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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 Altamont, South Dakota, is another subzero cold winter month, with an average temperature varying between 20.5°F (-6.4°C) and 7.2°F (-13.8°C). Altamont, South Dakota, reaches its lowest average temperatures in January, measuring 20.5°F (-6.4°C) at the peak and 7.2°F (-13.8°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Altamont, is another freezing cold month, with an average temperature varying between 23.9°F (-4.5°C) and 9.9°F (-12.3°C). Altamont's weather in February, with an average high-temperature of a still subzero cold 23.9°F (-4.5°C), subtly shifts from January's 20.5°F (-6.4°C). Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Altamont, South Dakota, with an average temperature ranging between max 39°F (3.9°C) and min 24.8°F (-4°C). Altamont, South Dakota, witnesses a significant increase in the average high-temperature with the arrival of March, rising from February's subzero cold 23.9°F (-4.5°C) to a wintry 39°F (3.9°C). Weather in March »
Weather in April
April is a fresh spring month in Altamont, South Dakota, with an average temperature ranging between min 37°F (2.8°C) and max 53.2°F (11.8°C). Altamont's transition into April brings a rise in the average high-temperature, moving from a wintry 39°F (3.9°C) in March to a cool 53.2°F (11.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Altamont, South Dakota, with an average temperature fluctuating between 48.6°F (9.2°C) and 66.4°F (19.1°C). With the transition into May, Altamont experiences an increase in average high-temperatures, moving up from a cool 53.2°F (11.8°C) in April to a refreshing 66.4°F (19.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Altamont, South Dakota, with an average temperature varying between 58.6°F (14.8°C) and 75.7°F (24.3°C). In June, the meteorological conditions change with the average high-temperature moving from a refreshing 66.4°F (19.1°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Altamont, South Dakota, with an average temperature varying between 62.1°F (16.7°C) and 81.1°F (27.3°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 81.1°F (27.3°C) and a low of 62.1°F (16.7°C). In July, the average heat index is calculated to be a tropical 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Altamont, is also a moderately hot month, with an average temperature fluctuating between 59.5°F (15.3°C) and 80.1°F (26.7°C). August's advent notes a subtle adjustment in average high-temperature to a still moderately hot 80.1°F (26.7°C) from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Altamont, South Dakota, with an average temperature varying between 52.7°F (11.5°C) and 72.5°F (22.5°C). Altamont's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 80.1°F (26.7°C) to a pleasant 72.5°F (22.5°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Altamont, South Dakota, with temperature in the range of an average low of 41°F (5°C) and an average high of 56.3°F (13.5°C). October's arrival brings a noticeable temperature shift, dropping from a pleasant 72.5°F (22.5°C) in September to a moderate 56.3°F (13.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cold month in Altamont, South Dakota, with an average temperature varying between 28.2°F (-2.1°C) and 41.4°F (5.2°C). In Altamont, the onset of November is marked by a decreased average high-temperature, declining from October's mild 56.3°F (13.5°C) to a cold 41.4°F (5.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Altamont, South Dakota, with an average temperature ranging between min 14°F (-10°C) and max 25.3°F (-3.7°C). With the onset of December, Altamont's weather experiences a distinct temperature drop, moving from an icy 41.4°F (5.2°C) in November to a freezing cold 25.3°F (-3.7°C). Weather in December »
Updated: Feb 14, 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 in Altamont?
Altamont's coldest temperatures are experienced in January, with average high temperatures of 20.5°F (-6.4°C) and lows of 7.2°F (-13.8°C).
What is the most humid month in Altamont?
With an average relative humidity of 89%, January is the most humid month.
What is the driest month in Altamont?
The month with the least rainfall in Altamont is January, when the rain falls for 1.7 days and typically collects 0.43" (11mm) of precipitation.
How much does it rain in Altamont?
In Altamont, South Dakota, during the entire year, the rain falls for 101.9 days and collects up to 14.61" (371mm) of precipitation.
When does it snow in Altamont?
Months with snowfall in Altamont, South Dakota, are January through May, October through December.
How many days does it snow in Altamont?
Throughout the year, in Altamont, there are 49.9 snowfall days, and 14.02" (356mm) of snow is accumulated.
What is the month with the least sunshine in Altamont?
With an average of 4h of sunshine, January has the least sunshine of the year in Altamont, South Dakota.
What are the months with the lowest UV index in Altamont?
The months with the lowest UV index in Altamont are January and November, with an average maximum UV index of 1.
When does it snow the most in Altamont?
February is the month with the most snowfall. Snow falls for 10.1 days and accumulates 3.27" (83mm) of snow.
When is Daylight Saving Time (DST) in Altamont?
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 Altamont?
In Altamont, snow does not fall in June through September.
When are the longest days in Altamont?
June has the longest days of the year in Altamont, with an average of 15h and 30min of daylight.
When is the highest UV index in Altamont?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What is the hottest time of year in Altamont?
Altamont's July weather reaches an average high of 81.1°F (27.3°C) and an average low of 62.1°F (16.7°C), making it the warmest month.
What is the rainiest month in Altamont?
July is the month with the most rainfall. Rain falls for 13.2 days and accumulates 2.56" (65mm) of precipitation.
What month has the most sunshine in Altamont?
July has the most sunshine of the year, with an average of 10.6h of sunshine.
What is the least humid month in Altamont?
With an average relative humidity of 67%, October is the least humid month in Altamont.
What is the month with the shortest days in Altamont?
With an average of 8h and 54min of daylight, December has the shortest days of the year.
Average temperature
Altamont, SD
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure
Altamont, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Altamont, SD
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.7mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
8mph - Average wind speed in August:
8.1mph - Average wind speed in September:
9.3mph - Average wind speed in October:
10.5mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity
Altamont, SD
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Altamont, SD
- Average rainfall in January:
0.43" - Average rainfall in February:
0.47" - Average rainfall in March:
0.75" - Average rainfall in April:
1.34" - Average rainfall in May:
1.89" - Average rainfall in June:
2.01"
- Average rainfall in July:
2.56" - Average rainfall in August:
1.5" - Average rainfall in September:
1.26" - Average rainfall in October:
1.26" - Average rainfall in November:
0.47" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days
Altamont, SD
- Average rainfall days in January:
1.7 days - Average rainfall days in February:
1.8 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall
Altamont, SD
- Average snowfall in January:
2.72" - Average snowfall in February:
3.27" - Average snowfall in March:
2.28" - Average snowfall in April:
1.34" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Altamont, SD
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
10.1 days - Average snowfall days in March:
7.4 days - Average snowfall days in April:
3.3 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:
1 days - Average snowfall days in November:
5.6 days - Average snowfall days in December:
10.9 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Altamont, 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:
11h and 0min - 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 0min - Average sunshine in February:
4h and 4min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Altamont, SD
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
18 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
15.2 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Altamont, SD
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover
Altamont, SD
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Altamont, 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).
Altamont, South Dakota, USA
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