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 arrival of September, Massey notices a mild change in the average high-temperature, sliding from August's warm 78.4°F (25.8°C) to a pleasant 72.5°F (22.5°C). The low-temperature in Massey averages to a fresh 53.1°F (11.7°C) during the nights of September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Massey, during September, the rain falls for 11.7 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Massey, during the entire year, the rain falls for 140.9 days and collects up to 28.11" (714mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:28 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:44 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In Massey, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Massey in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Massey have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Massey, IA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in September
Massey, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Massey, IA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Massey, IA
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Massey, IA
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Massey, IA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Massey, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Massey, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Massey, 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 6min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Massey, IA
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Massey, 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 and December (UV index 1).
Average cloud cover in September
Massey, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Massey, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Massey, Iowa, USA
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