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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 another subzero cold winter month in Ralph, South Dakota, with an average temperature fluctuating between 12°F (-11.1°C) and 25.5°F (-3.6°C). January stands out as Ralph's coldest month, with an average high-temperature of 25.5°F (-3.6°C) and a low-temperature of 12°F (-11.1°C). Weather in January »
Weather in February
February, the last month of the winter in Ralph, is another freezing cold month, with an average temperature fluctuating between 27°F (-2.8°C) and 13.3°F (-10.4°C). Ralph's shift from January to February is accompanied by an average high-temperature of a still freezing cold 27°F (-2.8°C), a slight deviation from 25.5°F (-3.6°C). Weather in February »
Weather in March
March, the first month of the spring in Ralph, is a wintry month, with an average temperature fluctuating between 41.4°F (5.2°C) and 26.1°F (-3.3°C). A noticeable upsurge in temperatures is seen as February gives way to March, with average highs moving from a subzero cold 27°F (-2.8°C) to a wintry 41.4°F (5.2°C). Weather in March »
Weather in April
April is a cool spring month in Ralph, South Dakota, with an average temperature varying between 35.1°F (1.7°C) and 52°F (11.1°C). The shift from March to April brings an increase in the average high-temperature, moving from a wintry 41.4°F (5.2°C) to a cool 52°F (11.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Ralph, South Dakota, with an average temperature ranging between min 45.9°F (7.7°C) and max 64.2°F (17.9°C). Entering May, Ralph sees a temperature rise, with the average high-temperature advancing from April's cool 52°F (11.1°C) to a comfortable 64.2°F (17.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Ralph, South Dakota, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 75.9°F (24.4°C). With the onset of June, Ralph's average high-temperature experiences a rise, moving from May's refreshing 64.2°F (17.9°C) to a warm 75.9°F (24.4°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Ralph, South Dakota, with an average temperature fluctuating between 62.4°F (16.9°C) and 84.7°F (29.3°C). Ralph witnesses the warmest weather in July, with temperatures averaging a high of 84.7°F (29.3°C) and a low of 62.4°F (16.9°C). In July, the average heat index is appraised at a hot 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Ralph, South Dakota, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 61.7°F (16.5°C). Ralph in August witnesses an average high-temperature of a still moderately hot 82.4°F (28°C), indicating a slight variation from July's 84.7°F (29.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Ralph, South Dakota, with an average temperature fluctuating between 73°F (22.8°C) and 53.4°F (11.9°C). Stepping into September, Ralph observes a temperature decline, with the average high falling from August's moderately hot 82.4°F (28°C) to a pleasant 73°F (22.8°C). Weather in September »
Weather in October
October, the same as September, is a cool autumn month in Ralph, South Dakota, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 54.5°F (12.5°C). October's arrival is marked by a significant decrease in the average high-temperature, moving from a pleasant 73°F (22.8°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 Ralph, is also an icy month, with an average temperature varying between 27.1°F (-2.7°C) and 41.2°F (5.1°C). November shows a mild decline in the average high-temperature, falling from October's fresh 54.5°F (12.5°C) to a wintry 41.2°F (5.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Ralph, South Dakota, with temperature in the range of an average high of 26.2°F (-3.2°C) and an average low of 14.4°F (-9.8°C). December is marked by a significant decrease, with the average high-temperature retreating from a cold 41.2°F (5.1°C) in November to a subzero cold 26.2°F (-3.2°C). Weather in December »
Updated: Jun 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 are the coldest months?
The coldest month is January, with an average high-temperature of 25.5°F (-3.6°C) and an average low-temperature of 12°F (-11.1°C).
What is the most humid month?
With an average relative humidity of 84%, January is the most humid month.
What is the driest month?
January and November are months with the least rain when the rain falls for 4.2 days and typically aggregates up to 0.51" (13mm) of rain.
How many days does it rain?
Throughout the year, there are 104.8 rainfall days, and 15.2" (386mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Ralph are January through June, October through December.
How much does it snow?
Throughout the year, there are 67.2 snowfall days, and 24.69" (627mm) of snow is accumulated.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 13.5 days and typically aggregates up to 4.84" (123mm) of snow.
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 4.6h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 15.3 days and typically aggregates up to 2.48" (63mm) of precipitation.
When are the longest days?
The month with the longest days is June, with an average of 15h and 42min 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 is the hottest time of year?
With average high temperatures of 84.7°F (29.3°C) and lows of 62.4°F (16.9°C), July is the warmest month.
When it does not snow?
July through September are months without snowfall.
What month has the most sunshine?
With an average of 11.5h of sunshine, July has the most sunshine of the year.
What is the least humid month in Ralph?
The least humid month is August, with an average relative humidity of 50%.
What is the month with the lowest UV index?
With an average maximum UV index of 1, November is the month with the lowest UV index.
What is the month with the shortest days?
With an average of 8h and 42min of daylight, December has the shortest days of the year.
Average temperature
Ralph, SD
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure
Ralph, SD
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.91"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:
29.93"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Ralph, SD
- Average wind speed in January:
11.7mph - Average wind speed in February:
10.4mph - Average wind speed in March:
11mph - Average wind speed in April:
11.6mph - Average wind speed in May:
11mph - Average wind speed in June:
10.6mph
- Average wind speed in July:
9.8mph - Average wind speed in August:
9.7mph - Average wind speed in September:
10.7mph - Average wind speed in October:
11.7mph - Average wind speed in November:
11.1mph - Average wind speed in December:
11.1mph
The windiest months (with the highest average wind speed) are January and October (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity
Ralph, SD
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (50%).
Average rainfall
Ralph, SD
- Average rainfall in January:
0.51" - Average rainfall in February:
0.67" - Average rainfall in March:
1.02" - Average rainfall in April:
1.46" - Average rainfall in May:
2.48" - Average rainfall in June:
2.32"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.54" - Average rainfall in September:
1.14" - Average rainfall in October:
1.34" - Average rainfall in November:
0.51" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are January and November (0.51").
Average rainfall days
Ralph, SD
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
7.7 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
15.2 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
10.2 days - Average rainfall days in September:
8.1 days - Average rainfall days in October:
7.7 days - Average rainfall days in November:
3 days - Average rainfall days in December:
4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is November (3 days).
Average snowfall
Ralph, SD
- Average snowfall in January:
3.03" - Average snowfall in February:
4.84" - Average snowfall in March:
3.62" - Average snowfall in April:
3.5" - Average snowfall in May:
2.01" - Average snowfall in June:
0.04"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are July, August and September (0").
Average snowfall days
Ralph, SD
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
13.5 days - Average snowfall days in March:
10.5 days - Average snowfall days in April:
5.9 days - Average snowfall days in May:
1.4 days - Average snowfall days in June:
0.1 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:
3.6 days - Average snowfall days in November:
7.5 days - Average snowfall days in December:
12.5 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Ralph, SD
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 3min - Average sunshine in August:
11h and 2min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Ralph, SD
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
15.1 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
19 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is April (11.8 days).
Average UV index
Ralph, SD
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover
Ralph, SD
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility
Ralph, 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).
Ralph, South Dakota, USA
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