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
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still moderately hot 75.9°F (24.4°C) from August's 80.2°F (26.8°C). The average low-temperature, in September, is a refreshing 57.6°F (14.2°C).Humidity
In September, the average relative humidity is 77%.Rainfall
In September, the rain falls for 9.1 days. Throughout September, 0.67" (17mm) of precipitation is accumulated. In Fisher, Illinois, during the entire year, the rain falls for 115.9 days and collects up to 10.87" (276mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:21 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm CDT.
Sunshine
In Fisher, Illinois, the average sunshine in September is 8.9h.UV index
In Fisher, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Fisher have in September?
How high is the UV index in September?
Average temperature in September
Fisher, IL
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 57.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Fisher, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Fisher, IL
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Fisher, IL
- Average humidity in September: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Fisher, IL
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in September
Fisher, IL
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Fisher, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Fisher, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Fisher, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Fisher, IL
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Fisher, 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
Fisher, IL
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Fisher, 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).
Fisher, Illinois, USA
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