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 September's onset, the average high-temperature recedes from August's tropical 89.8°F (32.1°C) to a warm 78.3°F (25.7°C). Glenns Ferry, in September, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 56.5°F (13.6°C).Humidity
In September, the average relative humidity is 32%.Rainfall
In September, in Glenns Ferry, the rain falls for 5 days. Throughout September, 0.28" (7mm) of precipitation is accumulated. In Glenns Ferry, during the entire year, the rain falls for 80.6 days and collects up to 7.36" (187mm) of precipitation.Snowfall
In Glenns Ferry, snow does not fall in May through September.Daylight
In Glenns Ferry, the average length of the day in September is 12h and 29min.On the first day of September in Glenns Ferry, sunrise is at 7:06 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:23 pm MDT.
Sunshine
The average sunshine in September in Glenns Ferry is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Glenns Ferry?
What is the average humidity in September in Glenns Ferry?
How much does it rain in Glenns Ferry in September?
When it does not snow in Glenns Ferry?
Does it snow in Glenns Ferry in September?
How many hours of daylight does Glenns Ferry have in September?
When is the sunrise / sunset in September in Glenns Ferry?
How many hours of sunshine does Glenns Ferry have in September?
What is the UV index intensity in September in Glenns Ferry?
Average temperature in September
Glenns Ferry, ID
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).
Average pressure in September
Glenns Ferry, ID
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Glenns Ferry, ID
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Glenns Ferry, ID
- Average humidity in September: 32%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is July (26%).
Average rainfall in September
Glenns Ferry, ID
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Glenns Ferry, ID
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (3.1 days).
Average snowfall in September
Glenns Ferry, ID
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Glenns Ferry, ID
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (5.2 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
Glenns Ferry, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Glenns Ferry, ID
- Average sunshine days in September: 24 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (16.5 days).
Average UV index in September
Glenns Ferry, ID
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Glenns Ferry, ID
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Glenns Ferry, ID
- 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).
Glenns Ferry, Idaho, USA
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