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, the same as December, in Erwin, South Dakota, is another subzero cold winter month, with an average temperature ranging between max 19.4°F (-7°C) and min 5.5°F (-14.7°C). January is the coldest month, with an average high-temperature of 19.4°F (-7°C) and an average low-temperature of 5.5°F (-14.7°C). Weather in January »
Weather in February
February, the last month of the winter in Erwin, is another freezing cold month, with an average temperature ranging between max 22.5°F (-5.3°C) and min 8.4°F (-13.1°C). In Erwin, the average high-temperature in February is practically the same as in January - a still subzero cold 22.5°F (-5.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Erwin, South Dakota, with an average temperature ranging between max 38.1°F (3.4°C) and min 23.7°F (-4.6°C). In Erwin, the average high-temperature in March soars, from a subzero cold 22.5°F (-5.3°C) in February, to a wintry 38.1°F (3.4°C). Weather in March »
Weather in April
April in Erwin, South Dakota, is a cool spring month, with an average temperature varying between 51.6°F (10.9°C) and 35.2°F (1.8°C). In April, the average high-temperature increases from a cold 38.1°F (3.4°C) in March to a fresh 51.6°F (10.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Erwin, South Dakota, with an average temperature fluctuating between 64.6°F (18.1°C) and 46.9°F (8.3°C). In Erwin, the average high-temperature in May increases from a cool 51.6°F (10.9°C) in April to a comfortable 64.6°F (18.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Erwin, South Dakota, with an average temperature ranging between min 56.8°F (13.8°C) and max 74.5°F (23.6°C). In June, the average high-temperature rises from an enjoyable 64.6°F (18.1°C) in May to a moderately hot 74.5°F (23.6°C). Weather in June »
Weather in July
July, like June, in Erwin, South Dakota, is another warm summer month, with an average temperature varying between 80.8°F (27.1°C) and 60.8°F (16°C). The warmest month is July, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 60.8°F (16°C). The average heat index in July is computed to be 84.2°F (29°C). Weather in July »
Weather in August
August, the last month of the summer in Erwin, is also a moderately hot month, with an average temperature varying between 59°F (15°C) and 80.1°F (26.7°C). In Erwin, the average high-temperature in August is almost the same as in July - a still warm 80.1°F (26.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Erwin, South Dakota, with an average temperature fluctuating between 51.3°F (10.7°C) and 71.6°F (22°C). In Erwin, the average high-temperature in September slightly decreases from a moderately hot 80.1°F (26.7°C) in August to a pleasant 71.6°F (22°C). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Erwin, South Dakota, with an average temperature ranging between min 39°F (3.9°C) and max 54.3°F (12.4°C). In October, the average high-temperature significantly decreases from an agreeable 71.6°F (22°C) in September to a cool 54.3°F (12.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Erwin, South Dakota, with an average temperature ranging between min 26.4°F (-3.1°C) and max 40.1°F (4.5°C). In November, the average high-temperature decreases from a cool 54.3°F (12.4°C) in October to a cold 40.1°F (4.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Erwin, South Dakota, with temperature in the range of an average high of 23.7°F (-4.6°C) and an average low of 12.4°F (-10.9°C). In December, the average high-temperature declines considerably from a cold 40.1°F (4.5°C) in November to a subzero cold 23.7°F (-4.6°C). Weather in December »
[Resources]FAQ
What is the coldest month in Erwin?
With an average high-temperature of 19.4°F (-7°C) and an average low-temperature of 5.5°F (-14.7°C), January is the coldest month.
What is the most humid month in Erwin?
The most humid month is January, with an average relative humidity of 90%.
What is the driest month in Erwin?
The months with the least rainfall in Erwin are January and February Rain falls for 2.9 days and accumulates 0.59" (15mm) of rain.
How many days does it rain in Erwin?
In Erwin, South Dakota, during the entire year, the rain falls for 112.3 days and collects up to 18.78" (477mm) of precipitation.
When does it snow in Erwin?
Months with snowfall are January through May, October through December.
When does it snow the most in Erwin?
The months with the most snowfall in Erwin are January and December, with an average 3.74" (95mm) of accumulated snow.
How much does it snow in Erwin?
In Erwin, South Dakota, during the entire year, snow falls for 64.3 days and aggregates up to 17.56" (446mm) of snow.
What is the month with the least sunshine in Erwin?
The month with the least sunshine in Erwin, South Dakota, is January, with an average of 3.6h of sunshine.
When is the lowest UV index in Erwin?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Erwin?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Erwin, South Dakota, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Erwin?
June is the month with the most rainfall in Erwin. Rain falls for 17.2 days and accumulates 3.19" (81mm) of precipitation.
When it does not snow in Erwin?
In Erwin, South Dakota, snow does not fall in June through September.
When are the longest days in Erwin?
With an average of 15h and 29min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Erwin?
The months with the highest UV index in Erwin are June and July, with an average maximum UV index of 6.
What is the warmest month in Erwin?
With an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 60.8°F (16°C), July is the warmest month.
What month has the most sunshine in Erwin?
With an average of 10.7h of sunshine, July has the most sunshine of the year.
What is the least humid month in Erwin?
The months with the lowest humidity are September and October, with an average relative humidity of 68%.
What is the month with the shortest days in Erwin?
The month with the shortest days in Erwin, South Dakota, is December, with an average of 8h and 54min of daylight.
Average temperature
Erwin, SD
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure
Erwin, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.92"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:
29.97"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
Erwin, SD
- Average wind speed in January:
11mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.6mph - Average wind speed in May:
10.3mph - Average wind speed in June:
9.4mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.6mph - Average wind speed in September:
10mph - Average wind speed in October:
11.2mph - Average wind speed in November:
11mph - Average wind speed in December:
11mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity
Erwin, SD
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).
Average rainfall
Erwin, SD
- Average rainfall in January:
0.59" - Average rainfall in February:
0.59" - Average rainfall in March:
1.02" - Average rainfall in April:
1.46" - Average rainfall in May:
2.52" - Average rainfall in June:
3.19"
- Average rainfall in July:
2.91" - Average rainfall in August:
1.81" - Average rainfall in September:
1.57" - Average rainfall in October:
1.73" - Average rainfall in November:
0.63" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days
Erwin, SD
- Average rainfall days in January:
2.9 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
8.3 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).
Average snowfall
Erwin, SD
- Average snowfall in January:
3.74" - Average snowfall in February:
3.35" - Average snowfall in March:
2.2" - Average snowfall in April:
1.46" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Erwin, SD
- Average snowfall days in January:
14.4 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
10 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
0.8 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:
0.1 days - Average snowfall days in October:
2.3 days - Average snowfall days in November:
7.1 days - Average snowfall days in December:
13 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Erwin, SD
- Average daylight in January:
9h and 17min - Average daylight in February:
10h and 29min - Average daylight in March:
11h and 58min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 49min - Average daylight in June:
15h and 29min
- Average daylight in July:
15h and 9min - Average daylight in August:
13h and 59min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 58min - Average daylight in November:
9h and 37min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 24min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Erwin, SD
- Average sunshine days in January:
15.1 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
18.2 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Erwin, SD
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Erwin, SD
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Erwin, 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).
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