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
Transitioning from August to September, Harviell observes an average high-temperature of a moderately hot 81.7°F (27.6°C), differing subtly from the previous month. Harviell's average low-temperature during September nights is observed to be a comfortable 62.2°F (16.8°C).Heat index
September's average heat index is computed to be a hot 86°F (30°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
In Harviell, the average relative humidity in September is 72%.Rainfall
In Harviell, in September, it is raining for 9.3 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 124.5 rainfall days, and 16.38" (416mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Harviell.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:46 pm CDT.
Sunshine
In September, the average sunshine in Harviell is 9.9h.UV index
In Harviell, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during September translates into the following guidance:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in Harviell in September?
What is the average humidity in September in Harviell?
How much does it rain in Harviell in September?
When it does not snow in Harviell?
What is the average length of the day in September in Harviell?
When are sunrise and sunset in September in Harviell?
How long on average sun shines in September in Harviell?
What is the UV index reading in September in Harviell?
Average temperature in September
Harviell, 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 (42.8°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in September
Harviell, 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
Harviell, MO
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Harviell, MO
- Average humidity in September: 72%
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
Harviell, MO
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in September
Harviell, MO
- Average rainfall days in September: 9.3 days
The months with the highest number of rainy days are May and July (14.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Harviell, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Harviell, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Harviell, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Harviell, MO
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in September
Harviell, 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
Harviell, MO
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in September
Harviell, 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).
Harviell, Missouri, USA
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