September weather forecastDunkirk, IN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Dunkirk, Indiana, with temperature in the range of an average high of 73.8°F (23.2°C) and an average low of 56.3°F (13.5°C).Temperature
September's onset brings a negligible change in high-temperatures, falling from a moderately hot 79.3°F (26.3°C) in August to a still warm 73.8°F (23.2°C). Throughout September, the temperature in Dunkirk tends to fall to a consistent average low of 56.3°F (13.5°C).Humidity
The average relative humidity in September in Dunkirk, Indiana, is 79%.Rainfall
In Dunkirk, during September, the rain falls for 14.4 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Dunkirk, Indiana, during the entire year, the rain falls for 169.1 days and collects up to 30.98" (787mm) of precipitation.Snowfall
May through September are months without snowfall in Dunkirk, Indiana.Daylight
In September, the average length of the day in Dunkirk is 12h and 27min.On the first day of September, sunrise is at 7:08 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:24 pm EDT.
Sunshine
In September, the average sunshine in Dunkirk is 8h.UV index
In Dunkirk, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dunkirk, IN
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Dunkirk, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Dunkirk, IN
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Dunkirk, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Dunkirk, IN
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in September
Dunkirk, IN
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in September
Dunkirk, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Dunkirk, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dunkirk, IN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Dunkirk, IN
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is May (8.9 days).
Average UV index in September
Dunkirk, IN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Dunkirk, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are June, July and August (Cloud cover 33).
Average visibility in September
Dunkirk, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
