"Hg - Average pressure in August:
29.91"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 (29.84"Hg).
Average wind speed
Rockham, SD
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.7mph - Average wind speed in March:
10mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.7mph - Average wind speed in June:
9.1mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.5mph - Average wind speed in September:
9.7mph - Average wind speed in October:
10.6mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).
Average humidity
Rockham, SD
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).
Average rainfall
Rockham, SD
- Average rainfall in January:
0.51" - Average rainfall in February:
0.67" - Average rainfall in March:
1.02" - Average rainfall in April:
1.61" - Average rainfall in May:
2.4" - Average rainfall in June:
3.03"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days
Rockham, SD
- Average rainfall days in January:
2.5 days - Average rainfall days in February:
1.9 days - Average rainfall days in March:
7.2 days - Average rainfall days in April:
10.6 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
11.7 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
9.3 days - Average rainfall days in October:
7.9 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
2.7 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (1.9 days).
Average snowfall
Rockham, SD
The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Rockham, SD
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
3.3 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:
1.3 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Rockham, 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 3min
- 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:
10h and 5min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
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:
4h and 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Rockham, SD
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
18 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
15 days - Average sunshine days in May:
15.2 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
16.9 days - Average sunshine days in September:
18.4 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index
Rockham, 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 and February (UV index 1).
Average cloud cover
Rockham, SD
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility
Rockham, 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).
Rockham, South Dakota, USA
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