September weather forecast
Saint Anthony, ID

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Weather in September

September, the first month of the autumn in Saint Anthony, is also an agreeable month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 47.1°F (8.4°C).

Temperature

As September begins, there is a decrease in the average high-temperature, falling from a warm 82.9°F (28.3°C) in August to an agreeable 72.5°F (22.5°C). Saint Anthony documents a striking divergence from daytime highs, with an average nighttime temperature of 47.1°F (8.4°C) in September.

Humidity

In Saint Anthony, the average relative humidity in September is 44%.

Rainfall

In Saint Anthony, Idaho, in September, during 7.1 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Saint Anthony, during the entire year, the rain falls for 97.5 days and collects up to 11.85" (301mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows in Saint Anthony. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Saint Anthony, during the entire year, snow falls for 83.8 days and aggregates up to 41.93" (1065mm) of snow.

Daylight

In Saint Anthony, the average length of the day in September is 12h and 29min.
On the first day of September in Saint Anthony, sunrise is at 6:51 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:08 pm MDT.

Sunshine

In Saint Anthony, the average sunshine in September is 10h.

UV index

In Saint Anthony, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Guard yourself - Avoiding sunburn is suggested. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What are September temperatures in Saint Anthony?

The high-temperature, in September, in Saint Anthony, records 72.5°F (22.5°C), while the low-temperature is 47.1°F (8.4°C). In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is appraised at 82.4°F (28°C).

What is the average humidity in September in Saint Anthony?

The average relative humidity in September in Saint Anthony is 44%.

How much does it rain in Saint Anthony in September?

In September, the rain falls for 7.1 days. Throughout September, 0.87" (22mm) of precipitation is accumulated.

When does it start to snow in Saint Anthony?

September is the first month it typically snows in Saint Anthony, Idaho. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September in Saint Anthony?

The average day length in September in Saint Anthony, Idaho, is 12h and 29min.

When is the sunrise / sunset in September in Saint Anthony?

On the first day of September in Saint Anthony, sunrise is at 6:51 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:08 pm MDT.

How long on average sun shines in September in Saint Anthony?

In Saint Anthony, Idaho, the average sunshine duration in September is 10h.

What is the UV index intensity in September in Saint Anthony?

The average daily maximum UV index in September in Saint Anthony, Idaho, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Saint Anthony, ID

Average temperature in September - Saint Anthony, ID
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (26.2°F).

  • Average low temperature in September: 47.1°F

The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in September
Saint Anthony, ID

Average pressure in September - Saint Anthony, ID
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Saint Anthony, ID

Average wind speed in September - Saint Anthony, ID
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is June (6.9mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

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Average humidity in September
Saint Anthony, ID

Average humidity in September - Saint Anthony, ID
  • Average humidity in September: 44%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in September
Saint Anthony, ID

Average rainfall in September - Saint Anthony, ID
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in September
Saint Anthony, ID

Average rainfall days in September - Saint Anthony, ID
  • Average rainfall days in September: 7.1 days

The month with the highest number of rainy days is April (13 days).
The month with the least rainy days is July (5 days).

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Average snowfall in September
Saint Anthony, ID

Average snowfall in September - Saint Anthony, ID
  • Average snowfall in September: 0.04"

The month with the highest snowfall is January (11.97").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Saint Anthony, ID

Average snowfall days in September - Saint Anthony, ID
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Saint Anthony, ID

Average daylight in September / Average sunshine in September - Saint Anthony, 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: 10h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in September
Saint Anthony, ID

Average sunshine days in September - Saint Anthony, ID
  • Average sunshine days in September: 20.7 days

The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is February (10.6 days).

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Average UV index in September
Saint Anthony, ID

Average UV index in September - Saint Anthony, ID
  • Average UV index in September: 4

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).

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Average cloud cover in September
Saint Anthony, ID

Average cloud cover in September - Saint Anthony, ID
  • Average cloud cover in September: 16

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in September
Saint Anthony, ID

Average visibility in September - Saint Anthony, ID
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (3mi).

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Saint Anthony, Idaho, USA

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