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
Monument, Colorado, in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 75.9°F (24.4°C) to a pleasant 70.5°F (21.4°C). September nights in Monument bring a pronounced temperature shift, with averages hovering around a chilly 47.3°F (8.5°C).Humidity
In September, the average relative humidity in Monument is 51%.Rainfall
In September, in Monument, Colorado, the rain falls for 11.5 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Monument, during the entire year, the rain falls for 117.5 days and collects up to 19.41" (493mm) of precipitation.Snowfall
Months with snowfall in Monument, Colorado, are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Monument, during the entire year, snow falls for 68.6 days and aggregates up to 50.51" (1283mm) of snow.Daylight
In September, the average length of the day in Monument is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm MDT.
Sunshine
In Monument, the average sunshine in September is 10.8h.UV index
In September, the average daily maximum UV index in Monument is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Monument in September?
What is the average humidity in September in Monument?
How much does it rain in Monument in September?
When does it start snowing in Monument?
What is the average length of the day in September in Monument?
What time are sunrise and sunset in September in Monument?
How many hours of sunshine does Monument have in September?
What is the UV index reading in September in Monument?
Average temperature in September
Monument, CO
- Average high temperature in September: 70.5°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is July (54°F).
The coldest month (with the lowest average low temperature) is December (17.1°F).
Average pressure in September
Monument, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed in September
Monument, CO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Monument, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (69%).
The month with the lowest relative humidity is June (48%).
Average rainfall in September
Monument, CO
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January, November and December (0.63").
Average rainfall days in September
Monument, CO
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in September
Monument, CO
- Average snowfall in September: 0.08"
The month with the highest snowfall is April (9.29").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Monument, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Monument, 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: 10h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).
Average sunshine days in September
Monument, CO
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in September
Monument, CO
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Monument, CO
- Average cloud cover in September: 19
The months with the most cloud cover are April and May (Cloud cover 30).
The months with the least cloud cover are September, October and November (Cloud cover 19).
Average visibility in September
Monument, 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).
Monument, Colorado, USA
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