Expand
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 Fort Thompson, South Dakota, with temperature in the range of an average low of 12.6°F (-10.8°C) and an average high of 26.1°F (-3.3°C). Fort Thompson reaches its lowest average temperatures in January, measuring 26.1°F (-3.3°C) at the peak and 12.6°F (-10.8°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Fort Thompson, South Dakota, with an average temperature ranging between min 15.3°F (-9.3°C) and max 29.8°F (-1.2°C). Fort Thompson's shift into February is marked by a subtle change to a still subzero cold 29.8°F (-1.2°C) from January's 26.1°F (-3.3°C) in temperature. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Fort Thompson, South Dakota, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 45°F (7.2°C). The onset of March marks a clear increase in the average high-temperature, escalating from a subzero cold 29.8°F (-1.2°C) in February to a frosty 45°F (7.2°C). Weather in March »
Weather in April
April in Fort Thompson, South Dakota, is a moderate spring month, with an average temperature fluctuating between 56.3°F (13.5°C) and 38.3°F (3.5°C). The onset of April brings a temperature shift, with the average high-temperature moving from a chilly 45°F (7.2°C) in March to a mild 56.3°F (13.5°C). Weather in April »
Weather in May
May, the last month of the spring in Fort Thompson, is a refreshing month, with an average temperature varying between 49.3°F (9.6°C) and 67.8°F (19.9°C). The shift into May is accompanied by a temperature increase, with the average high-temperature rising from 56.3°F (13.5°C) in April to a still refreshing 67.8°F (19.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Fort Thompson, South Dakota, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 60.4°F (15.8°C). June's onset brings a temperature rise, moving from an enjoyable 67.8°F (19.9°C) in May to a moderately hot 79.7°F (26.5°C). Weather in June »
Weather in July
July is a tropical summer month in Fort Thompson, South Dakota, with an average temperature fluctuating between 66.2°F (19°C) and 88°F (31.1°C). Fort Thompson registers the highest average temperatures during the month of July, with peaks of 88°F (31.1°C) and lows of 66.2°F (19°C). For most parts of July, the heat index is appraised at a torrid 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Fort Thompson, South Dakota, with an average temperature varying between 85.8°F (29.9°C) and 63.7°F (17.6°C). Transitioning into August, Fort Thompson experiences an average high-temperature of a warm 85.8°F (29.9°C), marking a minor shift from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Fort Thompson, South Dakota, with an average temperature varying between 76.3°F (24.6°C) and 55.9°F (13.3°C). September's onset brings a reduction in the average high-temperature, from a warm 85.8°F (29.9°C) in August to a still moderately hot 76.3°F (24.6°C). Weather in September »
Weather in October
October, the same as September, in Fort Thompson, South Dakota, is another refreshing autumn month, with an average temperature varying between 58.6°F (14.8°C) and 42.4°F (5.8°C). Fort Thompson's weather in October is characterized by a distinct drop in the average high-temperature, reducing from a moderately hot 76.3°F (24.6°C) in September to a mild 58.6°F (14.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Fort Thompson, South Dakota, with an average temperature fluctuating between 45.5°F (7.5°C) and 29.7°F (-1.3°C). In Fort Thompson, the average high-temperature in November decreases from a mild 58.6°F (14.8°C) in October to a frosty 45.5°F (7.5°C). Weather in November »
Weather in December
December, the first month of the winter in Fort Thompson, is still a freezing cold month, with an average temperature varying between 16.9°F (-8.4°C) and 29.1°F (-1.6°C). The onset of December brings a clear temperature shift, with the average high-temperature decreasing from a frosty 45.5°F (7.5°C) in November to a freezing cold 29.1°F (-1.6°C). Weather in December »
Updated: Aug 19, 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 time of the year is the coldest?
In Fort Thompson, January records the average lowest temperatures, peaking at 26.1°F (-3.3°C) and reaching a low of 12.6°F (-10.8°C).
What is the most humid month in Fort Thompson?
January is the most humid month in Fort Thompson, with an average relative humidity of 86%.
How many days does it rain?
In Fort Thompson, South Dakota, during the entire year, the rain falls for 107.6 days and collects up to 17.83" (453mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
How much does it snow?
In Fort Thompson, during the entire year, snow falls for 50.9 days and aggregates up to 17.87" (454mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.7h of sunshine.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 11.7 days and accumulates 3.66" (93mm) of snow.
What is the month with the lowest UV index?
February is the month with the lowest UV index, with an average maximum UV index of 1.
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 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?
May through September are months without snowfall in Fort Thompson.
What is the wettest month in Fort Thompson?
June is the month with the most rainfall. Rain falls for 14.6 days and accumulates 3.03" (77mm) of precipitation.
When are the longest days?
With an average of 15h and 24min of daylight, June has the longest days of the year.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months?
July temperatures tend to peak at an average high of 88°F (31.1°C) and dip to a low of 66.2°F (19°C).
What month has the most sunshine?
July has the most sunshine of the year in Fort Thompson, South Dakota, with an average of 11.4h of sunshine.
What is the least humid month?
The least humid month is September, with an average relative humidity of 58%.
What is the driest month?
November is the month with the least rainfall. Rain falls for 4.1 days and accumulates 0.55" (14mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Fort Thompson, SD
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (26.1°F).
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure
Fort Thompson, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.91"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:
29.95"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Fort Thompson, SD
- Average wind speed in January:
10.3mph - Average wind speed in February:
9.9mph - Average wind speed in March:
10.6mph - Average wind speed in April:
11.3mph - Average wind speed in May:
10.4mph - Average wind speed in June:
9.8mph
- Average wind speed in July:
9.2mph - Average wind speed in August:
9.1mph - Average wind speed in September:
10.3mph - Average wind speed in October:
10.7mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).
Average humidity
Fort Thompson, SD
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is September (58%).
Average rainfall
Fort Thompson, SD
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
1.26" - Average rainfall in April:
1.89" - Average rainfall in May:
2.8" - Average rainfall in June:
3.03"
- Average rainfall in July:
2.28" - Average rainfall in August:
1.5" - Average rainfall in September:
1.18" - Average rainfall in October:
1.14" - Average rainfall in November:
0.55" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is November (0.55").
Average rainfall days
Fort Thompson, SD
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
11 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Fort Thompson, SD
The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Fort Thompson, SD
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
11.7 days - Average snowfall days in March:
8.3 days - Average snowfall days in April:
3.4 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:
1.6 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
9.6 days
The months with the highest number of snowfall days are January and February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Fort Thompson, 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:
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 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 5min - Average sunshine in March:
6h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
11h and 0min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 1min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Fort Thompson, SD
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
15.9 days - Average sunshine days in August:
17.2 days - Average sunshine days in September:
19.6 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is April (11.8 days).
Average UV index
Fort Thompson, SD
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Fort Thompson, SD
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Fort Thompson, 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).
Fort Thompson, South Dakota, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location