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
The arrival of September indicates a decrease in the average high-temperature, moving from a warm 78.4°F (25.8°C) in August to an agreeable 69.3°F (20.7°C). In Trommald, September's nights observe an average temperature dip to a chilly 49.1°F (9.5°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Trommald, during September, the rain falls for 10.1 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Trommald, during the entire year, the rain falls for 108 days and collects up to 19.88" (505mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:37 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:57 pm CDT.
Sunshine
In Trommald, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Trommald have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Trommald, MN
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).
Average pressure in September
Trommald, 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
Trommald, 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
Trommald, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Trommald, MN
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Trommald, MN
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.2 days).
Average snowfall in September
Trommald, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Trommald, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Trommald, 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 18min).
Average sunshine days in September
Trommald, MN
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is February (10.1 days).
Average UV index in September
Trommald, 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
Trommald, MN
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Trommald, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Trommald, Minnesota, USA
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