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
With the onset of September, Ossian experiences a modest temperature adjustment, with the average high-temperature gently receding from a warm 77.2°F (25.1°C) in August to an agreeable 70.7°F (21.5°C). In Ossian, an average nighttime temperature of 52°F (11.1°C) is expected during September.Humidity
In September, the average relative humidity in Ossian, Iowa, is 80%.Rainfall
In September, in Ossian, the rain falls for 13.3 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. In Ossian, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.Snowfall
June through September are months without snowfall in Ossian, Iowa.Daylight
In Ossian, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Ossian, Iowa, 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 exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the average September temperature in Ossian?
What is the average humidity in September in Ossian?
How many days does it rain in September in Ossian?
When it does not snow in Ossian?
Does it snow in Ossian in September?
How many hours of daylight does Ossian have in September?
What time are sunrise and sunset in September in Ossian?
How long on average sun shines in September in Ossian?
What is the UV index intensity in September in Ossian?
Average temperature in September
Ossian, IA
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Ossian, IA
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Ossian, IA
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Ossian, IA
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Ossian, IA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Ossian, IA
- Average rainfall days in September: 13.3 days
The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Ossian, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ossian, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ossian, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Ossian, IA
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in September
Ossian, IA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Ossian, IA
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Ossian, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Ossian, Iowa, USA
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