September weather forecastHowes, SD
September
Weather in September
September, the first month of the autumn in Howes, is still a warm month, with an average temperature fluctuating between 75.4°F (24.1°C) and 56.3°F (13.5°C).Temperature
September's onset brings a slight change in high-temperatures, falling from 84.7°F (29.3°C) in August to a still moderately hot 75.4°F (24.1°C). In the month of September, the nighttime temperature dips to a steady average of 56.3°F (13.5°C).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 49%.Rainfall
In Howes, in September, during 7.9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, there are 99.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Howes, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:30 pm MDT.
Sunshine
The average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September in Howes is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Howes, SD
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Howes, SD
- Average pressure in September: 29.94"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Howes, SD
- Average wind speed in September: 11.3mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).
Average humidity in September
Howes, SD
- Average humidity in September: 49%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall in September
Howes, SD
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Howes, SD
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).
Average snowfall in September
Howes, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Howes, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Howes, SD
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Howes, SD
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in September
Howes, SD
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Howes, SD
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in September
Howes, SD
- Average visibility in September: 6mi
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).
