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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 Letcher, South Dakota, with an average temperature ranging between min 10.2°F (-12.1°C) and max 24.4°F (-4.2°C). January is the coldest month of the year, registering average temperatures as high as 24.4°F (-4.2°C) and as low as 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 Letcher, South Dakota, with an average temperature ranging between max 28.6°F (-1.9°C) and min 14.2°F (-9.9°C). As January transitions into February, the average high-temperature rests at a still subzero cold 28.6°F (-1.9°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Letcher, is a frosty month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 44.4°F (6.9°C). March is marked by a distinct increase in the average high-temperature, climbing from a freezing cold 28.6°F (-1.9°C) in February to a chilly 44.4°F (6.9°C). Weather in March »
Weather in April
April in Letcher, South Dakota, is a moderate spring month, with an average temperature varying between 56.8°F (13.8°C) and 38.8°F (3.8°C). As Letcher enters April, the average high-temperature increases from the a chilly 44.4°F (6.9°C) of March to a moderate 56.8°F (13.8°C). Weather in April »
Weather in May
May, the last month of the spring in Letcher, is a pleasant month, with an average temperature ranging between min 50°F (10°C) and max 68.4°F (20.2°C). A shift in the average high-temperature is noticeable in May, changing from a moderate 56.8°F (13.8°C) in April to a pleasant 68.4°F (20.2°C). Weather in May »
Weather in June
June, the first month of the summer in Letcher, is a warm month, with an average temperature varying between 60.3°F (15.7°C) and 79°F (26.1°C). June's arrival signals an increase in average high-temperatures, moving from May's agreeable 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 Letcher, South Dakota, is another warm summer month, with temperature in the range of an average high of 85.6°F (29.8°C) and an average low of 64.6°F (18.1°C). July, with its high-temperature average of 85.6°F (29.8°C) and a low-temperature average of 64.6°F (18.1°C), is the warmest month. In July, the heat index is estimated at a tropical 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Letcher, is another warm month, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 62.1°F (16.7°C). Letcher's average high-temperature in August is a still moderately hot 84.4°F (29.1°C), indicating a subtle variation from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Letcher, South Dakota, with an average temperature fluctuating between 76.1°F (24.5°C) and 55°F (12.8°C). As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 84.4°F (29.1°C) 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 Letcher, South Dakota, with an average temperature varying between 58.5°F (14.7°C) and 42.1°F (5.6°C). As September transitions into October, a clear downswing in temperatures is observed, with average highs retreating from a warm 76.1°F (24.5°C) to a moderate 58.5°F (14.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Letcher, is also a frosty month, with an average temperature varying between 45°F (7.2°C) and 29.5°F (-1.4°C). As November arrives, Letcher's weather displays a decrease in high-temperatures, transitioning from October's mild 58.5°F (14.7°C) to a chilly 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 Letcher, South Dakota, with an average temperature varying between 16°F (-8.9°C) and 28.6°F (-1.9°C). December's arrival is marked by a notable drop in high-temperatures, falling from a chilly 45°F (7.2°C) in November to a freezing cold 28.6°F (-1.9°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Letcher?
January, having an average high-temperature of 24.4°F (-4.2°C) and an average low-temperature of 10.2°F (-12.1°C), is the coldest month in Letcher.
What is the most humid month in Letcher?
With an average relative humidity of 87%, January is the most humid month in Letcher, South Dakota.
How much does it rain in Letcher?
Throughout the year, in Letcher, South Dakota, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.
When does it snow in Letcher?
January through April, October through December are months with snowfall in Letcher.
How much does it snow in Letcher?
Throughout the year, in Letcher, South Dakota, there are 35.3 snowfall days, and 7.17" (182mm) of snow is accumulated.
What is the month with the least sunshine in Letcher?
The month with the least sunshine in Letcher is January, with an average of 4.4h of sunshine.
When is the lowest UV index in Letcher?
The month with the lowest UV index is January, with an average maximum UV index of 1.
What is the driest month in Letcher?
February and November are months with the least rain in Letcher when the rain falls for 1.9 days and typically aggregates up to 0.28" (7mm) of rain.
When does it snow the most in Letcher?
The month with the most snowfall in Letcher, South Dakota, is February, when snow falls for 7.3 days and typically aggregates up to 1.42" (36mm) of snow.
When is Daylight Saving Time (DST) in Letcher?
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 wettest month in Letcher?
The month with the most rainfall in Letcher 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 Letcher?
In Letcher, snow does not fall in May through September.
When are the longest days in Letcher?
With an average of 15h and 24min of daylight, June has the longest days of the year in Letcher.
What are the months with the highest UV index in Letcher?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year in Letcher?
In Letcher, South Dakota, temperatures reach their average annual highs in July, measuring 85.6°F (29.8°C) and a minimum average of 64.6°F (18.1°C).
What month has the most sunshine in Letcher?
With an average of 11.1h of sunshine, July has the most sunshine of the year.
What are the least humid months in Letcher?
The months with the lowest humidity in Letcher, South Dakota, are September and October, with an average relative humidity of 63%.
What is the month with the shortest days in Letcher?
The month with the shortest days in Letcher is December, with an average of 9h and 0min of daylight.
Average temperature
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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:
13h and 5min - 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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).
Letcher, South Dakota, USA
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