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, Florence notices a mild change in the average high-temperature, sliding from August's 85.8°F (29.9°C) to a still moderately hot 79.5°F (26.4°C). Florence's nights in September experience an average temperature drop to a refreshing 59.4°F (15.2°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Florence, in September, during 11.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 141.2 rainfall days, and 29.72" (755mm) of precipitation is accumulated.Snowfall
In Florence, 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 September, sunrise is at 6:41 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:55 pm CDT.
Sunshine
In Florence, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in Florence 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 Florence have in September?
What is the UV index reading in September?
Average temperature in September
Florence, MO
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Florence, 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 (29.91"Hg).
Average wind speed in September
Florence, MO
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are January and March (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Florence, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Florence, MO
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in September
Florence, MO
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Florence, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Florence, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Florence, MO
- 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: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Florence, MO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in September
Florence, MO
- 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
Florence, MO
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in September
Florence, 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).
Florence, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location