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
Garrett's September showcases an average high-temperature of a still moderately hot 77.2°F (25.1°C), hardly distinct from August's 81.1°F (27.3°C). Throughout the month of September, Garrett witnesses an average temperature of 58.5°F (14.7°C).Humidity
The average relative humidity in September in Garrett is 76%.Rainfall
February and September are months with the least rain in Garrett when the rain falls for 11.9 days and typically aggregates up to 1.26" (32mm) of rain.Snowfall
In Garrett, snow does not fall in May through October.Daylight
In September, the average length of the day in Garrett is 12h and 26min.On the first day of September in Garrett, sunrise is at 6:22 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:37 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What are September temperatures in Garrett?
What is the average humidity in September in Garrett?
What is the driest month in Garrett?
How many days does it rain in September in Garrett?
When it does not snow in Garrett?
What is the average length of the day in September in Garrett?
What time are sunrise and sunset in September in Garrett?
How many hours of sunshine does Garrett have in September?
What is the UV index intensity in September in Garrett?
Average temperature in September
Garrett, IL
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Garrett, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Garrett, IL
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Garrett, IL
- Average humidity in September: 76%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Garrett, IL
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is April (2.72").
The driest months (with the least rainfall) are February and September (1.26").
Average rainfall days in September
Garrett, IL
- Average rainfall days in September: 11.9 days
The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Garrett, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Garrett, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 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
Garrett, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Garrett, IL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Garrett, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Garrett, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Garrett, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Garrett, Illinois, USA
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