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
With the arrival of September, Merriam Woods experiences a modest decline in average high-temperatures, transitioning from a tropical 88.9°F (31.6°C) in August to a moderately hot 81.7°F (27.6°C). Merriam Woods encounters a substantial decline from its daily high to a low-temperature of 59.7°F (15.4°C) during September nights.Heat index
In September, the heat index is appraised at a tropical 86°F (30°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.Know that the heat index computations account for shaded terrains and slight winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
The average relative humidity in September is 74%.Rainfall
In Merriam Woods, in September, during 11.8 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Merriam Woods, during the entire year, the rain falls for 142.8 days and collects up to 30.47" (774mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Merriam Woods, Missouri, is 12h and 24min.On the first day of September, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Merriam Woods, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the temperature in September in Merriam Woods?
What is the average humidity in September in Merriam Woods?
How many days does it rain in September in Merriam Woods?
When it does not snow in Merriam Woods?
What is the average length of the day in September in Merriam Woods?
What time are sunrise and sunset in September in Merriam Woods?
How many hours of sunshine does Merriam Woods have in September?
How high is the UV index in September in Merriam Woods?
Average temperature in September
Merriam Woods, MO
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (44.1°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Merriam Woods, 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 (29.93"Hg).
Average wind speed in September
Merriam Woods, MO
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Merriam Woods, MO
- Average humidity in September: 74%
The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall in September
Merriam Woods, MO
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in September
Merriam Woods, MO
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Merriam Woods, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Merriam Woods, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Merriam Woods, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 24min).
Average sunshine days in September
Merriam Woods, MO
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Merriam Woods, 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 and December (UV index 2).
Average cloud cover in September
Merriam Woods, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Merriam Woods, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Merriam Woods, Missouri, USA
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