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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a hot 89.8°F (32.1°C) in August to a moderately hot 83.1°F (28.4°C). In September, Lamar experiences an average nighttime temperature of 61.7°F (16.5°C).Heat index
For most parts of September, the heat index is calculated to be 82.4°F (28°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
In Lamar, the average relative humidity in September is 45%.Rainfall
In Lamar, during September, the rain falls for 6.5 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Lamar, during the entire year, the rain falls for 79.5 days and collects up to 8.9" (226mm) of precipitation.Snowfall
June through September are months without snowfall in Lamar.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:20 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:34 pm MDT.
Sunshine
In Lamar, the average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September in Lamar, Colorado, is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 5 in September transforms into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Lamar?
Does it snow in September?
How many hours of daylight does Lamar have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Lamar have in September?
What is the UV index intensity in September?
Average temperature in September
Lamar, CO
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in September
Lamar, CO
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Lamar, CO
- Average wind speed in September: 10.9mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).
Average humidity in September
Lamar, CO
- Average humidity in September: 45%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).
Average rainfall in September
Lamar, CO
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in September
Lamar, CO
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Lamar, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lamar, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lamar, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Lamar, CO
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in September
Lamar, CO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Lamar, CO
- Average cloud cover in September: 14
The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in September
Lamar, 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).
Lamar, Colorado, USA
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