Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September indicates a shift in the average high-temperature, from August's warm 81.9°F (27.7°C) to an agreeable 72.7°F (22.6°C). Throughout September nights, Barnard registers an average low-temperature of 52.2°F (11.2°C).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 61%.Rainfall
In Barnard, South Dakota, during September, the rain falls for 8.4 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Barnard, during the entire year, the rain falls for 92.3 days and collects up to 15.28" (388mm) of precipitation.Snowfall
In Barnard, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Barnard, sunrise is at 6:56 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:15 pm CDT.
Sunshine
The average sunshine in September in Barnard, South Dakota, is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are the temperatures in Barnard in September?
What are the least humid months in Barnard?
What is the average humidity in September in Barnard?
How much does it rain in Barnard in September?
When it does not snow in Barnard?
Does it snow in Barnard in September?
How many hours of daylight does Barnard have in September?
When is the sunrise / sunset in September in Barnard?
How long on average sun shines in September in Barnard?
How high is the UV index in September in Barnard?
Average temperature in September
Barnard, SD
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Barnard, SD
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Barnard, SD
- Average wind speed in September: 9.6mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in September
Barnard, SD
- Average humidity in September: 61%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are August and September (61%).
Average rainfall in September
Barnard, SD
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Barnard, SD
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is June (14.3 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in September
Barnard, SD
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Barnard, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Barnard, SD
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Barnard, SD
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in September
Barnard, SD
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Barnard, SD
- Average cloud cover in September: 27
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Barnard, SD
- Average visibility in September: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and March (5mi).
Barnard, South Dakota, USA
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