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, the meteorological conditions change slightly, with the average high-temperature moving from a tropical 87.8°F (31°C) in August to a moderately hot 79.7°F (26.5°C). September witnesses a substantial contrast between the daytime highs and the average low of 53.4°F (11.9°C).Humidity
August and September, with an average relative humidity of 42%, are the least humid months.Rainfall
In September, the rain falls for 4.4 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 66.3 rainfall days, and 4.02" (102mm) of precipitation is accumulated.Snowfall
In Platteville, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm MDT.
Sunshine
The average sunshine in September in Platteville is 10.9h.UV index
In Platteville, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Platteville in September?
What is the least humid month?
What is the average humidity in September in Platteville?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Platteville have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Platteville have in September?
What is the UV index intensity in September?
Average temperature in September
Platteville, CO
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
Platteville, CO
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Platteville, CO
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in September
Platteville, CO
- Average humidity in September: 42%
The months with the highest relative humidity are January and February (64%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in September
Platteville, CO
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is May (0.67").
The driest months (with the least rainfall) are January and December (0.12").
Average rainfall days in September
Platteville, CO
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and November (3 days).
Average snowfall in September
Platteville, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Platteville, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Platteville, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Platteville, CO
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is December (26.3 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in September
Platteville, CO
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Platteville, CO
- Average cloud cover in September: 15
The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 15).
Average visibility in September
Platteville, CO
- 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).
Platteville, Colorado, USA
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