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
The advent of September brings a slight shift in average high-temperature, moving from 83.1°F (28.4°C) in August to a still warm 74.3°F (23.5°C). Pleasant Vally Development observes an average nighttime temperature of 52.9°F (11.6°C) during September.Humidity
August and September, with an average relative humidity of 60%, are the least humid months in Pleasant Vally Development.Rainfall
In Pleasant Vally Development, in September, it is raining for 8.9 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, in Pleasant Vally Development, South Dakota, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.Snowfall
In Pleasant Vally Development, snow does not fall in June through September.Daylight
In Pleasant Vally Development, the average length of the day in September is 12h and 31min.On the first day of September in Pleasant Vally Development, 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 is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Pleasant Vally Development?
What is the least humid month in Pleasant Vally Development?
What is the average humidity in September in Pleasant Vally Development?
How many days does it rain in September in Pleasant Vally Development?
When it does not snow in Pleasant Vally Development?
Does it snow in Pleasant Vally Development in September?
What is the average length of the day in September in Pleasant Vally Development?
When are sunrise and sunset in September in Pleasant Vally Development?
How long on average sun shines in September in Pleasant Vally Development?
How high is the UV index in September in Pleasant Vally Development?
Average temperature in September
Pleasant Vally Development, SD
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in September
Pleasant Vally Development, 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
Pleasant Vally Development, SD
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Pleasant Vally Development, SD
- Average humidity in September: 60%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).
Average rainfall in September
Pleasant Vally Development, SD
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Pleasant Vally Development, SD
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Pleasant Vally Development, SD
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Pleasant Vally Development, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Pleasant Vally Development, SD
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Pleasant Vally Development, SD
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).
Average UV index in September
Pleasant Vally Development, SD
- Average UV index in September: 4
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 and November (UV index 1).
Average cloud cover in September
Pleasant Vally Development, SD
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in September
Pleasant Vally Development, SD
- Average visibility in September: 6mi
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).
Pleasant Vally Development, South Dakota, USA
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