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
The arrival of September brings an average high-temperature of a warm 81.1°F (27.3°C), closely following the temperature pattern of August. In September, the average low-temperature in Lambert, Missouri, records at a comfortable 61.3°F (16.3°C) during the nights.Heat index
September's mean heat index is estimated at a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
The average relative humidity in September in Lambert is 73%.Rainfall
The month with the least rainfall in Lambert is September, when the rain falls for 11.4 days and typically collects 1.5" (38mm) of precipitation.Snowfall
In Lambert, snow does not fall in May through September.Daylight
In September, the average length of the day in Lambert, Missouri, is 12h and 25min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:26 pm. On the last day of September, in Lambert, sunrise is at 6:53 am and sunset at 6:42 pm CDT.
Sunshine
In Lambert, the average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Lambert in September?
What is the average humidity in September in Lambert?
What is the driest month in Lambert?
How much does it rain in Lambert in September?
When it does not snow in Lambert?
Does it snow in Lambert in September?
What is the average length of the day in September in Lambert?
What time are sunrise and sunset in September in Lambert?
How many hours of sunshine does Lambert have in September?
How high is the UV index in September in Lambert?
Average temperature in September
Lambert, MO
- Average high temperature in September: 81.1°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 (41°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Lambert, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Lambert, MO
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Lambert, MO
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Lambert, MO
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Lambert, MO
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in September
Lambert, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lambert, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lambert, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 4min
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 48min).
Average sunshine days in September
Lambert, MO
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Lambert, MO
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Lambert, MO
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).
Average visibility in September
Lambert, 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).
Lambert, Missouri, USA
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