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
The shift from August to September includes a small decrease in the average high-temperature, from a moderately hot 79°F (26.1°C) to a pleasant 73°F (22.8°C). During September, Springbrook consistently records a temperature low averaging a fresh 54°F (12.2°C).Humidity
In Springbrook, the average relative humidity in September is 79%.Rainfall
In Springbrook, in September, during 12.4 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Springbrook, during the entire year, the rain falls for 145.6 days and collects up to 28.9" (734mm) 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 in Springbrook, sunrise is at 6:28 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:44 pm CDT.
Sunshine
In Springbrook, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
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 Springbrook have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Springbrook, IA
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
Springbrook, 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
Springbrook, IA
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Springbrook, 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
Springbrook, IA
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in September
Springbrook, IA
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in September
Springbrook, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Springbrook, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 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
Springbrook, 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 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Springbrook, IA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in September
Springbrook, IA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Springbrook, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in September
Springbrook, 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).
Springbrook, Iowa, USA
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