September weather forecast
Chapin, ID

Weather in September

September, the first month of the autumn in Chapin, is also an enjoyable month, with an average temperature varying between 40.1°F (4.5°C) and 64.9°F (18.3°C).

Temperature

In Chapin, Idaho, the average high-temperature in September decreases from a warm 74.1°F (23.4°C) in August to an enjoyable 64.9°F (18.3°C). In September, in Chapin, Idaho, the average low-temperature is 40.1°F (4.5°C).

Humidity

In Chapin, the average relative humidity in September is 54%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. In Chapin, during the entire year, the rain falls for 96.6 days and collects up to 32.95" (837mm) of precipitation.

Snowfall

Months with snowfall in Chapin are January through June, August through December. In September, it is snowing for 2.5 days. Throughout September, 4.49" (114mm) of snow is accumulated. Throughout the year, in Chapin, there are 160.8 snowfall days, and 200.16" (5084mm) of snow is accumulated.

Daylight

In Chapin, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:48 am and sunset at 8:00 pm. On the last day of September, in Chapin, sunrise is at 7:21 am and sunset at 7:07 pm MDT.

Sunshine

The average sunshine in September in Chapin is 9.9h.

UV index

In September, the average daily maximum UV index in Chapin is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Chapin?

The average relative humidity in September is 54%.

How much does it rain in Chapin in September?

In Chapin, during September, the rain falls for 9.5 days and regularly aggregates up to 1.65" (42mm) of precipitation.

How much does it snow in Chapin in September?

In Chapin, Idaho, during September, snow falls for 2.5 days and regularly aggregates up to 4.49" (114mm) of snow.

What is the average length of the day in September in Chapin?

In September, the average day length in Chapin, Idaho, is 12h and 29min.

What time are sunrise and sunset in September in Chapin?

In September, on the first day of the month, sunrise is at 6:48 am and sunset at 8:00 pm. On the last day of the month, in Chapin, sunrise is at 7:21 am and sunset at 7:07 pm MDT.

How many hours of sunshine does Chapin have in September?

In September, the average sunshine duration in Chapin is 9.9h.

What is the UV index reading in September in Chapin?

In September, the average daily maximum UV index in Chapin is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Chapin, ID

Average temperature in September - Chapin, ID
  • Average high temperature in September: 64.9°F

The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (23.2°F).

  • Average low temperature in September: 40.1°F

The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).

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Average pressure in September
Chapin, ID

Average pressure in September - Chapin, 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).

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Average wind speed in September
Chapin, ID

Average wind speed in September - Chapin, ID
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).

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Average humidity in September
Chapin, ID

Average humidity in September - Chapin, ID
  • Average humidity in September: 54%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in September
Chapin, ID

Average rainfall in September - Chapin, ID
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is July (0.91").

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Average rainfall days in September
Chapin, ID

Average rainfall days in September - Chapin, ID
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (3 days).

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Average snowfall in September
Chapin, ID

Average snowfall in September - Chapin, ID
  • Average snowfall in September: 4.49"

The month with the highest snowfall is February (34.33").
The month with the least snowfall is July (0").

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Average snowfall days in September
Chapin, ID

Average snowfall days in September - Chapin, ID
  • Average snowfall days in September: 2.5 days

The month with the highest number of snowfall days is March (23.6 days).
The month with the least snowfall days is July (0.1 days).

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Average daylight in September /
Average sunshine in September
Chapin, ID

Average daylight in September / Average sunshine in September - Chapin, ID
  • Average daylight in September: 12h and 29min

The month with the longest days is June (Average daylight: 15h and 23min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 9h and 54min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

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Average sunshine days in September
Chapin, ID

Average sunshine days in September - Chapin, ID
  • Average sunshine days in September: 16.7 days

The month with the most sunshine days is July (20.3 days).
The month with the least sunshine days is April (6.2 days).

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Average UV index in September
Chapin, ID

Average UV index in September - Chapin, 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, October, November and December (UV index 1).

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Average cloud cover in September
Chapin, ID

Average cloud cover in September - Chapin, ID
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 14).

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Average visibility in September
Chapin, ID

Average visibility in September - Chapin, 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, March and December (3mi).

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