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
Truro's transition into September involves a gentle shift in temperature, receding from a moderately hot 81.5°F (27.5°C) in August to a still warm 75.4°F (24.1°C). Throughout September, the average low-temperature dips to a refreshing 55.9°F (13.3°C).Humidity
The average relative humidity in September in Truro is 76%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. In Truro, Iowa, during the entire year, the rain falls for 133 days and collects up to 26.14" (664mm) of precipitation.Snowfall
In Truro, Iowa, snow does not fall in June through September.Daylight
In Truro, Iowa, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:47 pm. On the last day of September, in Truro, sunrise is at 7:11 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Truro, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Truro in September?
What is the average humidity in September in Truro?
How many days does it rain in September in Truro?
When it does not snow in Truro?
Does it snow in Truro in September?
How many hours of daylight does Truro have in September?
When are sunrise and sunset in September in Truro?
How many hours of sunshine does Truro have in September?
What is the UV index intensity in September in Truro?
Average temperature in September
Truro, IA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Truro, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Truro, IA
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Truro, IA
- Average humidity in September: 76%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Truro, IA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Truro, IA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in September
Truro, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Truro, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Truro, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Truro, IA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Truro, IA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (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
Truro, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in September
Truro, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Truro, Iowa, USA
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