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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 another subzero cold winter month in Hayes, South Dakota, with an average temperature ranging between max 29.8°F (-1.2°C) and min 16.7°F (-8.5°C). With average high temperatures of 29.8°F (-1.2°C) and lows of 16.7°F (-8.5°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Hayes, South Dakota, with an average temperature varying between 18.5°F (-7.5°C) and 32.9°F (0.5°C). The high-temperature average in February for Hayes is a cold 32.9°F (0.5°C), staying closely aligned with January's conditions. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Hayes, South Dakota, with an average temperature fluctuating between 46.8°F (8.2°C) and 30.6°F (-0.8°C). As Hayes enters March, the average high-temperature increases from the a cold 32.9°F (0.5°C) of February to a chilly 46.8°F (8.2°C). Weather in March »
Weather in April
April in Hayes, South Dakota, is a refreshing spring month, with an average temperature varying between 38.7°F (3.7°C) and 56.5°F (13.6°C). As April arrives, Hayes's weather shows an increase in high-temperatures, moving from March's frosty 46.8°F (8.2°C) to a mild 56.5°F (13.6°C). Weather in April »
Weather in May
May, the last month of the spring in Hayes, is a pleasant month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 68.2°F (20.1°C). As Hayes welcomes May, the average high-temperature sees a rise, transitioning from a moderate 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 warm month in Hayes, South Dakota, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 81.3°F (27.4°C). June sees a temperature increase, moving from a pleasant 68.2°F (20.1°C) in May to a moderately hot 81.3°F (27.4°C). Weather in June »
Weather in July
July is a hot summer month in Hayes, South Dakota, with an average temperature varying 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 average heat index in July is calculated to be a hot 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Hayes, is another tropical month, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 66.9°F (19.4°C). Hayes's average high-temperature in August is a still hot 87.1°F (30.6°C), marking an insignificant difference from the 89.2°F (31.8°C) of July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Hayes, South Dakota, with temperature in the range of an average low of 58.3°F (14.6°C) and an average high of 77.5°F (25.3°C). In Hayes, the average high-temperature in September decreases from a hot 87.1°F (30.6°C) in August to a warm 77.5°F (25.3°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Hayes, South Dakota, with temperature in the range of an average low of 43°F (6.1°C) and an average high of 59.2°F (15.1°C). A clear reduction in the average high-temperature marks the arrival of October, falling from a warm 77.5°F (25.3°C) in September to a moderate 59.2°F (15.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Hayes, South Dakota, with an average temperature varying between 46.4°F (8°C) and 31.1°F (-0.5°C). With the onset of November, Hayes's average high-temperature adjusts, receding from October's mild 59.2°F (15.1°C) to a chilly 46.4°F (8°C). Weather in November »
Weather in December
December, the first month of the winter in Hayes, is still a freezing cold month, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 30.7°F (-0.7°C). Hayes's transition into December marks a considerable drop in the average high-temperature, moving down from a frosty 46.4°F (8°C) in November to a freezing cold 30.7°F (-0.7°C). Weather in December »
Updated: Aug 8, 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 month is the coldest?
During the coldest month in Hayes, January, temperatures average a high of 29.8°F (-1.2°C) and a low of 16.7°F (-8.5°C).
What is the most humid month?
January is the most humid month in Hayes, with an average relative humidity of 81%.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 2.8 days and typically collects 0.39" (10mm) of precipitation.
How many days does it rain?
Throughout the year, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
Throughout the year, there are 38.8 snowfall days, and 16.1" (409mm) of snow is accumulated.
What is the month with the least sunshine?
January and February, with an average of 5.2h of sunshine, are months with the least sunshine.
What is the snowiest month?
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.
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 MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 13.5 days and typically aggregates up to 2.09" (53mm) of precipitation.
When it does not snow?
In Hayes, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What is the warmest month?
In Hayes, July records the average highest temperatures, peaking at 89.2°F (31.8°C) and reaching a low of 68.5°F (20.3°C).
When is the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 7.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 11.7h of sunshine.
What is the least humid month?
With an average relative humidity of 47%, September is the least humid month.
What is the month with the shortest days?
With an average of 8h and 54min of daylight, December has the shortest days of the year.
When is the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Hayes, 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
Hayes, 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
Hayes, 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
Hayes, SD
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall
Hayes, 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
Hayes, 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
Hayes, 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
Hayes, 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
Hayes, 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:
5h and 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 5min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 5min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 4min - Average sunshine in September:
9h and 5min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 2min
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
Hayes, 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
Hayes, 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
Hayes, 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
Hayes, 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).
Hayes, South Dakota, USA
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