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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 Harrison, South Dakota, with an average temperature fluctuating between 27.3°F (-2.6°C) and 13.6°F (-10.2°C). Harrison, South Dakota, witnesses the coldest weather in January, with temperatures averaging a high of 27.3°F (-2.6°C) and a low of 13.6°F (-10.2°C). Weather in January »
Weather in February
February, the last month of the winter in Harrison, is another freezing cold month, with an average temperature ranging between max 31.5°F (-0.3°C) and min 16.9°F (-8.4°C). The arrival of February brings an average high-temperature of a still freezing cold 31.5°F (-0.3°C), closely following the temperature pattern of January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Harrison, South Dakota, with an average temperature varying between 46.9°F (8.3°C) and 30.4°F (-0.9°C). As Harrison welcomes March, there is a noticeable shift in the average high-temperature, escalating from February's freezing cold 31.5°F (-0.3°C) to a chilly 46.9°F (8.3°C). Weather in March »
Weather in April
April is a refreshing spring month in Harrison, South Dakota, with an average temperature varying between 57.7°F (14.3°C) and 39.7°F (4.3°C). The shift into April is characterized by a rise in the average high-temperature, transitioning from March's frosty 46.9°F (8.3°C) to a refreshing 57.7°F (14.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Harrison, South Dakota, with an average temperature ranging between min 50.4°F (10.2°C) and max 68.5°F (20.3°C). As May arrives, a rise in the average high-temperature is observed, moving from a mild 57.7°F (14.3°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »
Weather in June
June, the first month of the summer in Harrison, is a warm month, with an average temperature ranging between min 61.3°F (16.3°C) and max 79.5°F (26.4°C). The arrival of June brings an increase in high-temperatures, moving from a pleasant 68.5°F (20.3°C) in May to a warm 79.5°F (26.4°C). Weather in June »
Weather in July
July is a tropical summer month in Harrison, South Dakota, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 86.5°F (30.3°C). Harrison's July weather, with an average high temperature of 86.5°F (30.3°C) and an average low temperature of 65.7°F (18.7°C), tends to be the warmest of the year. The heat index for July is computed to be 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 Harrison, South Dakota, with an average temperature ranging between max 85.1°F (29.5°C) and min 62.8°F (17.1°C). The advent of August presents an average high-temperature of a moderately hot 85.1°F (29.5°C), maintaining a close correlation with the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Harrison, South Dakota, with an average temperature ranging between max 76.3°F (24.6°C) and min 55.4°F (13°C). The transition into September subtly indicates a reduction in the average high-temperature, down to a still moderately hot 76.3°F (24.6°C) from August's 85.1°F (29.5°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Harrison, South Dakota, with an average temperature ranging between min 42.4°F (5.8°C) and max 59.7°F (15.4°C). As Harrison welcomes October, there is a noticeable shift in the average high-temperature, dropping from September's warm 76.3°F (24.6°C) to a moderate 59.7°F (15.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Harrison, South Dakota, with an average temperature fluctuating between 46.4°F (8°C) and 30.9°F (-0.6°C). The move into November indicates a reduction in the average high-temperature, down from October's moderate 59.7°F (15.4°C) 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 Harrison, South Dakota, with an average temperature varying between 30.4°F (-0.9°C) and 18.3°F (-7.6°C). The beginning of December marks a clear shift in the average high-temperature, receding from November's chilly 46.4°F (8°C) to a freezing cold 30.4°F (-0.9°C). Weather in December »
Updated: Jul 20, 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 month in Harrison?
The coldest period is January, when temperatures fluctuate between an average high of 27.3°F (-2.6°C) and a low of 13.6°F (-10.2°C).
What is the most humid month?
With an average relative humidity of 84%, January is the most humid month.
How much does it rain?
In Harrison, during the entire year, the rain falls for 104.1 days and collects up to 14.29" (363mm) of precipitation.
When does it snow in Harrison?
January through April, October through December are months with snowfall.
What is the snowiest month?
The months with the most snowfall are January and March, with an average 1.93" (49mm) of accumulated snow.
How many days does it snow?
In Harrison, during the entire year, snow falls for 32.8 days and aggregates up to 8.35" (212mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.7h of sunshine.
When is the lowest UV index in Harrison?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 3.6 days and typically collects 0.31" (8mm) of precipitation.
When is Daylight Saving Time (DST) in Harrison?
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 rainiest month?
The month with the most rainfall is May, when the rain falls for 15.3 days and typically aggregates up to 2.72" (69mm) of precipitation.
When it does not snow?
In Harrison, snow does not fall in May through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 24min of daylight.
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 part of the year is the hottest?
July brings the highest temperatures, with an average high of 86.5°F (30.3°C) and an average low of 65.7°F (18.7°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.1h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 62%.
What is the month with the shortest days?
With an average of 9h and 0min of daylight, December has the shortest days of the year.
Average temperature
Harrison, SD
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure
Harrison, 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:
29.85"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.96"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 (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Harrison, SD
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.7mph - Average wind speed in April:
11.1mph - Average wind speed in May:
9.6mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.3mph - Average wind speed in August:
8.5mph - Average wind speed in September:
9.4mph - Average wind speed in October:
10.3mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity
Harrison, SD
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).
Average rainfall
Harrison, SD
- Average rainfall in January:
0.39" - Average rainfall in February:
0.31" - Average rainfall in March:
0.98" - Average rainfall in April:
1.42" - Average rainfall in May:
2.72" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.46" - Average rainfall in September:
1.02" - Average rainfall in October:
1.02" - Average rainfall in November:
0.35" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").
Average rainfall days
Harrison, SD
- Average rainfall days in January:
2.9 days - Average rainfall days in February:
3.6 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
12.4 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
9.4 days - Average rainfall days in October:
7.7 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).
Average snowfall
Harrison, SD
The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Harrison, SD
- Average snowfall days in January:
8.2 days - Average snowfall days in February:
7.5 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0 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:
0.8 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Harrison, 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 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - 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 4min - Average sunshine in February:
5h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - 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 3min - Average sunshine in September:
8h and 5min - 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Harrison, SD
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
19.5 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
14.6 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
18.4 days - Average sunshine days in October:
20.7 days - Average sunshine days in November:
23.4 days - Average sunshine days in December:
22.5 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index
Harrison, SD
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Harrison, SD
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility
Harrison, 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).
Harrison, South Dakota, USA
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