September weather forecast
Garden City, ID

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Weather in September

September distinctly marks the beginning of fall in Garden City, bringing with it a noticeable decrease in temperatures. This month is charcaterized by shorter days and a decrease in sunshine hours. Nevertheless, the temperatures remain congenially warm, offering locals and tourists idyllic weather conditions for outdoor activities. A notable increase in average wind speeds at 5.4mph (8.7km/h) helps to maintain the balance. Moreover, an increase in rainfall can be witnessed, heralding the start of the cooler autumn season.

Temperature

With the onset of September, Garden City experiences a modest temperature adjustment, with the average high-temperature receding from a hot 86.5°F (30.3°C) in August to a warm 76.1°F (24.5°C). Garden City in September observes a substantial swing from the daily highs, with average nighttime temperatures of 53.6°F (12°C).

Humidity

In Garden City, Idaho, the average relative humidity in September is 37%.

Rainfall

In September, in Garden City, the rain falls for 6.7 days. Throughout September, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Garden City, there are 116.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated.

Snowfall

In Garden City, snow does not fall in May through October.

Daylight

In September, the average length of the day in Garden City, Idaho, is 12h and 29min.
On the first day of September, sunrise is at 7:09 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:27 pm MDT.

Sunshine

In Garden City, the average sunshine in September is 9.5h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. To guard against the harmful effects of the Sun, minimize exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What are September temperatures in Garden City?

The high-temperature, in September, in Garden City, records 76.1°F (24.5°C), while the low-temperature is 53.6°F (12°C).

What is the average humidity in September in Garden City?

In September, the average relative humidity in Garden City is 37%.

How much does it rain in Garden City in September?

In Garden City, Idaho, in September, it is raining for 6.7 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow in Garden City?

In Garden City, snow does not fall in May through October.

How many hours of daylight does Garden City have in September?

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

When are sunrise and sunset in September in Garden City?

On the first day of September in Garden City, sunrise is at 7:09 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:27 pm MDT.

How many hours of sunshine does Garden City have in September?

The average sunshine duration in September in Garden City is 9.5h.

What is the UV index intensity in September in Garden City?

The average daily maximum UV index in September in Garden City, Idaho, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Garden City, ID

Average temperature in September - Garden City, ID
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in September: 53.6°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 (23.2°F).

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Average pressure in September
Garden City, ID

Average pressure in September - Garden City, ID
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Garden City, ID

Average wind speed in September - Garden City, ID
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

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Average humidity in September
Garden City, ID

Average humidity in September - Garden City, ID
  • Average humidity in September: 37%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (30%).

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Average rainfall in September
Garden City, ID

Average rainfall in September - Garden City, ID
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in September
Garden City, ID

Average rainfall days in September - Garden City, ID
  • Average rainfall days in September: 6.7 days

The month with the highest number of rainy days is March (16.2 days).
The month with the least rainy days is July (4.5 days).

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Average snowfall in September
Garden City, ID

Average snowfall in September - Garden City, ID
  • Average snowfall in September: 0"

The month with the highest snowfall is December (6.65").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Garden City, ID

Average snowfall days in September - Garden City, ID
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Garden City, ID

Average daylight in September / Average sunshine in September - Garden City, 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 30min).

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Average sunshine days in September
Garden City, ID

Average sunshine days in September - Garden City, ID
  • Average sunshine days in September: 21.5 days

The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in September
Garden City, ID

Average UV index in September - Garden City, ID
  • Average UV index in September: 4

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).

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Average cloud cover in September
Garden City, ID

Average cloud cover in September - Garden City, ID
  • Average cloud cover in September: 14

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in September
Garden City, ID

Average visibility in September - Garden City, ID
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Garden City, Idaho, USA

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