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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 78.1°F (25.6°C) to a pleasant 70.7°F (21.5°C). During September, Annandale's temperature falls to a steady low-temperature average of 51.8°F (11°C).Humidity
In Annandale, the average relative humidity in September is 74%.Rainfall
In Annandale, during September, the rain falls for 11.2 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 116.4 rainfall days, and 19.41" (493mm) of precipitation is accumulated.Snowfall
In Annandale, snow does not fall in June through September.Daylight
In Annandale, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Annandale, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Annandale, MN
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (19.2°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (6.4°F).
Average pressure in September
Annandale, MN
- Average pressure in September: 29.99"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Annandale, MN
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in September
Annandale, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in September
Annandale, MN
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Annandale, MN
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (1.7 days).
Average snowfall in September
Annandale, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Annandale, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Annandale, MN
- 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 5min
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 24min).
Average sunshine days in September
Annandale, MN
- Average sunshine days in September: 16.6 days
The months with the most sunshine days are January and October (20.3 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Annandale, 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
Annandale, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Annandale, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Annandale, Minnesota, USA
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