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
September ushers in a minute temperature change, with average high-temperatures reducing from August's moderately hot 84.7°F (29.3°C) to a still warm 79°F (26.1°C). Smithfield anticipates an average minimum temperature of 59.5°F (15.3°C) in the month of September.Humidity
The months with the lowest humidity are August through October, with an average relative humidity of 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 11 days and typically collects 1.3" (33mm) of precipitation.Snowfall
In Smithfield, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:10 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:24 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What are the least humid months?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Smithfield have in September?
How high is the UV index in September?
Average temperature in September
Smithfield, KY
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in September
Smithfield, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Smithfield, KY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Smithfield, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (75%).
Average rainfall in September
Smithfield, KY
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in September
Smithfield, KY
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Smithfield, KY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Smithfield, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.2 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
Smithfield, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Smithfield, KY
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Smithfield, KY
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Smithfield, KY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Smithfield, KY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Smithfield, Kentucky, USA
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