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
Roland's average high-temperature in September is a still warm 74.3°F (23.5°C), indicating a subtle variation from August. During September nights, Roland records an average temperature of 55.4°F (13°C).Humidity
In Roland, Iowa, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 12.4 days. Throughout September, 2.99" (76mm) of precipitation is accumulated. In Roland, Iowa, during the entire year, the rain falls for 143.3 days and collects up to 29.25" (743mm) of precipitation.Snowfall
In Roland, Iowa, snow does not fall in June through September.Daylight
In September, the average length of the day in Roland is 12h and 28min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:47 pm. On the last day of September, in Roland, sunrise is at 7:10 am and sunset at 6:56 pm CDT.
Sunshine
In Roland, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Roland?
What is the average humidity in September in Roland?
How much does it rain in Roland in September?
When it does not snow in Roland?
Does it snow in Roland in September?
How many hours of daylight does Roland have in September?
When are sunrise and sunset in September in Roland?
How many hours of sunshine does Roland have in September?
What is the UV index intensity in September in Roland?
Average temperature in September
Roland, IA
- Average high temperature in September: 74.3°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 (25.5°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Roland, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Roland, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Roland, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Roland, IA
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Roland, IA
- Average rainfall days in September: 12.4 days
The months with the highest number of rainy days are May and June (19.2 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Roland, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Roland, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roland, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 2min
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 54min).
Average sunshine days in September
Roland, IA
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (8.5 days).
Average UV index in September
Roland, IA
- 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, October, November and December (UV index 2).
Average cloud cover in September
Roland, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Roland, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Roland, Iowa, USA
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