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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 78.1°F (25.6°C) to a pleasant 72.7°F (22.6°C). In September, Gruver experiences a temperature dip to an average of 53.8°F (12.1°C) at night.Humidity
In Gruver, the average relative humidity in September is 74%.Rainfall
In Gruver, in September, it is raining for 11.7 days, with typically 2.28" (58mm) of accumulated precipitation. In Gruver, during the entire year, the rain falls for 123.7 days and collects up to 23.66" (601mm) of precipitation.Snowfall
In Gruver, Iowa, snow does not fall in June through September.Daylight
In Gruver, Iowa, the average length of the day in September is 12h and 29min.On the first day of September in Gruver, sunrise is at 6:43 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:01 pm CDT.
Sunshine
In Gruver, Iowa, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September in Gruver is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the average September temperature in Gruver?
What is the average humidity in September in Gruver?
How much does it rain in Gruver in September?
When it does not snow in Gruver?
Does it snow in Gruver in September?
What is the average length of the day in September in Gruver?
When is the sunrise / sunset in September in Gruver?
How long on average sun shines in September in Gruver?
What is the UV index intensity in September in Gruver?
Average temperature in September
Gruver, IA
- Average high temperature in September: 72.7°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 (22.5°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Gruver, IA
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Gruver, IA
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Gruver, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Gruver, IA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Gruver, IA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Gruver, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Gruver, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gruver, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Gruver, IA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Gruver, 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
Gruver, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in September
Gruver, 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).
Gruver, Iowa, USA
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