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 average high-temperature in Colby marginally decreases from a tropical 88.7°F (31.5°C) in August to a moderately hot 81.1°F (27.3°C). September brings with it a nighttime average temperature of 59.9°F (15.5°C).Heat index
September's heat index is estimated at 82.4°F (28°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in September in Colby is 53%.Rainfall
In Colby, in September, during 8.4 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Colby, during the entire year, the rain falls for 93.4 days and collects up to 13.39" (340mm) of precipitation.Snowfall
In Colby, snow does not fall in June through September.Daylight
In September, the average length of the day in Colby is 12h and 26min.On the first day of September in Colby, sunrise is at 7:13 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:27 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Colby is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What are the temperatures in Colby in September?
What is the average humidity in September in Colby?
How much does it rain in Colby in September?
When it does not snow in Colby?
Does it snow in Colby in September?
How many hours of daylight does Colby have in September?
When are sunrise and sunset in September in Colby?
How many hours of sunshine does Colby have in September?
What is the UV index reading in September in Colby?
Average temperature in September
Colby, KS
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (41.4°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is December (25°F).
Average pressure in September
Colby, KS
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in September
Colby, KS
- Average wind speed in September: 11.2mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in September
Colby, KS
- Average humidity in September: 53%
The months with the highest relative humidity are January and December (64%).
The month with the lowest relative humidity is July (51%).
Average rainfall in September
Colby, KS
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Colby, KS
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is December (2.4 days).
Average snowfall in September
Colby, KS
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Colby, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Colby, KS
- Average daylight in September: 12h and 2min
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: 9h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Colby, KS
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is December (25 days).
The month with the least sunshine days is July (14.5 days).
Average UV index in September
Colby, KS
- Average UV index in September: 5
The months with the highest UV index are June and 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
Colby, KS
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in September
Colby, KS
- 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).
Colby, Kansas, USA
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