Climate and monthly weather forecastLong Valley, SD
Climate and monthly weather forecast
Weather in January
January, the same as December, in Long Valley, South Dakota, is a freezing cold winter month, with an average temperature ranging between min 16.7°F (-8.5°C) and max 29.8°F (-1.2°C). January proves to be the coldest month, recording an average maximum temperature of 29.8°F (-1.2°C) and a minimum temperature of 16.7°F (-8.5°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Long Valley, South Dakota, with an average temperature fluctuating between 32.9°F (0.5°C) and 18.5°F (-7.5°C). The dawn of February sees an average high-temperature of a wintry 32.9°F (0.5°C), subtly contrasting with January's 29.8°F (-1.2°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Long Valley, South Dakota, with an average temperature ranging between min 30.6°F (-0.8°C) and max 46.8°F (8.2°C). Long Valley's March weather shows an increase in high-temperatures, moving from February's wintry 32.9°F (0.5°C) to a frosty 46.8°F (8.2°C). Weather in March »Weather in April
April is a mild spring month in Long Valley, South Dakota, with an average temperature varying between 38.7°F (3.7°C) and 56.5°F (13.6°C). With the onset of April, Long Valley's weather sees a temperature rise, transitioning from a frosty 46.8°F (8.2°C) in March to a refreshing 56.5°F (13.6°C). Weather in April »Weather in May
May, the last month of the spring in Long Valley, is a pleasant month, with an average temperature varying between 49.6°F (9.8°C) and 68.2°F (20.1°C). The arrival of May sees a shift in the average high-temperature, moving from a refreshing 56.5°F (13.6°C) in April to an agreeable 68.2°F (20.1°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Long Valley, South Dakota, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 60.4°F (15.8°C). As May transitions into June, Long Valley sees a rise in the average high-temperature, moving from a pleasant 68.2°F (20.1°C) to a warm 81.3°F (27.4°C). Weather in June »Weather in July
July is a tropical summer month in Long Valley, South Dakota, with an average temperature fluctuating between 89.2°F (31.8°C) and 68.5°F (20.3°C). July, on average, is the warmest month, registering a high temperature of 89.2°F (31.8°C) and a low of 68.5°F (20.3°C). The heat index value during July is appraised at a hot 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Long Valley, South Dakota, with an average temperature ranging between max 87.1°F (30.6°C) and min 66.9°F (19.4°C). Long Valley ushers in August with an average high-temperature of a still tropical 87.1°F (30.6°C), showing a close resemblance to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Long Valley, is also a moderately hot month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 58.3°F (14.6°C). With the onset of September, Long Valley's average high-temperature adjusts, receding from August's tropical 87.1°F (30.6°C) to a warm 77.5°F (25.3°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Long Valley, South Dakota, with an average temperature fluctuating between 59.2°F (15.1°C) and 43°F (6.1°C). Long Valley's transition into October marks a considerable drop in the average high-temperature, moving down from a warm 77.5°F (25.3°C) in September to a refreshing 59.2°F (15.1°C). Weather in October »Weather in November
November, the last month of the autumn in Long Valley, is another chilly month, with an average temperature ranging between max 46.4°F (8°C) and min 31.1°F (-0.5°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a refreshing 59.2°F (15.1°C) in October to a chilly 46.4°F (8°C). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Long Valley, South Dakota, with an average temperature ranging between min 18°F (-7.8°C) and max 30.7°F (-0.7°C). As Long Valley transitions into December, the average high-temperature shows a marked reduction, decreasing from a frosty 46.4°F (8°C) in November to a freezing cold 30.7°F (-0.7°C). Weather in December »Updated: Jul 31, 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
In Long Valley, January is the coldest month, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 16.7°F (-8.5°C).
January is the most humid month, with an average relative humidity of 81%.
The month with the least rainfall is January, when the rain falls for 2.8 days and typically collects 0.39" (10mm) of precipitation.
In Long Valley, during the entire year, the rain falls for 95.3 days and collects up to 13.74" (349mm) of precipitation.
January through May, October through December are months with snowfall.
In Long Valley, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.
January and February, with an average of 5.2h of sunshine, are months with the least sunshine.
The month with the most snowfall is February, when snow falls for 8.9 days and typically aggregates up to 3.15" (80mm) of snow.
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.
May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 2.09" (53mm) of precipitation.
June through September are months without snowfall.
With an average of 15h and 24min of daylight, June has the longest days of the year.
In Long Valley, July is the month with the highest recorded average temperatures, measuring a high of 89.2°F (31.8°C) and a low of 68.5°F (20.3°C).
With an average maximum UV index of 7, July is the month with the highest UV index.
August has the most sunshine of the year, with an average of 11.7h of sunshine.
The least humid month is September, with an average relative humidity of 47%.
With an average of 9h and 0min of daylight, December has the shortest days of the year.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Long Valley, SD
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Long Valley, SD
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Long Valley, SD
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.1mph - Average wind speed in March:
11mph - Average wind speed in April:
12.1mph - Average wind speed in May:
11.3mph - Average wind speed in June:
10.7mph
- Average wind speed in July:
10.3mph - Average wind speed in August:
10.2mph - Average wind speed in September:
11.1mph - Average wind speed in October:
11.5mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity
Long Valley, SD
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall
Long Valley, SD
- Average rainfall in January:
0.39" - Average rainfall in February:
0.55" - Average rainfall in March:
1.14" - Average rainfall in April:
1.57" - Average rainfall in May:
2.09" - Average rainfall in June:
1.69"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.18" - Average rainfall in September:
0.91" - Average rainfall in October:
1.14" - Average rainfall in November:
0.55" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days
Long Valley, SD
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
2.6 days - Average rainfall days in March:
6.5 days - Average rainfall days in April:
11.8 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
12.4 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
7.2 days - Average rainfall days in November:
3.7 days - Average rainfall days in December:
2.7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall
Long Valley, SD
- Average snowfall in January:
2.09" - Average snowfall in February:
3.15" - Average snowfall in March:
3.07" - Average snowfall in April:
2.13" - Average snowfall in May:
0.75" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Long Valley, SD
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.6 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:
1.5 days - Average snowfall days in November:
4 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Long Valley, SD
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - 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:
5h and 12min - Average sunshine in February:
5h and 12min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 48min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 42min - Average sunshine in September:
9h and 54min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 12min - Average sunshine in December:
5h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days
Long Valley, SD
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
18.6 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
15 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
15.5 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
20.4 days - Average sunshine days in November:
20.8 days - Average sunshine days in December:
21.1 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index
Long Valley, SD
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Long Valley, SD
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility
Long Valley, 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).
