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
September's arrival subtly correlates with a reduction in the average high-temperature, down from 83.7°F (28.7°C) in August to a still warm 75.6°F (24.2°C). Mack receives a consistent average low-temperature of 52.5°F (11.4°C) in September, a substantial dip from the day's heat.Humidity
In Mack, Colorado, the average relative humidity in September is 39%.Rainfall
In September, in Mack, Colorado, the rain falls for 9.7 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. Throughout the year, in Mack, there are 107.7 rainfall days, and 9.33" (237mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Mack is 12h and 26min.On the first day of September, sunrise is at 6:44 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:59 pm MDT.
Sunshine
In Mack, Colorado, the average sunshine in September is 11h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the average September temperature in Mack?
What is the average humidity in September in Mack?
How much does it rain in Mack in September?
When it does not snow in Mack?
Does it snow in Mack in September?
How many hours of daylight does Mack have in September?
What time are sunrise and sunset in September in Mack?
How many hours of sunshine does Mack have in September?
How high is the UV index in September in Mack?
Average temperature in September
Mack, CO
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Mack, CO
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).
Average wind speed in September
Mack, CO
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in September
Mack, CO
- Average humidity in September: 39%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is June (30%).
Average rainfall in September
Mack, CO
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is October (1.02").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Mack, CO
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in September
Mack, CO
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.41").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mack, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mack, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in September
Mack, CO
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in September
Mack, 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
Mack, CO
- Average cloud cover in September: 11
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and September (Cloud cover 11).
Average visibility in September
Mack, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Mack, Colorado, USA
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