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 signifies a minor drop in average high-temperature, transitioning from a hot 86.2°F (30.1°C) in August to a moderately hot 78.8°F (26°C). Contrasting the daytime warmth, Westplains's September nights cool down to an average of 56.3°F (13.5°C).Humidity
September is the least humid month, with an average relative humidity of 47%.Rainfall
In Westplains, during September, the rain falls for 10.1 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Westplains, Colorado, during the entire year, the rain falls for 123.2 days and collects up to 15.39" (391mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Westplains, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:21 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:37 pm MDT.
Sunshine
The average sunshine in September is 10.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Westplains in September?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Westplains?
Does it snow in September?
How many hours of daylight does Westplains have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Westplains have in September?
What is the UV index intensity in September?
Average temperature in September
Westplains, CO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Westplains, CO
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Westplains, CO
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).
Average humidity in September
Westplains, CO
- Average humidity in September: 47%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is September (47%).
Average rainfall in September
Westplains, CO
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Westplains, CO
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Westplains, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Westplains, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Westplains, CO
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Westplains, CO
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Westplains, CO
- Average UV index in September: 5
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
Westplains, CO
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Westplains, 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).
Westplains, Colorado, USA
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