September weather forecastParker, CO
September
Weather in September
The arrival of September in Parker ushers in the fall season with an observable decline in temperature. Whilst the landscape starts to display autumnal hues, warm days can still be expected. The rainfall decreases significantly to 0.47" (12mm), making outdoor activities more enjoyable. As the days start shortening, one can still relish the remaining warmth before winter sets in. It's a great time for harvest festivals and other autumn celebrations in the region considering the pleasant weather conditions.Temperature
The beginning of September in Parker brings a minor change in the average high-temperature, shifting from a warm 84.4°F (29.1°C) in August to a still moderately hot 77.7°F (25.4°C). Parker's September nights bring a significant temperature shift, averaging at a fresh 52.5°F (11.4°C).Humidity
June, August and September, with an average relative humidity of 43%, are the least humid months.Rainfall
September is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.47" (12mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:42 pm MDT.
Sunshine
The average sunshine in September is 11h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: An average UV index of 5 in September transforms into this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Parker, CO
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
Parker, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in September
Parker, CO
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest months (with the lowest average wind speed) are August and December (6.5mph).
Average humidity in September
Parker, CO
- Average humidity in September: 43%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June, August and September (43%).
Average rainfall in September
Parker, CO
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in September
Parker, CO
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is November (3.4 days).
Average snowfall in September
Parker, CO
- Average snowfall in September: 0"
The month with the highest snowfall is April (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Parker, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Parker, CO
- Average daylight in September: 12h and 24min
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 24min).
- Average sunshine in September: 11h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in September
Parker, CO
- Average sunshine days in September: 21 days
The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in September
Parker, 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
Parker, CO
- Average cloud cover in September: 15
The month with the most cloud cover is April (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 15).
Average visibility in September
Parker, 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).
