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 onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 78.6°F (25.9°C) in August to a pleasant 69.8°F (21°C). Merrifield, in September, experiences an average temperature of 49.1°F (9.5°C) at night.Humidity
The average relative humidity in September is 73%.Rainfall
In Merrifield, during September, the rain falls for 9.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Merrifield, during the entire year, the rain falls for 104.2 days and collects up to 17.13" (435mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Merrifield, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Enhance your sun protection with tightly woven, yet airy clothing.
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 many days does it rain in September?
When it does not snow?
Does it snow in Merrifield in September?
How many hours of daylight does Merrifield have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Merrifield have in September?
What is the UV index intensity in September?
Average temperature in September
Merrifield, MN
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (3.7°F).
Average pressure in September
Merrifield, MN
- Average pressure in September: 29.98"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
Merrifield, MN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Merrifield, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Merrifield, MN
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Merrifield, MN
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.8 days).
Average snowfall in September
Merrifield, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.67").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Merrifield, 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
Merrifield, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Merrifield, MN
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Merrifield, 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
Merrifield, MN
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Merrifield, MN
- Average visibility in September: 6mi
The months with the highest visibility are May, June, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Merrifield, Minnesota, USA
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