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 correlates with a reduction in the average high-temperature, down from a moderately hot 76.5°F (24.7°C) in August to a comfortable 66.6°F (19.2°C). Herman's September nights see a large temperature deviation, with temperatures resting at a low of 40.1°F (4.5°C).Humidity
The average relative humidity in September is 53%.Rainfall
In Herman, in September, during 11.1 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, in Herman, there are 127 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.47" (12mm) of snow. In Herman, during the entire year, snow falls for 126.6 days and aggregates up to 110.28" (2801mm) of snow.Daylight
In September, the average length of the day in Herman is 12h and 29min.On the first day of the month, sunrise is at 6:50 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:08 pm MDT.
Sunshine
In September, the average sunshine is 10.1h.UV index
In Herman, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Herman in September?
What is the average humidity in September in Herman?
How much does it rain in Herman in September?
When does it start to snow in Herman?
How many hours of daylight does Herman have in September?
When is the sunrise / sunset in September in Herman?
How long on average sun shines in September in Herman?
How high is the UV index in September in Herman?
Average temperature in September
Herman, ID
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in September: 40.1°F
The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Herman, ID
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Herman, ID
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
Herman, ID
- Average humidity in September: 53%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Herman, ID
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in September
Herman, ID
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Herman, ID
- Average snowfall in September: 0.47"
The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Herman, ID
- Average snowfall days in September: 0.5 days
The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Herman, 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: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Herman, ID
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in September
Herman, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Herman, ID
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in September
Herman, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).
Herman, Idaho, USA
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