September weather forecastLoveland, CO

September
Weather in September
September marks the beginning of the fall season in the city of Loveland. The weather undergoes a noticeable shift with a drop in maximum temperature to 77.9°F (25.5°C). Loveland's landscape blooms in an array of autumn hues, creating a picturesque sight. The climate remains relatively warm, allowing outdoor activities to thrive. It provides the perfect backdrop for social events and picnics.Temperature
As September arrives, Loveland's weather displays a minor decrease in high-temperatures, transitioning from August's warm 85.3°F (29.6°C) to a still moderately hot 77.9°F (25.5°C). Loveland experiences a substantial decline from the daytime high temperatures in September, settling on an average low of 51.3°F (10.7°C).Humidity
In September, the average relative humidity in Loveland is 43%.Rainfall
In Loveland, in September, during 7.4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Loveland, during the entire year, the rain falls for 98.8 days and collects up to 9.92" (252mm) 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 September, sunrise is at 6:28 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:43 pm MDT.
Sunshine
The average sunshine in September in Loveland is 10.9h.UV index
In Loveland, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Ensure safety - Sun damage prevention is strongly urged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Loveland, CO
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (38.5°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is December (19.9°F).
Average pressure in September
Loveland, CO
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Loveland, CO
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Loveland, CO
- Average humidity in September: 43%
The month with the highest relative humidity is February (65%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Loveland, CO
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Loveland, CO
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is November (3.8 days).
Average snowfall in September
Loveland, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Loveland, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Loveland, CO
- Average daylight in September: 12h and 24min
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 18min).
- Average sunshine in September: 10h and 54min
The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in September
Loveland, CO
- Average sunshine days in September: 20.3 days
The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is July (12 days).
Average UV index in September
Loveland, CO
- Average UV index in September: 4
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
Loveland, CO
- Average cloud cover in September: 16
The month with the most cloud cover is April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in September
Loveland, 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).





