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 beginning of September, the average high-temperature shows a decrease, transitioning from a hot 90.5°F (32.5°C) in August to a moderately hot 79.7°F (26.5°C). New Plymouth undergoes a major shift from daytime highs, averaging a fresh 54.3°F (12.4°C) during the night in September.Humidity
In New Plymouth, Idaho, the average relative humidity in September is 37%.Rainfall
In September, in New Plymouth, the rain falls for 4.4 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. In New Plymouth, Idaho, during the entire year, the rain falls for 95.4 days and collects up to 10.2" (259mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in New Plymouth is 12h and 29min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:22 pm. On the last day of September, in New Plymouth, sunrise is at 7:44 am and sunset at 7:29 pm MDT.
Sunshine
The average sunshine in September in New Plymouth is 9.5h.UV index
In New Plymouth, Idaho, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the temperature in September in New Plymouth?
What is the average humidity in September in New Plymouth?
How many days does it rain in September in New Plymouth?
When it does not snow in New Plymouth?
What is the average length of the day in September in New Plymouth?
When is the sunrise / sunset in September in New Plymouth?
How long on average sun shines in September in New Plymouth?
How high is the UV index in September in New Plymouth?
Average temperature in September
New Plymouth, ID
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (35.8°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.4°F).
Average pressure in September
New Plymouth, 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 (29.92"Hg).
Average wind speed in September
New Plymouth, ID
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).
Average humidity in September
New Plymouth, ID
- Average humidity in September: 37%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (30%).
Average rainfall in September
New Plymouth, ID
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is March (1.61").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
New Plymouth, ID
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in September
New Plymouth, ID
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
New Plymouth, 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 and September (0 days).
Average daylight in September /
Average sunshine in September
New Plymouth, 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 3min
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 18min).
Average sunshine days in September
New Plymouth, ID
- Average sunshine days in September: 24.7 days
The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in September
New Plymouth, 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
New Plymouth, ID
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in September
New Plymouth, ID
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
New Plymouth, Idaho, USA
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