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 onset of September, Gerrit's average high-temperature adjusts, receding from August's moderately hot 79.5°F (26.4°C) to a pleasant 69.4°F (20.8°C). Despite a significant deviation from daily highs, September sees an average nighttime temperature of 44.1°F (6.7°C).Humidity
In September, the average relative humidity in Gerrit is 48%.Rainfall
In Gerrit, during September, the rain falls for 9.1 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Gerrit, during the entire year, the rain falls for 121 days and collects up to 20.12" (511mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Gerrit. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.67" (17mm) of snow. Throughout the year, in Gerrit, there are 119.7 snowfall days, and 88.23" (2241mm) of snow is accumulated.Daylight
The average length of the day in September in Gerrit is 12h and 30min.On the first day of the month, sunrise is at 6:49 am and sunset at 8:00 pm. On the last day of September, in Gerrit, Idaho, sunrise is at 7:22 am and sunset at 7:06 pm MDT.
Sunshine
In Gerrit, Idaho, the average sunshine in September is 10h.UV index
In September, the average daily maximum UV index in Gerrit is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What are the temperatures in Gerrit in September?
What is the average humidity in September in Gerrit?
How many days does it rain in September in Gerrit?
When does it start snowing in Gerrit?
How many hours of daylight does Gerrit have in September?
When are sunrise and sunset in September in Gerrit?
How many hours of sunshine does Gerrit have in September?
How high is the UV index in September in Gerrit?
Average temperature in September
Gerrit, ID
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in September: 44.1°F
The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Gerrit, ID
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Gerrit, ID
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (6.6mph).
The calmest month (with the lowest average wind speed) is January (4.4mph).
Average humidity in September
Gerrit, ID
- Average humidity in September: 48%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Gerrit, ID
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is January (2.44").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
Gerrit, ID
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Gerrit, ID
- Average snowfall in September: 0.67"
The month with the highest snowfall is January (20").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Gerrit, ID
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Gerrit, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Gerrit, ID
- Average sunshine days in September: 18 days
The month with the most sunshine days is July (19.9 days).
The month with the least sunshine days is April (6.7 days).
Average UV index in September
Gerrit, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Gerrit, ID
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Gerrit, ID
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Gerrit, Idaho, USA
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