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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 78.3°F (25.7°C) in August to a pleasant 72.9°F (22.7°C). An average low-temperature of 53.8°F (12.1°C) marks the month of September in Gillett Grove.Humidity
In September, the average relative humidity in Gillett Grove is 74%.Rainfall
In Gillett Grove, during September, the rain falls for 10.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Gillett Grove, during the entire year, the rain falls for 112.3 days and collects up to 15.31" (389mm) of precipitation.Snowfall
In Gillett Grove, snow does not fall in June through September.Daylight
The average length of the day in September in Gillett Grove is 12h and 29min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:54 pm. On the last day of September, in Gillett Grove, sunrise is at 7:17 am and sunset at 7:02 pm CDT.
Sunshine
In September, the average sunshine in Gillett Grove is 9h.UV index
In Gillett Grove, Iowa, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What are September temperatures in Gillett Grove?
What is the average humidity in September in Gillett Grove?
How many days does it rain in September in Gillett Grove?
When it does not snow in Gillett Grove?
Does it snow in Gillett Grove in September?
What is the average length of the day in September in Gillett Grove?
When are sunrise and sunset in September in Gillett Grove?
How long on average sun shines in September in Gillett Grove?
What is the UV index reading in September in Gillett Grove?
Average temperature in September
Gillett Grove, IA
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 53.8°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 (10.6°F).
Average pressure in September
Gillett Grove, IA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Gillett Grove, IA
- Average wind speed in September: 9mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Gillett Grove, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Gillett Grove, IA
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Gillett Grove, IA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in September
Gillett Grove, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Gillett Grove, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gillett Grove, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Gillett Grove, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Gillett Grove, 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 and February (UV index 1).
Average cloud cover in September
Gillett Grove, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Gillett Grove, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Gillett Grove, Iowa, USA
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