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
At the start of September, Campbell's average high-temperature reaches a moderately hot 81.7°F (27.6°C), subtly different from the preceding month. In September, the nighttime temperature lowers to an average of 63°F (17.2°C).Heat index
The heat index value for September is calculated to be a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Realize that the values for the heat index are set for shaded places and light winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
The average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.81" (46mm) of precipitation.Snowfall
April through September are months without snowfall.Daylight
The average length of the day in September in Campbell is 12h and 24min.On the first day of September in Campbell, sunrise is at 6:32 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:44 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In Campbell, Missouri, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during September leads to these advisories:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in Campbell in September?
How many hours of daylight does Campbell have in September?
What time 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
Campbell, MO
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Campbell, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Campbell, MO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Campbell, MO
- Average humidity in September: 73%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Campbell, MO
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Campbell, MO
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (10.2 days).
Average snowfall in September
Campbell, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Campbell, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Campbell, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Campbell, MO
- Average sunshine days in September: 17 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in September
Campbell, MO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Campbell, MO
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Campbell, MO
- 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).
Campbell, Missouri, USA
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