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
During Greenleaf's transition into September, the average high-temperature lessens, moving from a tropical 89.1°F (31.7°C) in August to a moderately hot 78.1°F (25.6°C). Nighttime temperatures throughout September in Greenleaf register a significant deviation from the day's highs, averaging at a refreshing 55.4°F (13°C).Humidity
In Greenleaf, the average relative humidity in September is 35%.Rainfall
In September, the rain falls for 5.5 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. Throughout the year, in Greenleaf, there are 105.6 rainfall days, and 9.65" (245mm) of precipitation is accumulated.Snowfall
In Greenleaf, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:29 pm MDT.
Sunshine
The average sunshine in September is 9.6h.UV index
In Greenleaf, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greenleaf in September?
What is the average humidity in September?
How much does it rain in Greenleaf in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September in Greenleaf?
How many hours of sunshine does Greenleaf have in September?
What is the UV index intensity in September?
Average temperature in September
Greenleaf, ID
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is December (35.8°F).
- Average low temperature in September: 55.4°F
The months with the highest average low temperature are July and August (62.8°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).
Average pressure in September
Greenleaf, ID
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in September
Greenleaf, ID
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in September
Greenleaf, ID
- Average humidity in September: 35%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in September
Greenleaf, ID
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Greenleaf, ID
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Greenleaf, ID
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Greenleaf, ID
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (7.5 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
Greenleaf, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- 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: 5h and 30min).
Average sunshine days in September
Greenleaf, ID
- Average sunshine days in September: 23.6 days
The month with the most sunshine days is July (25.1 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in September
Greenleaf, 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
Greenleaf, ID
- Average cloud cover in September: 14
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Greenleaf, 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).
Greenleaf, Idaho, USA
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