September weather forecastSandstone, MN
September
Weather in September
September, the first month of the autumn in Sandstone, is still a pleasant month, with temperature in the range of an average high of 68.9°F (20.5°C) and an average low of 49.6°F (9.8°C).Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a moderately hot 77.5°F (25.3°C) in August to an agreeable 68.9°F (20.5°C). Sandstone's nighttime temperature in September falls to an average of 49.6°F (9.8°C).Humidity
In September, the average relative humidity in Sandstone is 76%.Rainfall
In Sandstone, Minnesota, in September, it is raining for 11.2 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, in Sandstone, there are 120.5 rainfall days, and 20.67" (525mm) of precipitation is accumulated.Snowfall
In Sandstone, snow does not fall in June through September.Daylight
In September, the average length of the day in Sandstone is 12h and 32min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:52 pm CDT.
Sunshine
In Sandstone, the average sunshine in September is 8.5h.UV index
In Sandstone, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Heed the precautions - Suggestions to avoid sunburn are made. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sandstone, MN
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (4.1°F).
Average pressure in September
Sandstone, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Sandstone, MN
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Sandstone, MN
- Average humidity in September: 76%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Sandstone, MN
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is June (2.95").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
Sandstone, MN
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is June (16.2 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Sandstone, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sandstone, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sandstone, MN
- Average daylight in September: 12h and 30min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Sandstone, MN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Sandstone, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Sandstone, MN
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Sandstone, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
