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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a tropical 87.4°F (30.8°C) in August to a warm 80.2°F (26.8°C). Galena's temperature tends to fall to an average low of 60.1°F (15.6°C) during the nights of September.Humidity
In Galena, Missouri, the average relative humidity in September is 74%.Rainfall
In Galena, during September, the rain falls for 13 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 151.8 rainfall days, and 35.71" (907mm) of precipitation is accumulated.Snowfall
In Galena, snow does not fall in June through October.Daylight
In Galena, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:45 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Galena, Missouri, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Galena have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Galena, MO
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Galena, 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
Galena, MO
- Average wind speed in September: 6.4mph
The windiest months (with the highest average wind speed) are February, March and April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in September
Galena, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall in September
Galena, MO
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (5.16").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Galena, MO
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Galena, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Galena, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Galena, 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 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Galena, MO
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Galena, 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, November and December (UV index 2).
Average cloud cover in September
Galena, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Galena, 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).
Galena, Missouri, USA
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