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
Tolstoy's September weather comes with a decrease in average high-temperatures, moving from a moderately hot 83.8°F (28.8°C) in August to a still warm 74.5°F (23.6°C). Tolstoy's temperature tends to fall to an average low of 54.5°F (12.5°C) during the nights of September.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 56%.Rainfall
In Tolstoy, during September, the rain falls for 8.5 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Tolstoy, South Dakota, during the entire year, the rain falls for 97.8 days and collects up to 16.65" (423mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Tolstoy is 12h and 31min.On the first day of the month, sunrise is at 7:01 am and sunset at 8:15 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:20 pm CDT.
Sunshine
In Tolstoy, South Dakota, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Tolstoy is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Tolstoy in September?
What are the least humid months in Tolstoy?
What is the average humidity in September in Tolstoy?
How many days does it rain in September in Tolstoy?
When it does not snow in Tolstoy?
Does it snow in Tolstoy in September?
How many hours of daylight does Tolstoy have in September?
What time are sunrise and sunset in September in Tolstoy?
How many hours of sunshine does Tolstoy have in September?
How high is the UV index in September in Tolstoy?
Average temperature in September
Tolstoy, SD
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in September
Tolstoy, SD
- Average pressure in September: 29.95"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Tolstoy, SD
- Average wind speed in September: 11.1mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in September
Tolstoy, SD
- Average humidity in September: 56%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).
Average rainfall in September
Tolstoy, SD
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Tolstoy, SD
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in September
Tolstoy, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Tolstoy, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Tolstoy, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Tolstoy, SD
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Tolstoy, 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, November and December (UV index 1).
Average cloud cover in September
Tolstoy, SD
- Average cloud cover in September: 25
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in September
Tolstoy, 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).
Tolstoy, South Dakota, USA
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