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
In September, Collins experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 74.7°F (23.7°C), closely mirroring the climate in August. An average minimum temperature of 55.4°F (13°C) is recorded during the month of September.Humidity
In Collins, the average relative humidity in September is 77%.Rainfall
In Collins, in September, during 9.5 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, in Collins, there are 102 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
In Collins, snow does not fall in June through September.Daylight
In Collins, Iowa, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 4 in September transforms into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are the temperatures in Collins in September?
What is the average humidity in September in Collins?
How much does it rain in Collins in September?
When it does not snow in Collins?
Does it snow in Collins in September?
How many hours of daylight does Collins have in September?
What time are sunrise and sunset in September in Collins?
How many hours of sunshine does Collins have in September?
What is the UV index reading in September in Collins?
Average temperature in September
Collins, IA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Collins, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Collins, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Collins, IA
- Average humidity in September: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Collins, IA
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (1.69").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in September
Collins, IA
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Collins, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Collins, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Collins, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Collins, IA
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in September
Collins, 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, February, October, November and December (UV index 2).
Average cloud cover in September
Collins, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Collins, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Collins, Iowa, USA
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