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
September's presence marks an average high-temperature of a still warm 73.6°F (23.1°C), subtly varied from August's 78.6°F (25.9°C). Gladbrook, in September, experiences an average temperature of 54.7°F (12.6°C) at night.Humidity
The average relative humidity in September in Gladbrook is 78%.Rainfall
In Gladbrook, during September, the rain falls for 12.7 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Gladbrook, during the entire year, the rain falls for 144.6 days and collects up to 30.75" (781mm) of precipitation.Snowfall
June through September are months without snowfall in Gladbrook.Daylight
In Gladbrook, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:53 pm CDT.
Sunshine
In September, the average sunshine in Gladbrook is 9.3h.UV index
In Gladbrook, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Gladbrook?
What is the average humidity in September in Gladbrook?
How much does it rain in Gladbrook in September?
When it does not snow in Gladbrook?
Does it snow in Gladbrook in September?
How many hours of daylight does Gladbrook have in September?
What time are sunrise and sunset in September in Gladbrook?
How long on average sun shines in September in Gladbrook?
What is the UV index reading in September in Gladbrook?
Average temperature in September
Gladbrook, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Gladbrook, IA
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Gladbrook, 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
Gladbrook, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Gladbrook, IA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (4.76").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Gladbrook, IA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is June (19.6 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Gladbrook, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Gladbrook, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gladbrook, 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 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Gladbrook, IA
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are October and November (16.9 days).
The month with the least sunshine days is June (7.9 days).
Average UV index in September
Gladbrook, IA
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Gladbrook, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Gladbrook, 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).
Gladbrook, Iowa, USA
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