September weather forecastLamar Heights, MO
September
Weather in September
The first month of the autumn, September, is still a warm month in Lamar Heights, Missouri, with an average temperature ranging between max 79.9°F (26.6°C) and min 61°F (16.1°C).Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a tropical 86.4°F (30.2°C) in August to a warm 79.9°F (26.6°C). September is noted for a mean low-temperature of 61°F (16.1°C).Humidity
The average relative humidity in September in Lamar Heights is 76%.Rainfall
In Lamar Heights, in September, during 12.6 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Lamar Heights, during the entire year, the rain falls for 142.8 days and collects up to 32.76" (832mm) of precipitation.Snowfall
In Lamar Heights, snow does not fall in June through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In Lamar Heights, Missouri, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lamar Heights, MO
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Lamar Heights, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Lamar Heights, MO
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Lamar Heights, MO
- Average humidity in September: 76%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Lamar Heights, MO
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (5.79").
The driest months (with the least rainfall) are January and December (1.5").
Average rainfall days in September
Lamar Heights, MO
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Lamar Heights, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Lamar Heights, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lamar Heights, MO
- Average daylight in September: 12h and 24min
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 36min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Lamar Heights, MO
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in September
Lamar Heights, MO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lamar Heights, MO
- Average cloud cover in September: 30
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in September
Lamar Heights, 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).
