September weather forecastGarden City, ID
September
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
September's arrival comes with a decrease in the average high-temperature, moving from a tropical 86.5°F (30.3°C) in August to a moderately hot 76.1°F (24.5°C). Garden City logs a notable disparity from the daily highs during September, as the nighttime temperature lowers to an average of 53.6°F (12°C).Humidity
In September, the average relative humidity is 37%.Rainfall
In Garden City, Idaho, in September, it is raining for 6.7 days, with typically 0.39" (10mm) of accumulated precipitation. In Garden City, during the entire year, the rain falls for 116.8 days and collects up to 15.08" (383mm) of precipitation.Snowfall
In Garden City, snow does not fall in May through October.Daylight
In September, the average length of the day 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 September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Garden City, ID
- Average daylight in September: 12h and 30min
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 30min
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).
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).
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).
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).
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).
