September weather forecastHoward, CO
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Howard, Colorado, with an average temperature varying between 41.2°F (5.1°C) and 68.5°F (20.3°C).Temperature
With the onset of September, Howard's climate undergoes a slight change as the average high-temperature moves from a warm 74.8°F (23.8°C) in August to a pleasant 68.5°F (20.3°C). Significant dips from daytime highs mark the September nights, with a consistent average temperature of 41.2°F (5.1°C).Humidity
The average relative humidity in September is 51%.Rainfall
In Howard, during September, the rain falls for 6 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 58.1 rainfall days, and 5.83" (148mm) of precipitation is accumulated.Snowfall
In Howard, snow does not fall in July through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:33 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:47 pm MDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In Howard, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 in September translates into these instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Howard, CO
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 41.2°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Howard, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).
Average wind speed in September
Howard, CO
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Howard, CO
- Average humidity in September: 51%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Howard, CO
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days in September
Howard, CO
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (1.2 days).
Average snowfall in September
Howard, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Howard, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (7.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Howard, CO
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Howard, CO
- Average sunshine days in September: 22.1 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in September
Howard, CO
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Howard, CO
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 32).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Howard, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
