September weather forecastSantiago, MN
September
Weather in September
September, the first month of the autumn in Santiago, is still a pleasant month, with an average temperature ranging between min 51.1°F (10.6°C) and max 69.8°F (21°C).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's warm 77.5°F (25.3°C) to an agreeable 69.8°F (21°C). Santiago records an average nighttime low-temperature of 51.1°F (10.6°C) throughout September.Humidity
The average relative humidity in September in Santiago is 75%.Rainfall
In Santiago, in September, it is raining for 11.1 days, with typically 1.42" (36mm) of accumulated precipitation. In Santiago, during the entire year, the rain falls for 120.8 days and collects up to 20.2" (513mm) of precipitation.Snowfall
In Santiago, snow does not fall in June through September.Daylight
In Santiago, the average length of the day in September is 12h and 31min.On the first day of September in Santiago, sunrise is at 6:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:56 pm CDT.
Sunshine
In Santiago, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Minimize direct exposure to the Sun during midday when its radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Santiago, MN
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure in September
Santiago, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Santiago, MN
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Santiago, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (71%).
Average rainfall in September
Santiago, MN
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is June (3.31").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Santiago, MN
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Santiago, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Santiago, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Santiago, MN
- Average daylight in September: 12h and 30min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Santiago, MN
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Santiago, 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, November and December (UV index 1).
Average cloud cover in September
Santiago, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Santiago, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
