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 aligns with a minor decrease in average high-temperatures, from August's 80.1°F (26.7°C) to a still warm 73.6°F (23.1°C). From the height of daytime heat, the temperature recedes to an average of 50.7°F (10.4°C) at night during September.Humidity
In Trinidad, the average relative humidity in September is 51%.Rainfall
In Trinidad, during September, the rain falls for 11.6 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, in Trinidad, there are 102.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Trinidad, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:42 pm MDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September in Trinidad?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Trinidad?
When are sunrise and sunset in September?
How many hours of sunshine does Trinidad have in September?
What is the UV index intensity in September?
Average temperature in September
Trinidad, CO
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in September
Trinidad, CO
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is April (29.87"Hg).
Average wind speed in September
Trinidad, CO
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Trinidad, CO
- Average humidity in September: 51%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Trinidad, CO
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is November (0.39").
Average rainfall days in September
Trinidad, CO
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Trinidad, CO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Trinidad, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Trinidad, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Trinidad, CO
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Trinidad, CO
- Average UV index in September: 5
The month with the highest UV index is June (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
Trinidad, CO
- Average cloud cover in September: 16
The months with the most cloud cover are February and April (Cloud cover 23).
The month with the least cloud cover is October (Cloud cover 15).
Average visibility in September
Trinidad, 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).
Trinidad, Colorado, USA
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