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 shift from August to September coincides with a small decrease in the average high-temperature, down to a refreshing 66.2°F (19°C) from a moderately hot 73.6°F (23.1°C). McCoy, in September, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 37°F (2.8°C).Humidity
In McCoy, the average relative humidity in September is 54%.Rainfall
September is the month with the least rainfall in McCoy. Rain falls for 9.5 days and accumulates 0.67" (17mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In McCoy, during the entire year, snow falls for 103.1 days and aggregates up to 76.73" (1949mm) of snow.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:50 pm MDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In McCoy, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does McCoy have in September?
What is the UV index intensity in September?
Average temperature in September
McCoy, CO
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is July (75.2°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 37°F
The month with the highest average low temperature is July (43.3°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in September
McCoy, CO
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in September
McCoy, CO
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
McCoy, CO
- Average humidity in September: 54%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (49%).
Average rainfall in September
McCoy, CO
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is April (2.4").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in September
McCoy, CO
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (6.3 days).
Average snowfall in September
McCoy, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (14.13").
The months with the least snowfall are July and August (0").
Average snowfall days in September
McCoy, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (19.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
McCoy, 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: 11h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in September
McCoy, CO
- Average sunshine days in September: 17.6 days
The months with the most sunshine days are September and November (17.6 days).
The month with the least sunshine days is April (5.9 days).
Average UV index in September
McCoy, CO
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
McCoy, CO
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in September
McCoy, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
McCoy, Colorado, USA
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