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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a hot 86.7°F (30.4°C) in August to a warm 79.5°F (26.4°C). Yuma observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 56.8°F (13.8°C) throughout the month of September.Humidity
With an average relative humidity of 49%, September is the least humid month.Rainfall
In Yuma, in September, during 7 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Yuma, during the entire year, the rain falls for 97.4 days and collects up to 12.52" (318mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Yuma, during the entire year, snow falls for 34.6 days and aggregates up to 14.09" (358mm) of snow.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:34 pm MDT.
Sunshine
In Yuma, the average sunshine in September is 10.1h.UV index
In Yuma, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the least humid month?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Yuma, CO
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in September
Yuma, CO
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Yuma, CO
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
Yuma, CO
- Average humidity in September: 49%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is September (49%).
Average rainfall in September
Yuma, CO
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are January and November (0.43").
Average rainfall days in September
Yuma, CO
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
Yuma, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Yuma, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Yuma, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Yuma, CO
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in September
Yuma, CO
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Yuma, CO
- Average cloud cover in September: 18
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
Yuma, 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).
Yuma, Colorado, USA
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