Climate and monthly weather forecastDelmont, SD
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Delmont, South Dakota, with an average temperature ranging between max 26.2°F (-3.2°C) and min 12.2°F (-11°C). The month of January, characterized by an average high of 26.2°F (-3.2°C) and a low of 12.2°F (-11°C), is recognized as the coldest. Weather in January »Weather in February
February, the last month of the winter in Delmont, is also a subzero cold month, with an average temperature varying between 30°F (-1.1°C) and 15.6°F (-9.1°C). The start of February sees the average high-temperature at a still freezing cold 30°F (-1.1°C), showing little difference from January's 26.2°F (-3.2°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Delmont, South Dakota, with an average temperature fluctuating between 45.9°F (7.7°C) and 29.7°F (-1.3°C). Witnessing a clear rise in March, the average high-temperature escalates from February's freezing cold 30°F (-1.1°C) to a frosty 45.9°F (7.7°C). Weather in March »Weather in April
April is a mild spring month in Delmont, South Dakota, with an average temperature varying between 39.7°F (4.3°C) and 57.6°F (14.2°C). The average high-temperature increases in April, moving from a frosty 45.9°F (7.7°C) in March to a mild 57.6°F (14.2°C). Weather in April »Weather in May
May, the last month of the spring in Delmont, is an agreeable month, with an average temperature varying between 50.5°F (10.3°C) and 68.5°F (20.3°C). May's arrival signals an increase in average high-temperatures, moving from April's mild 57.6°F (14.2°C) to an agreeable 68.5°F (20.3°C). Weather in May »Weather in June
June, the first month of the summer in Delmont, is a warm month, with an average temperature varying between 79.3°F (26.3°C) and 61°F (16.1°C). As Delmont welcomes June, the average high-temperature sees a rise, transitioning from a pleasant 68.5°F (20.3°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Delmont, South Dakota, with temperature in the range of an average high of 85.6°F (29.8°C) and an average low of 65.1°F (18.4°C). With average high temperatures of 85.6°F (29.8°C) and lows of 65.1°F (18.4°C), July is the warmest month. July's average heat index is estimated at a hot 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Delmont, South Dakota, with an average temperature varying between 84.4°F (29.1°C) and 62.6°F (17°C). With the onset of August, the average high-temperature stands at a still warm 84.4°F (29.1°C), closely aligned with July's 85.6°F (29.8°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Delmont, South Dakota, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 76.3°F (24.6°C). In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 84.4°F (29.1°C) in August to a still moderately hot 76.3°F (24.6°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Delmont, South Dakota, with an average temperature fluctuating between 42.4°F (5.8°C) and 59.4°F (15.2°C). A noticeable downshift in temperatures is seen as September gives way to October, with average highs moving from a moderately hot 76.3°F (24.6°C) to a refreshing 59.4°F (15.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Delmont, South Dakota, with an average temperature fluctuating between 30.6°F (-0.8°C) and 45.7°F (7.6°C). During the transition into November, Delmont observes a decrease in the average high-temperature, falling from a refreshing 59.4°F (15.2°C) in October to a frosty 45.7°F (7.6°C). Weather in November »Weather in December
December, the first month of the winter in Delmont, is still a freezing cold month, with temperature in the range of an average low of 17.1°F (-8.3°C) and an average high of 29.5°F (-1.4°C). With the transition into December, Delmont experiences a significant decrease in average high-temperatures, moving down from a frosty 45.7°F (7.6°C) in November to a subzero cold 29.5°F (-1.4°C). Weather in December »Updated: Aug 22, 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
Delmont's coldest month, January, registers temperatures that range from a high of 26.2°F (-3.2°C) to a low of 12.2°F (-11°C).
With an average relative humidity of 85%, January is the most humid month.
In Delmont, during the entire year, the rain falls for 106.8 days and collects up to 19.29" (490mm) of precipitation.
Months with snowfall are January through April, October through December.
Throughout the year, there are 33.1 snowfall days, and 12.91" (328mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 4.5h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the least rainfall is February, when the rain falls for 2.7 days and typically collects 0.51" (13mm) of precipitation.
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.
May is the month with the most rainfall. Rain falls for 15.2 days and accumulates 3.31" (84mm) of precipitation.
May through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 18min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July registers as the month with the average highest temperatures in Delmont, reaching 85.6°F (29.8°C) at its peak and 65.1°F (18.4°C) at the lowest.
July has the most sunshine of the year, with an average of 11h of sunshine.
The least humid month is October, with an average relative humidity of 63%.
The month with the most snowfall is December, when snow falls for 7.5 days and typically aggregates up to 2.56" (65mm) of snow.
The month with the shortest days is December, with an average of 9h and 0min of daylight.
Average temperature
Delmont, 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 (26.2°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure
Delmont, 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
Delmont, SD
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.2mph - Average wind speed in May:
9.8mph - Average wind speed in June:
9.1mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.6mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity
Delmont, SD
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (63%).
Average rainfall
Delmont, SD
- Average rainfall in January:
0.55" - Average rainfall in February:
0.51" - Average rainfall in March:
1.34" - Average rainfall in April:
2.13" - Average rainfall in May:
3.31" - Average rainfall in June:
2.83"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days
Delmont, SD
- Average rainfall days in January:
2.5 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
8.2 days - Average rainfall days in April:
11.8 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
11.9 days - Average rainfall days in August:
12 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
2.9 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is January (2.5 days).
Average snowfall
Delmont, SD
The month with the highest snowfall is December (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Delmont, SD
- Average snowfall days in January:
6.6 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
5.7 days - Average snowfall days in April:
2.3 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:
1.1 days - Average snowfall days in November:
3 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Delmont, 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 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- 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 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Delmont, SD
- Average sunshine days in January:
21.6 days - Average sunshine days in February:
19.3 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
14.7 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
22.8 days - Average sunshine days in December:
21.5 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index
Delmont, 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
Delmont, SD
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility
Delmont, 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).
