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 average high-temperature slightly decreases in September, shifting from a warm 78.1°F (25.6°C) in August to an agreeable 71.6°F (22°C). Heidelberg's average low-temperature in September is measured at a fresh 52.7°F (11.5°C).Humidity
The average relative humidity in September is 76%.Rainfall
In Heidelberg, Minnesota, during September, the rain falls for 11.8 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 126.1 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:38 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Heidelberg, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Heidelberg in September?
What is the average humidity in September in Heidelberg?
How much does it rain in September?
When it does not snow in Heidelberg?
Does it snow in September?
How many hours of daylight does Heidelberg have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Heidelberg have in September?
How high is the UV index in September?
Average temperature in September
Heidelberg, MN
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in September
Heidelberg, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Heidelberg, MN
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Heidelberg, MN
- Average humidity in September: 76%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (72%).
Average rainfall in September
Heidelberg, MN
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Heidelberg, MN
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Heidelberg, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Heidelberg, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heidelberg, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Heidelberg, MN
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Heidelberg, MN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in September
Heidelberg, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Heidelberg, 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, February and December (4mi).
Heidelberg, Minnesota, USA
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